Meet Our Team

All Summit Center professionals believe that building trusting relationships with our clients is the foundation of our work, and we are dedicated to focusing on a strengths-based approach to help our clients reach their fullest developmental potential.

Our talented and experienced doctors, evaluators, and other service providers work out of our offices in Northern California (Walnut Creek) and Southern California (Torrance).

Daniel B. Peters, Ph.D.

Executive Director

Co-Founder

Licensed Psychologist,

PSY 16823

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Susan Daniels, Ph.D.

Co-Founder

Educational Consultant

Professor Emerita 

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Michelle L. Freeman, Psy.D.

Associate Director
Director of Assessment

Neuropsychologist, PSY 23888

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Gabriela Bronson-CastainGabriela Bronson-Castain, Psy.D.

Director of Training

Licensed Psychologist,

PSY 23904

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Evaluations

Ellena Chen, Psy.D.

Licensed Psychologist,

PSY31146

Walnut Creek

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Katherine EngKatherine Eng, Ph.D.

Licensed Psychologist,

PSY 21108

Research Coordinator

Supervising Psychologist

Walnut Creek

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Lisa L. Hancock, Ph.D., MBA

Licensed Clinical Psychologist

CA – PSY 31333 / NV – PY1035

Certified Autism Specialist

Torrance

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Amy Parlin FeldmanAmy Parlin Feldman, M.Ed.

Licensed Educational Psychologist

LEP #3900

Evaluator

Walnut Creek

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Jeannie M. Lopez, Ph.D.

Licensed Psychologist/

Neuropsychologist,

PSY 18357

Walnut Creek

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Lisa Nakamura, Psy.D.

Licensed Psychologist,

PSY24188

Walnut Creek

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Jenna Ouye, Ph.D.

Licensed Psychologist,

PSY26489

Walnut Creek

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Rupa Robbins, Ph.D.

Licensed Psychologist,

PSY 31111

Group Therapy Coordinator

Walnut Creek

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Lisa White, Ph.D.

Licensed Psychologist,

PSY 26400

Supervising Psychologist

Walnut Creek

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Brennan Whitley, Psy.D.

Licensed Psychologist,

PSY31143

Walnut Creek

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Counseling & Consultations

Ellena Chen, Psy.D.

Licensed Psychologist,

PSY31146

Walnut Creek

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Kathleen D. Crombie, M.A.,M.Ed.

Parent Consultant

SENG Parent Group Facilitator and Trainer

Walnut Creek

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Mona Mardini, Psy.D.

Licensed Clinical Psychologist, PSY31477

Walnut Creek

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Ginny Ritchey, Ph.D.

Licensed Psychologist, PSY 26238

Walnut Creek

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Rupa Robbins, Ph.D.

Licensed Psychologist,

PSY 31111

Walnut Creek

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Lisa White, Ph.D.

Licensed Psychologist,

PSY 26400

Supervising Psychologist

Walnut Creek

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Paula Wilkes, Ph.D.

Coach and Consultant

Virtual

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Educational Services

Deanna M. Kim, M.Ed.

Educational Therapist

Virtual

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Melanie Soloway, J.D., C.P.E.

Parent Educator

Los Angeles

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Training Program

Sammy DeVincent

Practicum Trainee

Supervised by Mona Mardini, Psy.D., PSY 31477 and Lisa White, Ph.D., PSY 26400

Walnut Creek

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Savannah Miller

Practicum Trainee

Supervised by Michelle Freeman, Psy.D., PSY 23888

Walnut Creek

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Cyrell Roberson, Ph.D.

Credentialed School Psychologist

Psychological Assistant, PSB 94024338

Supervised by Katherine Eng, Ph.D., PSY 21108

Walnut Creek

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Maddison Stokes

Practicum Trainee

Supervised by Katherine Eng, Ph.D., PSY 21108

Walnut Creek

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Administration Team

Shelly Jeffra

Operations Manager

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Michelle Mortara

Information and Services Coordinator

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Lynne Bland

Office Administrator

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Diana Hanson

Office Administrator
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Elizabeth Shook

Communications Manager

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