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

Dr. Charles Robert Rethy, MD

Internal Medicine Physician in Hamden, CT · enumerated 2005 · practices at Cardiology Consultants, P.C..

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

National Provider Identifier

1982602884

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles Robert Rethy

Credential MD

Sex Male

Practice address Hamden, CT, 06518

Phone (203) 248-4331

Fax (203) 248-7118

Enumeration date Jul 13, 2005

Last updated in NPPES Jan 30, 2013

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 019353 (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
0Q2054	Other	CT	HEALTHNET
110167932	Other	CT	RAILROAD MEDICARE
193530	Other	CT	CONNECTICARE
NHP062	Other	CT	OXFORD
010019353CT01	Other	CT	BLUE CROSS BLUE SHIELD
2047262	Other	CT	AETNA

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 specialty is Charles Rethy?

Charles Rethy is registered in NPPES with the primary taxonomy of 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-30.