Marissa Mannina, PHD, LP
NPI 1790922532 · Clinical Psychologist · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Mannina, PHD, LP is a Clinical Psychologist provider in Walnut Creek, CA (NPI 1790922532).
Provider details
- NPI number
- 1790922532
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD, LP
- Sex
- Female
- Sole proprietor
- No
- License
- 24937 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 39500 Liberty StFremont, CA 94538-2211Phone: (510) 770-8040
Registry dates
- Enumerated
- 2009-01-15
- Last updated
- 2025-07-14
- Certified
- 2025-07-14
Frequently asked questions
- What is Marissa Mannina's NPI number?
- Marissa Mannina's National Provider Identifier (NPI) is 1790922532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Mannina's specialty?
- Marissa Mannina is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Marissa Mannina located?
- Marissa Mannina's practice location on file with NPPES is 2970 Camino Diablo Ste 300, Walnut Creek, CA 94597-4001.
- What is Marissa Mannina's phone number?
- The practice phone number listed in the NPPES registry for Marissa Mannina is (925) 282-1778.
- Does Marissa Mannina accept Medicare?
- Marissa Mannina is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Mannina's NPI active?
- Yes — Marissa Mannina's NPI (1790922532) is active in the NPPES registry as of the last update on 2025-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.