Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Thomas W Montag, MD

Gynecologic Oncology Physician in Chesapeake, VA · enumerated 2005.

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

National Provider Identifier

1306848270

Verified

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Registry record

Entity type Individual (Type 1)

Name Thomas W Montag

Credential MD

Sex Male

Practice address Chesapeake, VA, 23320

Phone (757) 436-9898

Fax (757) 436-5455

Enumeration date Aug 11, 2005

Last updated in NPPES Oct 16, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207VX0201X Gynecologic Oncology Physician Allopathic & Osteopathic Physicians · License 0101059160 (VA) 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
1075087	Other	-	MAMSI (GYN)
00X210T01	Other	VA	MEDICARE
1231740	Other	-	FIRST HEALTH
21941	Other	-	SENTARA
3600719	Other	-	UNITED HEALTHCARE
463796	Other	-	ANTHEM
1175087	Other	-	MAMSI (ONC)
2998639	Other	-	CIGNA
4232842	Other	-	AETNA
621780-0	Medicaid	VA	-
P00065884	Other	-	RAILROAD 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.

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Frequently asked questions

What is the NPI number for Thomas Montag?

The National Provider Identifier (NPI) for Thomas Montag is 1306848270, a Type 1 (individual) record in the CMS NPPES registry.

Where does Thomas Montag practice?

The practice location on file with NPPES is in Chesapeake, VA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-16.