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John Boyce-Smith, MD
NPI 1255925590 · Internal Medicine Physician · Sonoma, CA
John Boyce-Smith, MD is a Internal Medicine Physician provider in Sonoma, CA (NPI 1255925590).
Provider details
- NPI number
- 1255925590
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- C23592 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(63/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
4863 Grove St
Sonoma, CA 95476-6052
Phone: (415) 613-5338
Street-level locationGet directions
Mailing address
4863 Grove St
Sonoma, CA 95476-6052
Registry dates
- Enumerated
- 2021-02-26
- Last updated
- 2021-02-26
- Certified
- 2021-02-26
Frequently asked questions
- What is John Boyce-Smith's NPI number?
- John Boyce-Smith's National Provider Identifier (NPI) is 1255925590, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Boyce-Smith's specialty?
- John Boyce-Smith is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Boyce-Smith located?
- John Boyce-Smith's practice location on file with NPPES is 4863 Grove St, Sonoma, CA 95476-6052.
- What is John Boyce-Smith's phone number?
- The practice phone number listed in the NPPES registry for John Boyce-Smith is (415) 613-5338.
- Is John Boyce-Smith's NPI active?
- Yes — John Boyce-Smith's NPI (1255925590) is active in the NPPES registry as of the last update on 2021-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.