Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Rheumatology Associates PC

Rheumatology Physician in Springfield, MA · enumerated 2005 · authorized official Martin Poppo, President.

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

National Provider Identifier

1902896905

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Rheumatology Associates PC

Practice address 3377 Main St, Springfield, MA, 01107

Phone (413) 734-5661

Fax (413) 734-8947

Enumeration date Oct 21, 2005

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Martin Poppo

Title President

Phone (413) 734-5661

Other identifiers

Identifier	Type	State	Issuer
9712178	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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Rheumatology Associates PC located?

The practice location on file with NPPES is in Springfield, MA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.