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Michael Sommer, MD
NPI 1366578965 · Orthopaedic Surgery Physician · Sonoma, CA
Michael Sommer, MD is a Orthopaedic Surgery Physician provider in Sonoma, CA (NPI 1366578965).
Provider details
- NPI number
- 1366578965
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G-14212 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 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
368 Perkins St
Sonoma, CA 95476-6827
Phone: (707) 939-0930
Fax: (707) 939-0805
Street-level locationGet directions
Mailing address
368 Perkins St
Sonoma, CA 95476-6827
Registry dates
- Enumerated
- 2007-02-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Sommer's NPI number?
- Michael Sommer's National Provider Identifier (NPI) is 1366578965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Sommer's specialty?
- Michael Sommer is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Sommer located?
- Michael Sommer's practice location on file with NPPES is 368 Perkins St, Sonoma, CA 95476-6827.
- What is Michael Sommer's phone number?
- The practice phone number listed in the NPPES registry for Michael Sommer is (707) 939-0930.
- Is Michael Sommer's NPI active?
- Yes — Michael Sommer's NPI (1366578965) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.