Marissa Diaz, LCSW, PPSC
NPI 1902579030 · School Social Worker · Garden Grove, CA
Marissa Diaz, LCSW, PPSC is a School Social Worker provider in Garden Grove, CA (NPI 1902579030).
Provider details
- NPI number
- 1902579030
- Entity type
- Individual
- Primary specialty
- School Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW, PPSC
- Sex
- Female
- Sole proprietor
- No
- License
- 122024 (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
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
5 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 (4)
- 947 S Anaheim Blvd Ste 260Anaheim, CA 92805-5591Phone: (714) 247-0300Fax: (714) 259-1598
- 1100b N Tustin Ave Ste aSanta Ana, CA 92705-3505Phone: (714) 247-0300Fax: (714) 259-1598
- 1 Hope DrTustin, CA 92782-0221Phone: (714) 247-0300Fax: (714) 259-1598
- 14642 Newport Ave Ste 200Tustin, CA 92780-6058Phone: (714) 247-0300Fax: (714) 259-1598
Registry dates
- Enumerated
- 2021-07-26
- Last updated
- 2026-05-18
- Certified
- 2026-05-18
Frequently asked questions
- What is Marissa Diaz's NPI number?
- Marissa Diaz's National Provider Identifier (NPI) is 1902579030, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Diaz's specialty?
- Marissa Diaz is listed in the NPPES registry with a primary specialty of School Social Worker (Behavioral Health & Social Service Providers).
- Where is Marissa Diaz located?
- Marissa Diaz's practice location on file with NPPES is 10331 Stanford Ave, Garden Grove, CA 92840-6351.
- What is Marissa Diaz's phone number?
- The practice phone number listed in the NPPES registry for Marissa Diaz is (714) 663-6000.
- Is Marissa Diaz's NPI active?
- Yes — Marissa Diaz's NPI (1902579030) is active in the NPPES registry as of the last update on 2026-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.