Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen M. Fleet, M.D.

Cardiovascular Disease Physician in Greenfield, MA · enumerated 2006.

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

National Provider Identifier

1588764948

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Stephen M. Fleet

Credential M.D.

Sex Male

Practice address 164 High St, Greenfield, MA, 01301

Phone (413) 794-2273

Fax (413) 773-2841

Enumeration date Sep 25, 2006

Last updated in NPPES Jan 18, 2023

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 20714 (NH) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 47690 (MA) 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
110052260A	Medicaid	MA	-
3102424	Medicaid	MA	-

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 Stephen Fleet?

The National Provider Identifier (NPI) for Stephen Fleet is 1588764948, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Fleet practice?

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

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-18.