IndividualActive
John Schafer, MD
NPI 1386605228 · Family Medicine Physician · Sonoma, CA
John Schafer, MD is a Family Medicine Physician provider in Sonoma, CA (NPI 1386605228).
Provider details
- NPI number
- 1386605228
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G62440 (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
270 Perkins Street
Sonoma, CA 95476-6955
Phone: (707) 938-3131
Fax: (707) 938-3678
Street-level locationGet directions
Mailing address
270 Perkins Street
Sonoma, CA 95476-6955
Registry dates
- Enumerated
- 2006-03-30
- Last updated
- 2015-05-07
Frequently asked questions
- What is John Schafer's NPI number?
- John Schafer's National Provider Identifier (NPI) is 1386605228, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Schafer's specialty?
- John Schafer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Schafer located?
- John Schafer's practice location on file with NPPES is 270 Perkins Street, Sonoma, CA 95476-6955.
- What is John Schafer's phone number?
- The practice phone number listed in the NPPES registry for John Schafer is (707) 938-3131.
- Is John Schafer's NPI active?
- Yes — John Schafer's NPI (1386605228) is active in the NPPES registry as of the last update on 2015-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.