Stephen B. Lewis, M.D.
Endocrinology, Diabetes & Metabolism Physician · Concord, CA
Stephen B. Lewis, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Concord, California, and NPI 1366460594, issued on Jul 17, 2006. Check the license (California G20175, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Stephen B. Lewis
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- G20175 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2425 East St, Concord, CA 94520
- Phone
- (925) 682-9232
- Enumerated
- Jul 17, 2006
- Record last updated
- Sep 22, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (925) 676-2198
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 2425 East St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arlene Vicencio, PAPhysician Assistant1871891747
Verify Stephen B. Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G20175Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Stephen B. Lewis among 1,131 endocrinology, diabetes & metabolism physician records in California
Stephen B. Lewis, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileNo · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2016 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,131 in California → Every provider in Concord → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Hadeel Al-Marsumi, MDConcord, CA 945201285130096
- Anita Bhat, M.D.Concord, CA 945201902068562
- Lindsay Chong, M.D.Concord, CA 945201205150448
- Parisa Mehran, M.DConcord, CA 945201699159939
- Jianyu Xu, M.D.Concord, CA 945201538499934
- Jaspreet Kaur, M.D.Danville, CA 945261497913206
- Hla Win, M.DAntioch, CA 945311629262647
- Teodor Duro, MDFairfield, CA 945331780180315
Common questions
What is Stephen B. Lewis, M.D.'s NPI number?
Stephen B. Lewis, M.D.'s National Provider Identifier (NPI) is 1366460594, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen B. Lewis, M.D. located?
The NPPES record lists a practice address at 2425 East St, Concord, CA, 94520. Phone: (925) 682-9232. Providers update this record themselves, so call before visiting.
How can I verify Stephen B. Lewis, M.D.'s license?
NPPES lists California license number G20175, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.