Stephen Lewis, M.D.
NPI 1366460594 · Endocrinology, Diabetes & Metabolism Physician · Concord, CA
Stephen Lewis, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Concord, CA (NPI 1366460594).
Provider details
- NPI number
- 1366460594
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G20175 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-07-17
- Last updated
- 2016-09-22
Frequently asked questions
- What is Stephen Lewis's NPI number?
- Stephen Lewis's National Provider Identifier (NPI) is 1366460594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Lewis's specialty?
- Stephen Lewis is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Lewis located?
- Stephen Lewis's practice location on file with NPPES is 2425 East St, Concord, CA 94520-1928.
- What is Stephen Lewis's phone number?
- The practice phone number listed in the NPPES registry for Stephen Lewis is (925) 682-9232.
- Is Stephen Lewis's NPI active?
- Yes — Stephen Lewis's NPI (1366460594) is active in the NPPES registry as of the last update on 2016-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.