You’re in good hands at Summit Estate.

Dedicated. Professional. Ethical. The Team at Summit Estate comprises over 40 caring and supportive staff members whose primary purpose is to help our clients get “better” both physically and emotionally, and to return home and to work healthy, happy and free from the substances that have negatively impacted everyone from the person seeking treatment to their family, friends and co-workers.

Please meet the Summit Estate Team:

tyler fitzgerald summit estate

Tyler Fitzgerald, LMFT

Clinical Director

As the Clinical Director, I feel that truly individualized treatment is a top priority.

jon heller member of treatment team

Jon Heller, RADT-1

Director of Admissions
dr lisa benya member of the treatment team at summit estate

Dr. Lisa Benya D.O.

Internal Medicine
angela goncalves summit estate

Angela Goncalves

Director of Operations
sergei vidov summit estate

Sergei Vidov

Chief Executive Officer
joan borsten member of california treatment team

Joan Borsten

Executive Director
anna ovdienko summit estate

Anna Ovdienko

Director of Organizational Development
roshin kaduthanathu abraham summit estate

Roshin Abraham, LLPC, LAADC

Lead Residential Therapist

The field of substance abuse treatment and family therapy is something I'm passionate about and brings me a great sense of gratification.

megan duffy summit estate

Megan Duffy, ASW

Outpatient Coordinator/Therapist Associate

“My priority is providing person-centered therapy to clients and treating the whole human being, not just the symptoms.”

david jordan summit estate

David Jordan, M.S. AMFT

Therapist Associate

David has pursued professional service and education in addiction and mental health recovery for the past 10+ years.

nadine emami summit estate

Nadine Emami, MFT-I, RADT_I

Therapist Intern
shelley mcalpine summit estate

Shelley E. McAlpine, M.A., LAADC

jeromy rutter summit estate

Jeromy Rutter

Operations Administrator
judy isaac summit estate

Judy Isaac

Administration Coordinator

Judy’s passion is to help others struggling with addiction and dual diagnosis.

debbie clarke summit estate

Debbie Clarke


Debbie has been helping people overcome substance abuse problems for over a decade.

jessica fonseca summit estate

Jessica Fonseca, RADT_I

Program Technician
annee deleware summit estate

Annee Delaware, LPT/LVN, CHT, EAT

Group Facilitator
stephen m mohaupt summit estate

Inga Roizman

Admissions Coordinator
kc sharak summit estate

KC Sharak


KC is a Business Management professional specializing in providing day-to-day bookkeeping services.

melissa luna summit estate

Melissa Luna, CADC II, ICADC

Program Manager
martha sanchez summit estate

Martha Sanchez

sergio guzman summit estate

Sergio Guzman

stephen m mohaupt summit estate

Jason Giles, MD

Healthcare Practitioner
stephen m mohaupt summit estate

Stephen M Mohaupt, MD

Healthcare Practioner
summit estate martha sanchez

Ma Luisa Arreguin

angelica chavez summit estate

Angelica Chavez

stephen m mohaupt summit estate

Isabel Guzman

stephen m mohaupt summit estate

Josh Armbruster

SLE House Manager
amanda smith summit estate

Amanda Smith, LVN

Lead Licensed Vocational Nurse
alma corina galvin summit estate

Alma Carina Galvan, LVN

Licensed Vocational Nurse
nikki jimenez summit estate

Nikki Jimenez, LVN

Licensed Vocational Nurse
stephen m mohaupt summit estate

Tatayana McGovern, LVN

Licensed Vocational Nurse
stephen m mohaupt summit estate

Ariane Merkel, LVN

Licensed Vocational Nurse
elizabeth hernandez summit estate

Elizabeth Hernandez

Medical Biller & Reimbursement Specialist