Thomas Stiles, M.D.
NPI 1831118371 · Endocrinology, Diabetes & Metabolism Physician · Saint Helena, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Stiles, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Saint Helena, CA (NPI 1831118371).
Provider details
- NPI number
- 1831118371
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G22053 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-07-18
- Last updated
- 2015-09-30
Frequently asked questions
- What is Thomas Stiles's NPI number?
- Thomas Stiles's National Provider Identifier (NPI) is 1831118371, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Stiles's specialty?
- Thomas Stiles is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Stiles located?
- Thomas Stiles's practice location on file with NPPES is 999 Adams St 201, Saint Helena, CA 94574-1148.
- What is Thomas Stiles's phone number?
- The practice phone number listed in the NPPES registry for Thomas Stiles is (707) 255-8825.
- Does Thomas Stiles accept Medicare?
- Thomas Stiles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Stiles's NPI active?
- Yes — Thomas Stiles's NPI (1831118371) is active in the NPPES registry as of the last update on 2015-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.