William Davis, M.D.
NPI 1336145689 · Family Medicine Physician · Winters, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Davis, M.D. is a Family Medicine Physician provider in Winters, CA (NPI 1336145689).
Provider details
- NPI number
- 1336145689
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G54959 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2005-06-22
- Last updated
- 2023-03-07
Frequently asked questions
- What is William Davis's NPI number?
- William Davis's National Provider Identifier (NPI) is 1336145689, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Davis's specialty?
- William Davis is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Davis located?
- William Davis's practice location on file with NPPES is 107 Main St, Winters, CA 95694-1930.
- What is William Davis's phone number?
- The practice phone number listed in the NPPES registry for William Davis is (530) 795-1110.
- Does William Davis accept Medicare?
- William Davis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Davis's NPI active?
- Yes — William Davis's NPI (1336145689) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.