Lawrence Williamson, M.D.
NPI 1508821273 · Family Medicine Physician · Windsor, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lawrence Williamson, M.D. is a Family Medicine Physician provider in Windsor, CA (NPI 1508821273).
Provider details
- NPI number
- 1508821273
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A73495 (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
- 2006-04-18
- Last updated
- 2010-05-04
Frequently asked questions
- What is Lawrence Williamson's NPI number?
- Lawrence Williamson's National Provider Identifier (NPI) is 1508821273, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Williamson's specialty?
- Lawrence Williamson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Williamson located?
- Lawrence Williamson's practice location on file with NPPES is 911 Medical Center Plaza, Windsor, CA 95492-7817.
- What is Lawrence Williamson's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Williamson is (707) 837-0170.
- Does Lawrence Williamson accept Medicare?
- Lawrence Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lawrence Williamson's NPI active?
- Yes — Lawrence Williamson's NPI (1508821273) is active in the NPPES registry as of the last update on 2010-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.