William Brimmer
NPI 1225212269 · Clinical Social Worker · South San Francisco, CA
William Brimmer is a Clinical Social Worker provider in South San Francisco, CA (NPI 1225212269).
Provider details
- NPI number
- 1225212269
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 18855 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2007-12-27
- Last updated
- 2021-04-19
- Certified
- 2021-04-19
Frequently asked questions
- What is William Brimmer's NPI number?
- William Brimmer's National Provider Identifier (NPI) is 1225212269, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Brimmer's specialty?
- William Brimmer is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Brimmer located?
- William Brimmer's practice location on file with NPPES is 170 S Spruce Ave, South San Francisco, CA 94080-4557.
- What is William Brimmer's phone number?
- The practice phone number listed in the NPPES registry for William Brimmer is (415) 265-7384.
- Is William Brimmer's NPI active?
- Yes — William Brimmer's NPI (1225212269) is active in the NPPES registry as of the last update on 2021-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.