Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Richard A Brown, M.D.

Rheumatology Physician in Greenfield, MA · enumerated 2005.

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

National Provider Identifier

1689657231

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Registry record

Entity type Individual (Type 1)

Name Dr. Richard A Brown

Credential M.D.

Sex Male

Practice address 329 Conway St, Greenfield, MA, 01301

Phone (413) 774-6301

Fax (866) 644-0871

Enumeration date Nov 28, 2005

Last updated in NPPES Mar 21, 2024

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 48143 (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
3138411	Medicaid	MA	-
5413573	Other	MA	AETNA USHEALTHCARE
20870	Other	MA	HEALTH NEW ENGLAND
3265718004	Other	MA	CIGNA HEALTH PLAN
48143	Other	MA	TUFTS HEALTH PLAN
66769	Other	MA	HARVARD PILGRIM HEALTHCAR
J16055	Other	MA	BLUE CROSS BLUE SHIELD

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 does Richard Brown practice?

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

What is the NPI number for Richard Brown?

The National Provider Identifier (NPI) for Richard Brown is 1689657231, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-21.