IndividualActive
Jennifer Williams, MD
NPI 1821050766 · Family Medicine Physician · Sebastopol, CA
Jennifer Williams, MD is a Family Medicine Physician provider in Sebastopol, CA (NPI 1821050766).
Provider details
- NPI number
- 1821050766
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G55656 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
652 Petaluma Ave
Suite F
Sebastopol, CA 95472-4266
Phone: (707) 823-2334
Fax: (707) 823-3007
Street-level locationGet directions
Mailing address
652 Petaluma Ave
Sebastopol, CA 95472-4266
Registry dates
- Enumerated
- 2006-04-05
- Last updated
- 2012-01-06
Frequently asked questions
- What is Jennifer Williams's NPI number?
- Jennifer Williams's National Provider Identifier (NPI) is 1821050766, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Williams's specialty?
- Jennifer Williams is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Williams located?
- Jennifer Williams's practice location on file with NPPES is 652 Petaluma Ave, Sebastopol, CA 95472-4266.
- What is Jennifer Williams's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Williams is (707) 823-2334.
- Is Jennifer Williams's NPI active?
- Yes — Jennifer Williams's NPI (1821050766) is active in the NPPES registry as of the last update on 2012-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.