William Lewis, HTL(ASCP)
NPI 1669352076 · Histology Specialist/Technologist · San Francisco, CA
William Lewis, HTL(ASCP) is a Histology Specialist/Technologist provider in San Francisco, CA (NPI 1669352076).
Provider details
- NPI number
- 1669352076
- Entity type
- Individual
- Primary specialty
- Histology Specialist/TechnologistTechnologists, Technicians & Other Technical Service Providers
- Credential
- HTL(ASCP)
- Sex
- Male
- Sole proprietor
- No
- License
- HTL25369473ASCP
Specialties & taxonomies
Technologists, Technicians & Other Technical Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
- 2025-09-05
- Last updated
- 2025-09-05
- Certified
- 2025-09-05
Frequently asked questions
- What is William Lewis's NPI number?
- William Lewis's National Provider Identifier (NPI) is 1669352076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lewis's specialty?
- William Lewis is listed in the NPPES registry with a primary specialty of Histology Specialist/Technologist (Technologists, Technicians & Other Technical Service Providers).
- Where is William Lewis located?
- William Lewis's practice location on file with NPPES is 1001 Potrero Ave, San Francisco, CA 94110.
- What is William Lewis's phone number?
- The practice phone number listed in the NPPES registry for William Lewis is (628) 206-4953.
- Is William Lewis's NPI active?
- Yes — William Lewis's NPI (1669352076) is active in the NPPES registry as of the last update on 2025-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.