Larry Hickman

Executive Director/ Administrator

larry.hickman@questprograms.org
510-467-4250 / 760-983-3578

Nikki Lopez, MA

Case Manager / Administrator (San Diego)

nikki.lopez@questprograms.org
619-722-5472

Grace Winquist, MA, APCC

Clinical Head of Service

grace.winquist@questprograms.org

Marc Campos, Ph.D., LCSW

Clinical Supervisor

Michelle Vidana, LPCC

Clinical Supervisor

Judith Diaz, AMHNP-BC

Psychiatric Nurse Practitioner

Claudia Nelson, MSW, ACSW

Social worker (Bay Area)

claudia.nelson@questprograms.org
510-833-0789

Isela Sahagun, MSW, ACSW

Social worker (Bay Area)

isela.sahagun@questprograms.org
510-999-3887

Chanda Delifus, MS

Social Worker / Program Manager (Inland Empire)

chanda.delifus@questprograms.org
951-382-3271

Anna Pantoja, MSW, ACSW

Case Manager (San Diego)

anna.pantoja@questprograms.org
619-756-8614

Cecilia Esparza, MS, AMFT

Program Manager / Case Manager (Imperial Valley)

cecilia.esparza@questprograms.org
760-273-5392

Melvyn Mahon, MS, JD

Mental Health Rehab Specialist

melvyn.mahon@questprograms.org
347-525-5538

Mariana Smith

Case Manager (San Diego)

mariana.smith@questprograms.org
619-756-8614