Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael J. Katin, MD

Radiation Oncology Physician in Woonsocket, RI · enumerated 2005.

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

National Provider Identifier

1811994999

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Registry record

Entity type Individual (Type 1)

Name Michael J. Katin

Credential MD

Sex Male

Practice address 115 Cass Ave Unit 1, Woonsocket, RI, 02895

Phone (401) 356-1701

Fax (401) 356-4537

Enumeration date Jul 5, 2005

Last updated in NPPES Sep 15, 2025

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License ME0026427 (FL) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License MD11285 (RI) Primary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License G26661 (CA) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 4877 (NV) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 2001-01567 (NC) Secondary

2085R0203X Therapeutic Radiology Physician Allopathic & Osteopathic Physicians · License ME26427 (FL) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 127667-1 (NY) Secondary

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
4129712	Other	FL	AETNA PROVIDER NUMBER
592485899	Other	FL	METCARE VENDOR ID #
00787	Other	FL	UNV. HLTHCR. PROVIDER #
01738807	Medicaid	NY	-
205786	Other	FL	AVMED PROVIDER NUMBER
MB505	Other	FL	MEDICARE
MB506	Other	FL	MEDICARE
24-05164	Other	FL	UTD. HLTHCR. PROVIDER #
0916153-016	Other	FL	CIGNA PROVIDER NUMBER
MD11285	Other	RI	LICENSE
00G26610	Medicaid	CA	-
065594500	Medicaid	FL	-
76715	Other	FL	OP. ENG. LOC. 825 PROV. #
985684	Other	FL	WELLCARE
2019966	Medicaid	NV	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Michael Katin practice?

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

What is the NPI number for Michael Katin?

The National Provider Identifier (NPI) for Michael Katin is 1811994999, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-15.