Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas Garvin Kelsey, MD

Geriatric Medicine (Internal Medicine) Physician in San Jose, CA · enumerated 2006.

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

National Provider Identifier

1528022530

Verified

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Registry record

Entity type Individual (Type 1)

Name Thomas Garvin Kelsey

Credential MD

Sex Male

Practice address 2400 Moorpark Ave, Moorpark Internal Medicine Clinic, San Jose, CA, 95128

Phone (408) 885-4612

Enumeration date Apr 14, 2006

Last updated in NPPES Sep 13, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G38050 (CA) Secondary

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License G38050 (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
00G380500	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Thomas Kelsey?

Thomas Kelsey is registered in NPPES with the primary taxonomy of Geriatric Medicine (Internal Medicine) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Melissa Komrosky Family Nurse Practitioner · San Jose, CA NPI 1326030867 Yuk Fan Cheung Occupational Health Nurse Practitioner · San Jose, CA NPI 1962495754 County of Santa Clara Federally Qualified Health Center (FQHC) · San Jose, CA NPI 1336135912 Thomas Bush Rheumatology Physician · San Jose, CA NPI 1821061334 Steve Barncord Rehabilitation Psychologist · San Jose, CA NPI 1780657973 Martin Fenstershieb Pediatrics Physician · San Jose, CA NPI 1346203296 Constance Lo Internal Medicine Physician · San Jose, CA NPI 1033175997 Arnold Leff Family Medicine Physician · San Jose, CA NPI 1326004730

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-13.