Mosi Williams, PSYD
NPI 1134648041 · Clinical Social Worker · San Francisco, CA
Mosi Williams, PSYD is a Clinical Social Worker provider in San Francisco, CA (NPI 1134648041).
Provider details
- NPI number
- 1134648041
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- PSYD
- Sex
- Male
- Sole proprietor
- No
- License
- 114259 (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
8 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)
- 1179 N Mcdowell BlvdPetaluma, CA 94954-6559Phone: (707) 559-7500
Registry dates
- Enumerated
- 2017-09-12
- Last updated
- 2023-03-31
- Certified
- 2023-03-31
Frequently asked questions
- What is Mosi Williams's NPI number?
- Mosi Williams's National Provider Identifier (NPI) is 1134648041, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mosi Williams's specialty?
- Mosi Williams is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mosi Williams located?
- Mosi Williams's practice location on file with NPPES is 400 Parnassus Ave Fl 4, San Francisco, CA 94143-2202.
- What is Mosi Williams's phone number?
- The practice phone number listed in the NPPES registry for Mosi Williams is (415) 476-4170.
- Is Mosi Williams's NPI active?
- Yes — Mosi Williams's NPI (1134648041) is active in the NPPES registry as of the last update on 2023-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.