We offer Teletherapy sessions for all ages.

Call us today: 818 886 3531

Susan Ashley, Ph.D. is the founder and director of Ashley Psychology Center, opening in 1991. Dr. Ashley has hand-picked a team of therapists, each with particular talents, providing empathic, supportive and effective help for children, adolescents, adults, parents and families. The Center uses a team approach and Dr. Ashley personally oversees every case.

The Center has three main specialities: 1) Children, teens, and families, 2) Evaluation and treatment of Personal Injury Cases for children, teens and adults, and 3) Forensic Psychology. We have a particular speciality in ADD/ADHD and Asperger’s/High Functioning Autism Spectrum, evaluating, diagnosing, and treating all ages from pre-school through adulthood.

Dr. Susan Ashley

Dr. Susan Ashley, Ph.D.

PSY 11358

Ashley Psychology Center

Susan Ashley, Ph.D. is a graduate of UCLA and California School of Professional Psychology.  She has been a licensed psychologist since 1990. She has a duo-practice with an emphasis on children, teens and families, and emphasis on forensic psychology.


Dr. Ashley’s training with children began during her undergraduate work at UCLA.  She trained in the UCLA Child Study Laboratories, UCLA Lovaas Autism Project, UCLA Neuropsychiatric Institute Early Childhood Learning Program and UCLA Child Care Services.  Her graduate training was done at San Fernando Valley Child Guidance Clinic, Glendale Family Services, Parents United, and Camarillo State Hospital.  After earning her license as a psychologist, Dr. Ashley spent 12 years providing inpatient psychological testing to teens and adults at Anacapa Hospital.  She conducted psychological evaluations for Children’s Protective Services, addressing parenting capacity, impact of abuse on children and teens, and readiness for adoption.  She has lectured on and conducted psychological evaluations of potential surrogates and pre-adoption evaluations of parents. Dr. Ashley has lectured in 36 states to professionals on the topic of childhood disorders. She has been featured on numerous radio shows and magazines across the country.  She is the author of three best selling books:

The ADD & ADHD Answer Book: Sourcebooks, Inc. 2005 Recommended by American Psychiatric Association and American Academy of Child and Adolescent Psychiatry ADHD Parents Medication Guide  

The Asperger’s Answer Book: Sourcebooks, Inc. 2006 Winner of NAPPA Honor Award and Winner of ForeWord Finalist Award

1000 Best Tips for ADHD: Expert Answers and Bright Advice to Help You and Your Child. Sourcebooks, Inc. 2012


Dr. Ashley’s forensic training began as a pre-doctoral intern at Camarillo State Hospital, evaluating and treating mentally ill and developmentally delayed criminal offenders.  Her post-doctoral fellowship at Los Angeles County Mental Health Conditional Release Program provided training in evaluating mentally ill criminal offenders.  Returning to Camarillo State Hospital as a staff psychologist, Dr. Ashley provided treatment and evaluations for mentally ill criminal offenders.  She has been on the expert witness panel of Ventura County Superior Courts since 1996, providing psychological evaluations for competency, insanity, sentencing, and dangerousness.  Since 1999 she has been a consultant to Ventura County District Attorney’s Office providing psychological evaluations for the Major Crimes Divisions.  She also provides consultation and evaluation to Ventura County Public Defender’s Office and to private defense attorneys.  Dr. Ashley has supervised the evaluation and treatment of more than 2,000 Personal Injury cases and has provided expert witness testimony for a variety of victims of catastrophic injuries.

Meet our Staff

Stacey Harvey, Psy.D.

Ashley Psychology Center

Registered Psychological Assistant PSB 94024138

Dr. Stacey Harvey is a child, adolescent and adult psychotherapist. She holds a doctorate degree in Applied Clinical Psychology from the Chicago School of Professional Psychology. She completed two Masters degrees, one in Clinical Psychology from Phillips Graduate Institute, and the other in Educational Psychology and Counseling with an Early Childhood Education emphasis from California State University. Her Bachelor’s degree in Psychology and Child Development was completed at California State University Northridge (CSUN).

Since joining Ashley Psychology Dr. Harvey has focused her work on two specialties: 1) trauma and 2) behavior problems. Using Cognitive-Behavior Therapy, (CBT) Dr. Harvey helps individuals experiencing distress from auto accidents, dog bites and other traumatic injuries. Using CBT, Behavior Therapy, Play, Art, and Family Therapy, Dr. Harvey works with children and parents to help manage symptoms of AD/HD, Oppositional Defiant Disorder, behavioral and mood disorders.

Dr. Harvey’s clinical work has yielded her a wide array of training experiences. She trained both in her Master’s and Doctoral program at Children’s Hospital Los Angeles, treating children and teens diagnosed with cancer, chronic illness, birth defects or catastrophic injuries. Her medical psychology training continued at Northridge Hospital Center for Rehabilitation Medicine where she provided psychotherapy and neuropsychological testing for children, teens and adults who experienced brain injuries.

Additional Doctoral training was completed at Vista Del Mar Child and Family Services, evaluating and treating children, teens, families and couples. With an emphasis on working with trauma, behavioral, emotional and learning problems, Dr. Harvey conducted evidenced based treatments, including play, cognitive behavioral, and psychodynamic psychotherapy. Dr. Harvey also trained for two years at Ventura County Juvenile Justice Complex evaluating, testing and treating juvenile offenders.

Dr. Harvey also brings to the practice a long background in social skills development for children and teens. Her work at Pacific Coast Region BBYO as Executive Regional Director provided leadership, self-esteem, empowerment and social skills development for adolescents. At Kadima Hebrew Academy she was a Camp and Program Director, developing individual plans and providing social programs for Preschool through Eight grade students.

Dr. Harvey provides evaluation, testing and psychotherapy for children, teens, adults, families and couples. She is working towards licensure as a psychologist under Susan Ashley, Ph.D. Licensed Psychologist PSY11358.

Tiffany Witwit, M.A., LMFT 87426

TiffanyTiffany Witwit, M.A., is a licensed Marriage and Family Therapist. She earned her Bachelor of Science degree in Psychology from Woodbury University, Burbank, California. Her Master of Arts degree was earned in Clinical Psychology with an emphasis in Marriage and Family Therapy from Pepperdine University, accredited by the American Psychological Association. Tiffany has been a part of the Ashley Psychology Center since 2003.

Working with families and parents of children with special needs is a primary focus in Tiffany’s practice. She knows from her own first hand experience, the difficulties faced by parents raising a child with special needs. She can provide support, guidance and direction while assisting parents in coping, adjusting and facing challenges that they will encounter by having a special needs child. She understands how stressful and straining raising a special needs child can be on all aspects of life and she helps to provide support while strengthening parent relationships and improving parenting skills. She provides her clients with helpful navigation services to find client specific community resources that can help parents and families utilize outside referrals to the best of their advantage.

Tiffany has extensive experience working with children, teens and adults on the Autism Spectrum; those with Asperger’s Syndrome and High Functioning Autism. Tiffany works with the client to help improve social skills, occupational or school functioning, and interpersonal relationships. Tiffany helps build reciprocal social skills, improve theory of mind abilities and increase emotional intelligence.

Tiffany also specializes in treating children, teens and adults who have experienced trauma. She has extensive experience working with clients who are encountering symptoms of Post Traumatic Stress Disorder, Anxiety, Depression, Adjustment Disorder, and Acute Stress Disorder caused by exposure to a psychological stressor such as but not limited to, motor vehicle accidents, dog attacks, sexual harassment and wrongful death incidents.

Tiffany’s focus in treatment is to assist her clients in restoring them to a pre- accident level of functioning by using a client focused and collaborative approach that helps the client move at their own pace. Together Tiffany and her clients develop a specific treatment plan that is individually and uniquely catered to their needs and goals for therapy.

Tiffany’s background in AD/HD and Asperger’s is well grounded. She served as the researcher for Dr. Ashley’s internationally recognized book “The ADD and ADHD Answer Book: The Top 275 Questions Parents Ask” and for Dr. Ashley’s second book, “The Asperger’s Answer Book: The Top 300 Questions Parents Ask”, a winner of the NAPPA Honor Award for books in parenting and the ForeWord Book Award.

As a psychotherapist, Tiffany provides an eclectic approach, often drawing from multiple theoretical orientations that are individually specific to the clients needs. She often uses Cognitive Behavioral, Person Centered, Family Systems, Existential and Psychodynamic interventions.

Evelyn Marroquin, M.S, Licensed MFT 98778

Bilingual: English and Spanish

EvelynEvelyn Marroquin earned her Bachelor of Arts degree in Psychology and her Masters of Science in Educational Psychology and Counseling with an emphasis on Marriage and Family Therapy at California State University Northridge. She was on the Dean’s List and graduated With Distinction.

Evelyn specializes in treating children, teen and adults who have experienced trauma. She has extensive training in Trauma Assessment, Trauma Focused Cognitive Behavioral Therapy, Cognitive Processing Therapy, Domestic Violence, Family Violence, Sexual Assault, and Date Rape.

Evelyn uses Evidenced Based Practices, therapeutic techniques clinically proven in research studies to be effective in helping individuals overcome their traumatic experience.

Adults, teens and children who have experienced an auto, pedestrian or bicycle accident will find Evelyn to provide caring, effective treatment and rapid relief. Evelyn’s approach is short term treatment designed to help individuals quickly return to their pre-accident life. She will teach methods to help clients overcome the disruptive symptoms that surface after an accident, including restoring their ability to comfortably drive, ride a bike or cross streets again, overcome fear of another accident, stop the nightmares and repeated thoughts and memories of the accident, and manage the anxiety and stress caused by the accident.

Dog bite cases are also treated by Evelyn. In addition to using Cognitive Behavioral Therapy, Evelyn also uses a slow-go-at-your-own pace contact with a therapy dog during treatment sessions. Treatment will allow people of all ages to overcome their fear of dogs.

Accident and dog bite cases can be treated on a lien basis.

Elita Hamala, M.A. LMFT 51135

Ashley Psychology CenterElita Hamala, M.A., is a licensed Marriage and Family Therapist.

She earned her Bachelor of Science degree in Psychology and Business Management from Woodbury University, Burbank, California. Her Master of Arts degree was earned in Clinical Psychology with an emphasis in Marriage and Family Therapy from Pepperdine University, accredited by the American Psychological Association. She was a National Dean’s List Library of Congress Member and distinguished member of the Psi Chi National Honor Society in Psychology.

Elita has extensive experience interviewing, evaluating, diagnosing and treating adolescents and adults with mood, behavior and substance use disorders. After five years of service in a private psychiatric hospital, Elita joined Ashley Children’s Psychology Center. She provides evaluation and treatment services for children, adolescents and adults with histories of trauma, mood and adjustment disorders, anxiety, depression, behavior problems and attention deficit disorder.

Elita also specializes in Post-traumatic Stress Disorder, (PTSD). She works with clients of all ages, from children to the elderly, who have experienced a traumatic event. She uses focused short-term therapy to help individuals heal rapidly from their emotional distress and get back to their pre-trauma functioning. She helps individuals overcome their fears from dog bites, car accidents, physical and sexual assault, victims of crime and other traumatic events.

She works with a broad range of issues across all age groups. Her techniques include Behavior Therapy, Cognitive Behavior Therapy (CBT) and Brief Solution Focused Therapy. She focuses on short-term treatment with the goal of helping to eliminate problems as quickly as possible.

Astrid Santic-Jacobs, LMFT License MFC43833

Ashley Psychology CenterAstrid has years of experience treating children, teens, young adults and families. She has helped families living with ADD, ADHD, Asperger’s, Oppositional Defiant Disorder, High Functioning Autism, depression, anxiety, social issues, learning disabilities, trauma, grief and loss. She has worked in school settings, counseling children and teens with behavioral, social and learning issues. She has lead parent/teacher meetings and IEPs, and provided college and career counseling and helped late teens and young adults with transition plans.


Astrid uses a variety of therapeutic methods to meet each child’s and family’s need, including behavior modification, cognitive behavior therapy (CBT), dialectic behavior therapy (DBT), trauma focused CBT, family systems therapy, psychodynamic therapy, and relational therapy. For younger children play and art therapy is used to foster expression and identification of feelings. Psycho-education is used for children and parents to widen the tool box of positive coping skills.


In addition to her child/teen focused work, Astrid also treats adults. Issues of anxiety, depression, trauma, life transitions and bereavement are treated with a combination of the best therapeutic tools matched for each individual client. Cognitive Behavioral Therapy (CBT), Dialectic Behavior Therapy (DBT), Psychodynamic, Family Systems Therapy, and Relational Therapy are Astrid’s favored therapeutic techniques.

Call us today and ask about our
New Patient Consultation

818 886 3531

9036 Reseda Blvd
Suite 204
Northridge, CA 91324

Office Hours

Mon 8:30 am – 7:00 pm
Tue 8:30 am – 7:00 pm
Wed 8:30 am – 7:00 pm
Thu 3:00 pm – 7:00 pm
Fri 8:30 am – 7:00 pm
Sat By appointment

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