Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Douglas D. Montgomery, M.D.

Diagnostic Radiology Physician in Hartford, CT · enumerated 2005.

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

National Provider Identifier

1477539484

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Registry record

Entity type Individual (Type 1)

Name Douglas D. Montgomery

Credential M.D.

Sex Male

Practice address 85 Seymour St, Suite 200, Hartford, CT, 06106

Phone (860) 289-3375

Fax (860) 560-2849

Enumeration date Dec 21, 2005

Last updated in NPPES Jun 12, 2018

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 041348 (CT) 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
001413484	Medicaid	CT	-
010041348CT01	Other	CT	ANTHEM BC/BS
A2516306	Other	CT	OXFORD

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 Douglas Montgomery's NPI record?

Cross-check NPI 1477539484 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477539484 active?

Yes, as of the latest NPPES snapshot, NPI 1477539484 is active (record last updated 2018-06-12).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-12.