Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ronald J. Rosenberg, M.D.

Nuclear Medicine Physician in Hartford, CT · enumerated 2005.

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

National Provider Identifier

1043296304

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Registry record

Entity type Individual (Type 1)

Name Dr. Ronald J. Rosenberg

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 19, 2005

Last updated in NPPES Jan 17, 2018

Taxonomy & licenses

207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License 246260 (MA) Secondary

207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License 020516 (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
A2516306	Other	CT	OXFORD
010020516CT01	Other	CT	ANTHEM BC/BS
001205162	Medicaid	CT	-

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 Ronald Rosenberg's NPI record?

Cross-check NPI 1043296304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1043296304 active?

Yes, as of the latest NPPES snapshot, NPI 1043296304 is active (record last updated 2018-01-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-17.