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William Williams, MD
NPI 1972685956 · Specialist · West Covina, CA
William Williams, MD is a Specialist provider in West Covina, CA (NPI 1972685956).
Provider details
- NPI number
- 1972685956
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G339901 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(90/100 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
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
420 S Glendora Ave
West Covina, CA 91790-3001
Phone: (626) 919-4333
Street-level locationGet directions
Mailing address
420s Glendora Ave
West Covina, CA 91790-3001
Registry dates
- Enumerated
- 2006-10-19
- Last updated
- 2016-06-24
Frequently asked questions
- What is William Williams's NPI number?
- William Williams's National Provider Identifier (NPI) is 1972685956, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Williams's specialty?
- William Williams is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is William Williams located?
- William Williams's practice location on file with NPPES is 420 S Glendora Ave, West Covina, CA 91790-3001.
- What is William Williams's phone number?
- The practice phone number listed in the NPPES registry for William Williams is (626) 919-4333.
- Is William Williams's NPI active?
- Yes — William Williams's NPI (1972685956) is active in the NPPES registry as of the last update on 2016-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.