Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas M. Walsh, M.D.

Family Medicine Physician in Queenstown, MD · enumerated 2005.

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

National Provider Identifier

1659363257

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas M. Walsh

Credential M.D.

Sex Male

Practice address 113 River Run, Queenstown, MD, 21658

Phone (410) 353-4501

Enumeration date Aug 19, 2005

Last updated in NPPES Apr 17, 2019

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0023867 (MD) 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
0100062	Other	MD	AETNA CAPITATED BROADNECK
354504-05	Other	MD	CAREFIRST MD RENDERING KI
7605-0015	Other	MD	CAREFIRST BLUECHOICE
235423	Other	MD	MAMSI SPECIALIST BN
8114676	Other	MD	MAMSI PRIMARY CARE KI
P11963	Other	MD	CAREFIRST MPOS
0122983	Other	MD	CIGNA PIN
4088401	Other	MD	AETNA FEE FOR SERVICE
0100067	Other	MD	AETNA CAPITATED KENT IS.
2114676	Other	MD	MAMSI SPECIALIST KI
835423	Other	MD	MAMSI PRIMARY CARE BN
354504-01	Other	MD	CAREFIRST MD RENDERING BN
028700	Other	MD	JHHC PROVIDER NUMBER
769241200	Medicaid	MD	-
80083146	Other	MD	RR MEDICARE

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

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.

What specialty is Thomas Walsh?

Thomas Walsh is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-17.