William Black, PA-C
NPI 1609172758 · Physician Assistant · San Francisco, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Black, PA-C is a Physician Assistant provider in San Francisco, CA (NPI 1609172758).
Provider details
- NPI number
- 1609172758
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 5953 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
- 2011-02-08
- Last updated
- 2018-11-29
Frequently asked questions
- What is William Black's NPI number?
- William Black's National Provider Identifier (NPI) is 1609172758, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Black's specialty?
- William Black is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Black located?
- William Black's practice location on file with NPPES is 170 Columbus Ave Ste 110, San Francisco, CA 94133-5160.
- What is William Black's phone number?
- The practice phone number listed in the NPPES registry for William Black is (415) 965-8050.
- Does William Black accept Medicare?
- William Black is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Black's NPI active?
- Yes — William Black's NPI (1609172758) is active in the NPPES registry as of the last update on 2018-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.