Riverside Clinicians

Darlena Allen 

Clinical Director 


To be human is to feel stress, to feel overwhelmed, and at times, to even feel alone. I welcome the opportunity to hear your experience, through providing my undivided attention, and support. Your thoughts, feelings, and needs are not only worthy of being heard, they deserve respect and regard. It is my goal to create an environment in which you feel safe, and empowered to share your unique story. Together we will not only set your goals, but identify, and work towards your preferred reality.


My experience includes working with children with behavioral issues at home/school, working with families on co-parenting issues, working with children of separation/divorce, working with foster children/families, working with blended families, and working with Depression and Trauma.  Also, assisting therapists navigate the unique challenges of the profession.  The strength based theoretical approaches which inform my work includes: Attachment-Based Therapy, Solution-Focused Therapy, Narrative Therapy and Reflective Supervision. It is my belief that, not only are we individually, equipped to solve the human condition, but that, in addition, we are the authors of our own story. If you will allow me to utilize my journey to witness your story as you write and re-write your Narrative, you will learn the following: 
“You are braver than you believe, stronger than you seem, and smarter than you think” - A.A. Milne, creator of Winnie-The-Pooh


Robyn Norris 

Clinical Supervisor


My passion lies in helping individuals from a relational perspective and instilling hope
and assurance of ones individual journey in order to help live a life that is of fulfillment. I
believe we all have a story and the right to be heard and seen and that is what I look to offer you within our therapeutic relationship. I believe the therapist-client relationship is integral to healing and as such, it should feel collaborative and free from judgement. 


I have extensive experience working with children and adolescents, alongside their
families. I am a firm believer that in order to help the child, we must also examine the family. I have provided such therapeutic services to children and families in community mental health clinics, school-based settings and residential treatment facilities. As such, I have extended training in trauma focused cognitive behavioral therapy as well as knowledge and training within the 0-5 population. I have experience treating a wide array of issues such as depression, anxiety, ADHD, attachment concerns, trauma, abuse, grief and loss, change of life issues, divorce, adoption, and relational disorders.

In my professional capacity I have also had experience providing clinical supervision and oversight to pre-licensed and licensed therapist. I take joy in working alongside clinicians as they develop and hone their professional skills and knowledge. I believe that as a clinician or “healer” it is important to be reflective in one’s process in order to provide the emotional space needed for those that we serve.

I work from an eclectic lens, often incorporating cognitive behavioral therapies, client-centered approaches, solution-focused, family systems work and narrative therapy. I am comfortable working with individuals of all sexual orientations and genders. As a clinician, I strive for cultural humility and understanding of ones own individual cultural experience. Most importantly, I look forward to working alongside you to assist in your journey of healing.

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Crystal Folk

Clinical Supervisor

LMFT 117308

I am comfortable supporting clients with a wide range of concerns including depression, anxiety, ADHD, relationship issues, parenting problems, career challenges, self-esteem, and issues of grief and loss. I have helped people navigate the complex aftermath that results from physical trauma or emotional abuse.

My counseling style is warm and interactive. I believe in treating everyone with respect, being sensitive, and meeting each client in the space that they are in. My counseling approach pulls from several theories, but I primarily use Cognitive Behavioral Therapy, Solution Focused, and Client Centered Therapies. 

Here's what you can expect in a session with me: I will tailor our dialog and develop a treatment plan to meet your unique and specific needs and goals. I like to provide feedback, share suggestions, and encourage home practice from our previous sessions, so you can see the interventions used in action.  


Dr. Natasha Kordus

Clinical Supervisor


I work with children, adolescents, and adults. My approach to therapy is a bit eclectic in that I have specialized training in Cognitive Behavioral Therapy, but I also include early childhood considerations, feminist thought, and multi-cultural perspectives in my interventions. I believe in working closely with my clients as a team on identifying goals and moving forward towards desired changes. I specialize in trauma, depression, anxiety, chronic illness, grief and loss, adjustment difficulties, as well as diagnostic clarification of ADHD, Autism, or psychotic and mood disorders. As a multicultural, Hispanic woman, I love working with clients from diverse backgrounds and, in particular, specialize in working with members of the Deaf / Hard of Hearing and LGBTQ communities. I am fluent in ASL.

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Carol Davidson

Marriage and Family Therapist


My clinical experience includes working with adults, adolescents, children and couples, which issues such as codependency, anxiety, depression, grief, adult children of alcoholics and divorce recovery.  I have led workshops in codependency and boundaries, and have co-facilitated groups in “Healing the Mother Wound.”  I am EMDR trained (Eye Movement Desensitization and Processing, and also use Cognitive Behavioral Therapy (CBT) as well as Solution Focused, Family Systems theoretical approaches and Mindfulness techniques. 

In working with clients, I see the client and I as a team, working together to determine goals and treatment that meet the individual client’s needs, while providing a safe, empathetic environment to process and facilitate healing of childhood and family of origin experiences, as well as present issues and concerns. 

I love helping people gain insight, awareness and empowerment in their lives, to achieve wholeness and improved relationships

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Elizabeth Dupray

Marriage and Family Therapist


I am a licensed Marriage and Family therapist who began my educational journey later in life. My life's experiences led me to seek a career more meaningful in helping others. 

Prior to my education in counseling I worked for many years in the grocery business as a retail clerk, getting to know all the customers who came through my lane. I believe that job was a great training ground for my current career as everyone from all walks of life goes to the grocery store. My keen observation of each person and family dynamics was educational in itself. 

My years of internship and counseling have been meaningful when clients have made progress and I get to be a part of their journey. The populations I have the most experience in are clients struggling with anxiety, depression, domestic violence, strained marriages, and relationships. I have helped women stuck in the cycle of abuse and codependency and understanding the pain from my own life's experiences. I have worked with families and individuals struggling with family members addicted to different substances.

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I have done therapy for over ten years. I specialize in clients who are racial/ethnic minorities, queer, transgender, and/or polyamorous. I can provide letters for transgender individuals who pursue medical transition. I have worked with a variety of presenting issues such as depression, anxiety, ADHD, and trauma.

I am a relational-cultural therapist, which means that I view relationships as central to our growth, honor my client's cultural identities, and explore how "isms" (e.g., racism, sexism, etc.) impact my clients. I view therapy as a collaboration in which we work together to address your concerns as well as help you live a life of meaning.

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Dr. Tanika Gayle 

Clinical Psychologist


The core of my work is to help people operate from the best in themselves as an individual and in relationship with others. My work helps individuals develop a state of balance by increasing one true, solid sense of self and the ability to take care of self while working through difficulties that life throws at you. Key tools in accomplishing this are by helping individuals self confront and self validate and stay true to ones' integrity. I work with individuals dealing with everyday life stressors, individuals discovering their sense of identity, and various discomforts such as depression, anxiety, relationship issues, and family issues. I have a special interest in treating individuals, families, couples, and intimacy issues which includes sex therapy.

In addition to providing therapy, being the owner/clinical director of Collaborative Psychology Group, I currently am the program manager and primary supervisor for Family Support Services at the Inland Empire Ronald McDonald House. It is a practicum training site for marriage and family therapist, social work and psychology doctorate students. In addition I also have a practicum training program at Collaborative Psychology Group for Loma Linda University master and doctoral students. 

Andrea Lovvorn

Andrea Lovvorn

Social Worker 


I hold a Pupil Personnel Services Credential (PPSC) in School Social Work, enabling me to understand school systems and potential factors affecting the mental health of children and teenagers in the school setting.  I have advanced training in the area of trauma and depression and am EMDR trained.

I enjoy work with diverse populations and have helped clients ranging from 2 years old to 90 years old.  I have a range of experience which includes working with early childhood trauma, recent trauma, depression, anxiety, grief and loss, childbirth trauma, military-related stressors, caregiver stress, teenagers, end-of-life issues, adjustment to chronic disease, self-harm, and behavioral challenges.  Each person is unique and I strive to utilize evidence-based treatment methods to improve your symptoms as rapidly as possible through individual therapy, family therapy, and/or connection to outside resources as needed.

Dr. Manijeh Badieee

Clinical Psychologist


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Tawny Weir

Marriage and Family Therapist


I am trained in various evidence-based practices, including Individual and Trauma-Focused Cognitive Behavioral Therapy, Trauma-Informed Care, Seeking Safety.  I have also served diverse populations, providing individual and group therapy to sexual assault and trauma survivors, systems-involved youth and their families transitioning adults, and older adults, and other marginalized groups facing an array of challenges including depression, anxiety, adjustment disorder, and post-traumatic stress disorder.

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Gail York

Social Worker


In my practice, I see individuals from all walks of life, with a variety of problems. Their issues range from stress or depression related to everyday life, to living and dealing with severe mental illness such as Schizophrenia or Bipolar Disorder. I also work with individuals and/or families who have been court-ordered for treatment.

I have extensive training and experience working with PTSD, and Mood Disorders such as Major Depressive Disorder and Bipolar Disorder. I have also worked extensively with individuals who have Schizophrenia and Schizoaffective Disorder. In addition, I work with individuals who have problems with drug and alcohol issues in conjunction with a major mental illness. Further, I work with individuals who have been sexually abused and when appropriate, their families as well.


My experience has included working with children, adolescents, young adults, and families in public schools and community mental health facilities. In addition, I have experience working with suicidal adolescents in an intensive outpatient program and providing support to families of children with medical illnesses. My training has allowed me to gain experience working with a variety of conditions including depression, anxiety, trauma, self-harm, impulse and control issues, behavior and conduct problems, relational concerns, and adjustment difficulties. 

Dr. Samantha Martinez

Clinical Psychologist


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Dr. Nikiesha Brooks


I am currently a Psych assistant under the supervision of Dr. Tanika Gayle, PSY 23903 (Licensed Clinical Psychologist) and graduate student at the Chicago School of Professional Psychology in the Forensic Psychology Psy.D. Program. I received my Master’s degree in Marriage and Family Therapy from the University of Phoenix, Gardena and have worked in community mental health for the past 7 years.


My experience includes conducting individual therapy, conducting psychological assessments, facilitating group therapy, as well as crisis intervention.  I began working with children ages 5-18 years and their families at the Los Angeles Child Guidance Clinic in intensive services.I have worked with the Los Angeles County Sheriff’s Department in their Vital Intervention Directional Alternative’s Academy with at-risk youths and families, and, also with incarcerated inmates at the Century Regional Detention Facility, Twin Towers Correctional Facility, and Men’s Central Jail. I have also worked with both incarcerated and newly released individual’s in the HealthRight 360 reintegration program in Los Angeles. Most recently, I have worked with individual’s struggling with substance abuse and comorbid disorders at BLVD Treatment Centers San Diego


 I am a doctoral candidate at The Chicago School of Professional Psychology. I received my Master’s degree in Counseling Psychology from National University. My experience includes working in community mental health, working with individuals and couples. I have worked with a diverse population of clients of all ages. I utilize an integrative approach combining cognitive-behavioral, psychodynamic, mindfulness, and humanistic modalities. I believe the therapeutic process guides clients to increased self-awareness and decreased symptoms. Additionally, I am EMDR trained (Eye Movement Desensitization and Reprocessing) and a Certified Rape Crisis Counselor.  


My intention is to help patients heal their relationships and understand trauma's psychological and physical impact. The core of my work is to help patients gain self-insight and awareness, operate from the best in themselves, and improve their relationships with others. I believe the therapeutic relationship is essential to the treatment. I strive to honor my patient’s identities and assist them in exploring intersectionality.


I am currently a psychology intern under the supervision of Dr. Natasha Kordus, PSY18501 (Licensed Clinical Psychologist) and a graduate student at Fielding Graduate University in the Clinical Psychology PhD Program. I currently hold a Master of Arts in Clinical Psychology and a Master of Art in Teaching.


My approach to therapy is integrated and philosophically grounded in the belief that we are each day trying to be our authentic selves. And as we strive to thrive, struggle and suffering are a natural part of the human condition. Each  person’s goals for therapy are unique, and I work closely with clients to build insight into the goals that will provide relief. I have previously worked with adolescents and adults, and am developing expertise in working with clients who struggle with addiction, depression, anxiety, and other psychotic and personality disorders. I am additionally growing expertise in the completion of psychological assessments to clarify diagnosis of ADHD, Autism, and other mood disorders. Having lived abroad and being conversational in Arabic , I enjoy working with clients from diverse backgrounds.

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Hello and thank you for taking a moment to learn a little about me. My name is Dr. Ivy Kensinger and I am a Psychological Assistant under the supervision of Dr. M. Natasha Kordus (PSY18501). I earned my doctorate in clinical psychology from Alliant International University and received clinical training in both therapy and psychological testing, working primarily with adults and adolescents age 15+. I hold certification in LGBTQ+ Mental Health and Human Services through the Rockway Institute and have focused experience in chronic pain and other chronic illness, grief and loss, trauma, and alternative relationship styles. My theoretical orientation and approach to therapy is Existential-Integrationist, which means that I look at you as a unique individual with personal life experiences, how these relate to universal human experiences, and tailor my therapeutic approach to fit you, your strengths, and your needs. Therapy is a process where we work together to bring about meaningful improvements in your life. You are the expert on yourself, and I look forward to learning about the unique factors that make you who you are and working with you to make positive change. 


Hello! My name is Blake Culley. I am a Deaf, queer, transgender and nonbinary person. My pronouns are they/them and I do not go by Mr, I go by Mx. I was born and raised in Ventura county, I went to public schools all of my childhood and then transferred to California School for the Deaf, Riverside my junior year and graduated there. I ended up moving to the east coast in 2006 for college, Gallaudet University. I graduated with a BA in psychology and a minor in criminal justice. I graduated in 2017 with a degree in school psychology at Gallaudet University. I started my first job as a school psychologist at an all deaf school- Kendall Demonstration Elementary School in Washington, DC for 5 years. My main focus has been working with deaf children and training nationally in various settings on working with deaf queer and gender expansive children in schools. I am happy to be back at home here in California with my fiance, and two dachshunds and I look forward to working with you all! 

Charity Thomann

Pre-Doctoral Student

Blake Culley

School Psychologist


Dr. Ivy Kensinger 

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Alexa Bustamante

Associate Professional Clinical Counselor


I received my Master’s degree in Professional Counseling from Grand Canyon University and have worked in the fields of mental and behavioral health for 4 years. My experience includes conducting individual therapy, marriage family therapy and couples’ therapy. I have facilitated group counseling sessions relevant to sobriety and mental wellness for high-risk families and children. 


My experience includes working with adolescents, young adults and older adults in the rehabilitation center and private practice settings. In addition, I have experience working with crisis intervention for individuals struggling with suicidal ideation. The trainings I received have given me the opportunity to assist individuals experiencing: Depression, Adjustment Disorder, Anxiety, PTSD/trauma, Borderline Personality Disorder, Interpersonal Issues, behavior problems, Intermittent Explosive Disorder, and Autism Spectrum Disorder.


I am a registered Associate Professional Clinical Counselor (APCC# 6492). I received my Master’s degree in Professional Clinical Counseling from Walden University. My experience and training include conducting individual, group, couples, and family therapies. I have experience working with at-risk/high-risk individuals, both children and adults. I have worked in the field of Human Services in various capacities, for more than 25 years. I work in this field to help erase the stigma attached to mental health disorders. I am in this field because I believe in what I do; what I do is assist people with learning how to cope and manage their mental health disorder so they, too, can live a healthier happier life, one day at a time

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Deborah McBride

Associate Professional Clinical Counselor


As a registered Associate Marriage & Family Therapist (AMFT#112456) and Associate Professional Clinical Counselor (APCC#6161), I am an RN, with 14 years of Bariatric Medicine experience, I am passionate about helping others understand how emotional and physical health are woven together, each affecting the other in powerful ways. Many of my patients shared their stories of post-op weight regain, new addictions, history of childhood trauma, and the return of sabotaging behaviors. Realizing the great need for effective psychological services, I felt called to become a therapist. The desire to offer a more holistic approach for those who struggle with obesity motivated me to complete a Master’s degree in Counseling
from La Sierra University in Riverside CA.

I have provided counseling for children, teens, adults, couples and families in Palm Springs through Marsell Consulting, where I worked with individuals, couples and families as we as taught a 16-week course on Anger Management. I was honored to play a small role in providing individual and group counseling services for many of Riverside’s homeless population through Path of Life Ministries.
Together we will explore any psychological roadblocks that are getting in the way of you feeling your best. I use evidenced-based counseling modalities such as Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), Mindfulness Techniques, Emotional Focused and Compassion Therapies to create a personalized treatment plan customized for your specific needs.

Kimberly Coffee

Associate Professional Clinical Counselor APCC6492

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People face tremendous stressors, managing life responsibilities, and relationships. Adversity from childhood experiences, unfulfilled expectations, negative family influences leading to despair breaks relationships and families apart. Addressing origins of pain, acknowledging the present and providing strategic tools helps rebuild, leading to better moments now and ahead. As an empathetic licensed marriage and family therapist, LMFT 107822, Vivian enjoys connecting with clients to explore their unique journey by providing a non-judgmental, safe, welcoming space to grow, to heal, to embrace, to discard. Vivian has life experience with an ex-addict community for over 40 years; gaining professional mental health status as of 2012.  Vivian provides counseling to individuals, couples and families dealing with relationship issues, especially those struggling with addictions and anger.  

   As an EMDR (Eye Movement Desensitization and Reprocessing) Therapist, Vivian uses this model for people to heal from emotional distress resulting from disturbing life experiences.  EMDR therapy quickens the healing process. EMDR therapy shows that the mind can, in fact, heal from psychological trauma much as the body recovers from physical trauma.  Using the eight stage detailed protocols and procedures learned in EMDR therapy training sessions, Vivian helps clients activate their natural healing processes.

   Having first-hand experience of living abroad with her family raising five children (Adult Third Culture Kids); Vivian understands the unique challenges expatriate families face while moving and living abroad. Not only has Vivian experienced the process of culture shock, and cultural adaptation, she has therapeutic skills to help you and your family transition to/from life abroad, particularly the reverse struggle of repatriation. Whether you are facing immigration issues, migration, or repatriation, let’s talk!

Vivian Villalobos

Marriage and Family Therapist


Angelica Thomas

Pre-Doctoral Student

Tristen Ross

Associate Marriage and Family Therapist


Tyron Jackson

Associate Professional Clinical Counselor


Chelsea Lucero

Associate Marriage and Family Therapist AMFT109081

 Tristen is a Marriage and Family Therapist, Professional Clinical Counselor, and earned a Masters of Science in Counseling Psychology from California Baptist University. During her time in graduate school, she worked with adolescents and families in Hemet Unified School district. Prior to Collaborative Psychology Group, she worked with individuals, families, and couples in a private practice center and has experience working in substance abuse treatment. Her style integrates a humanistic, integrative, psychodynamic, and person-centered therapeutic approach. She takes a caring and authentic approach in working with her clients as they journey toward self-actualization. She is passionate about creating space for individuals to explore the essence of their being. She believes that we are all uniquely designed to live life to our fullest potential, and it all begins with healing from interpersonal wounds to achieve wholeness and connection.

I am an Associate Marriage and Family Therapist, and I earned my Masters in Clinical Psychology from Azusa Pacific University. During my time in graduate school, I worked with families, couples, individuals, and children at the Inland Empire Ronald McDonald House to support families who had children and loved ones with medical illnesses. Following this, I worked in a community based setting in Southern California with children and adolescents, alongside their families, to support them in building coping skills and managing their behavioral and mental health challenges. Next, I worked at another community based setting in Northern California where I was supporting Transitional Aged Youth (16-26 year olds) within the foster care system and juvenile justice systems to build independence and self-advocacy while processing aspects of their life and managing their emotional wellness. In addition, I have worked with new parents who are entering a new life stage, and experiencing new emotional challenges. 


My training has allowed me to gain experience working with individuals who have a variety of conditions including but not limited to depression, anxiety, trauma, grief and loss, self harm, suicidality, adhd, impulse control and anger management, relational concerns, and adjustment to changing stages of life. I have worked with clients from diverse backgrounds, and honor each client’s cultural identities. My approach to therapy is unique for each client I work with to create a comfortable space that allows the client to be their most authentic selves. I consistently work from a strengths based, person centered, and trauma informed lens. I look forward to working alongside you and supporting you to live a life full of meaning and connection.

My name is Tyron, I am an Associate Professional Clinical Counselor who graduated with a Master of Science from Cal State San Bernardino. I have a background working with children and adults, but I have primarily worked with adults in the mental health field. My history of work has been with populations of individuals that have dealt with trauma, substance abuse/use,
bipolar, schizophrenia, and individuals on the spectrum. Most of my experience has been
working with the clinical population in the mental health field. I have worked with the clinical population for about 5 years, and I have learned many ways of approaching and connecting with people from a wide range of different backgrounds.


My therapeutical approach to therapy is rooted in Narrative therapy which aims to separate individuals from their problems. In this therapy approach, I intend on supporting individuals in reframing a new life narrative for themselves. In establishing this new narrative, I hope to develop a relationship with my clients where I can help support to empower individuals in meeting their goals and sustaining a healthier lifestyle. I do my best to facilitate an environment that allows for open expression of emotions and thoughts but also develops a space for me and individuals to build a strong relationship to being completely vulnerable and transparent with
each other. Most of all, it is my goals to support and improve the quality of life in individuals that come to see me.

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Bertha Jimenez

Associate Marriage and Family Therapist


Delaney Fennell

Associate Marriage and Family Therapist 

Associate Professional Clinical Counselor



Kathryn Dietz

Associate Marriage and Family Therapist AMFT131599

I am a registered Associate Marriage and Family Therapist (AMFT133267) working
under the supervision of Robyn Norris (LMFT103252). I earned a Master of Science in
Counseling Psychology from California Baptist University. I have experience working with
adolescents, couples, families, and groups. While attending graduate school, I worked at an
emergency crisis shelter for youth ages 11 to 17. I gained experience working with adolescents
suffering from anxiety, depression, anger, and behavior issues. I conducted groups teaching
clients how to decrease their mental health and behavior issues. Additionally, I worked with
adolescents and their families to improve communication and interactions with one another. I learned first-hand how challenging it could be for some individuals to talk about their issues and
life challenges. Therefore, I look forward to providing a space that is safe and free of judgment, where you can feel seen and heard.

I am an Associate Marriage and Family Therapist (AMFT) as well as an Associate Professional Clinical Counselor (APCC). I received a Master’s degree from California Baptist University, where I studied Professional Clinical Counseling and Counseling Psychology. Previous studies have allowed me to obtain an additional degree in
Human Development, which informs my approach with developmentally appropriate practices. I have worked with individuals experiencing anxiety, grief and loss, ADHD, depression, and anger management. Additionally, my experiences have allowed me to counsel adolescents and families of Riverside Unified and San Bernardino schools.
I utilize various therapeutic approaches, including cognitive behavioral therapy CBT), person-centered therapy, and mindfulness-based interventions. Among other aspects of therapy, I am passionate about working alongside individuals, families, and couples to 1) strengthen relationships, 2) improve communication skills, 3)
manage daily stress, 4) alleviate the symptoms of negative feelings, 5) improve self-esteem, 6) manage negative emotions, and 7) facilitate problem solving and conflict resolution. Above all, I strive to offer a warm and compassionate space where clients can feel safe and comfortable to be themselves.

I am an Associate Marriage and Family Therapist (AMFT131599) with a Masters in Counseling from California State University, Fullerton. I have experience working as a counselor at a community clinic and kindergarten through eighth grade school setting. Previous experience includes supporting my local unhoused population and youth in a community shelter. I spent my time working with youth helping them process depression, anxiety, phase of life changes, family conflicts, and behavioral changes. I have worked with a wide range of ages as well as people of different ethnicities, cultures, and sexualities. I feel acknowledging these differences promotes growth and honors the client as unique individuals. I tailor my approach to the individual as the experts of their own lives who need support. My goal is to create a space where clients feel safe and supported enough to share their stories and struggles and learn to live their most fulfilled lives. I use skills from Person-Centered, DBT, CBT, and ACT modalities as well as active listening and psychoeducation on coping skills during sessions to address clients concerns.