Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr. John Katsetos LLC

Internal Medicine Physician in Milford, CT · enumerated 2011 · authorized official John Katsetos, Physician.

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

National Provider Identifier

1043516446

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Registry record

Entity type Organization (Type 2)

Legal business name Dr. John Katsetos LLC

Practice address 353 Bridgeport Avenue, Milford, CT, 06460

Phone (203) 877-1212

Fax (203) 877-1211

Enumeration date Feb 2, 2011

Last updated in NPPES Feb 2, 2011

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 032814 (CT) Primary

Authorized official

Name John Katsetos

Title Physician

Phone (203) 877-1212

Other identifiers

Identifier	Type	State	Issuer
01328146	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

Where is Dr. John Katsetos LLC located?

The practice location on file with NPPES is in Milford, CT.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-02-02. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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John Katsetos Internal Medicine Physician · Milford, CT NPI 1831121979

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-02.