Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Richard C. Thomas, MD

Pediatrics Physician in Antioch, CA · enumerated 2006 · practices at Kaiser Foundation Health Plan Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1649358706

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Registry record

Entity type Individual (Type 1)

Name Richard C. Thomas

Credential MD

Sex Male

Practice address 3400 Delta Fair Blvd, Antioch, CA, 94509

Phone (925) 779-5000

Enumeration date Nov 2, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G56776 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G567760	Medicaid	CA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Richard Thomas's NPI record?

Cross-check NPI 1649358706 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1649358706 active?

Yes, as of the latest NPPES snapshot, NPI 1649358706 is active (record last updated 2007-07-08).

Other providers at this practice address

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Barbara Rhoades Family Nurse Practitioner · Antioch, CA NPI 1215929914 Bridgette Joseph-Green Adult Health Nurse Practitioner · Antioch, CA NPI 1720193220 Peter Matel Family Medicine Physician · Antioch, CA NPI 1891880514 Nahid Nazminia Internal Medicine Physician · Antioch, CA NPI 1831277326 Gulshan Panjwani Internal Medicine Physician · Antioch, CA NPI 1548348030 Irina Bronstein Internal Medicine Physician · Antioch, CA NPI 1972681039 Kenneth Grullon Obstetrics & Gynecology Physician · Antioch, CA NPI 1801974977 Katherine Tan Pediatrics Physician · Antioch, CA NPI 1477631554

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.