IndividualActive
Spencer Williams, B.A.
NPI 1790806362 · Research Study Specialist · San Francisco, CA
Provider details
- NPI number
- 1790806362
- Entity type
- Individual
- Primary specialty
- Research Study SpecialistOther Service Providers
- Credential
- B.A.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% 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
755 S Van Ness Ave
San Francisco, CA 94110-1908
Phone: (415) 642-4517
Fax: (415) 695-6961
Street-level locationGet directions
Mailing address
1708 Filbert St Apt 4
San Francisco, CA 94123-3629
Registry dates
- Enumerated
- 2007-04-02
- Last updated
- 2007-07-08
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.