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Provider Bios

Tammy A. Ouellette, Psy.D.
Clinical Health and Neuropsychologist
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Dr. Tammy Ouellette has a private practice in Fullerton, California where she has been focusing on Health and Neuropsychology since she acquired her Psychology License in 2005. Dr. Ouellette holds a bachelor’s degree in Psychology from California State University, Fullerton: with Honors, a master’s degree in Psychology, and a Doctorate in Clinical Psychology, Health emphasis 

Darlene Valdez-Olguin, LMFT, Ph.D.
 Licensed Marriage and Family Therapist

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Darlene Valdez-Olguin, LMFT, Ph.D. is a Licensed Marriage, Family Therapist with a Ph.D. in Psychology. She has training and experience in treating patients with psychiatric disorders, specializing in grief counseling, eating disorders, mood disorders and Alzheimer’s Disease and other dementias. Her therapeutic approaches focus on Cognitive-Behavioral

Andrea DuRant Heitz, LCSW
Licensed Clinical Social Worker
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Andrea DuRant Heitz is a new Licensed Clinical Social Worker to our practice. Please call the office for more information and scheduling.

Melissa Herrera, Psy.D.
Registered Psychological Associate
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Dr. Melissa Herrera is a Registered Psychological Associate. She obtained her Doctorate in Clinical Psychology from The Chicago School of Professional Psychology. Dr. Herrera has dedicated her career to...

Mayra Alvarado, MSW
Associate Clinical Social Worker
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Mayra Alvarado is an Associate Clinical Social Worker who has experience supporting clients navigate various concerns such as anxiety, depression, relationship conflicts, life transitions...

Kaylea Philobos, M.S.
Health and Wellness Coach
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Kaylea Philobos is our Health Promotion and Wellness director who has experience collaborating with allied health professionals focusing on injury prevention, rehabilitation, and health promotion. She earned her bachelor’s degree in Experimental Psychology in 2017 from the ...

Beverly Osaah, M.A.
Registered Associate Marriage and Family Therapist
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Beverly Osaah is a registered  associate marriage and family therapist. She earned her bachelor’s degree in Sociology with a minor in developmental psychology from CSU Channel Islands in 2016. She went on to earn her master’s in clinical psychology with an emphasis in marriage and family...

Kayla Lim, M.S.
Associate Marriage & Family Therapist
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Kayla Lim is a Registered Associate Marriage and Family Therapist dedicated to helping individuals navigate their healing journeys by promoting harmony in mental, physical, and spiritual well-being. She holds a Bachelor’s degree in Sociology with a...

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