Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Marissa Mannina, PHD, LP

Individual provider Clinical Psychologist · NPI 1790922532

Dr. Marissa Mannina, PHD, LP is a Clinical Psychologist in Walnut Creek, California. Qualified in 2006, 20 years ago. Practices with Pacific Coast Psychiatric Associates Inc, a 632-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
20
Licensed in
CA
In the registry since
2009
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2970 Camino Diablo Ste 300
Walnut Creek, CA 94597-4001
Phone: (925) 282-1778
Fax: (415) 296-5299
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 39500 Liberty St, Fremont, CA 94538-2211 — (510) 770-8040

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 24937 (CA)

Record details

NPI number1790922532
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD , LP
Sole proprietorNo
NPI enumeratedJanuary 15, 2009
Last updated in NPPESJuly 14, 2025
Certification dateJuly 14, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Pacific Coast Psychiatric Associates Inc — 632 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Walnut Creek