Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael R Clain, MD

Orthopaedic Surgery Physician in Greenwich, CT · enumerated 2006.

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

National Provider Identifier

1760453336

Verified

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Registry record

Entity type Individual (Type 1)

Name Michael R Clain

Credential MD

Sex Male

Practice address 6 Greenwich Office Park, Greenwich, CT, 06831

Phone (203) 869-1145

Fax (203) 618-1721

Enumeration date Jan 31, 2006

Last updated in NPPES Mar 1, 2017

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 031541 (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
200025716	Other	CT	RAILROAD MEDICARE

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

What is the NPI number for Michael Clain?

The National Provider Identifier (NPI) for Michael Clain is 1760453336, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Clain practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-01.