Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Rheumatology Associates of Long Island, LLP

Specialist in Melville, NY · enumerated 2008 · authorized official Lynette Byrnes, Business Administrator.

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

National Provider Identifier

1457520140

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Registry record

Entity type Organization (Type 2)

Legal business name Rheumatology Associates of Long Island, LLP

Practice address 1895 Walt Whitman Rd, Melville, NY, 11747

Phone (631) 249-9525

Fax (631) 420-1526

Enumeration date Feb 27, 2008

Last updated in NPPES Feb 27, 2008

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Lynette Byrnes

Title Business Administrator

Phone (631) 360-3796

Other identifiers

Identifier	Type	State	Issuer
02501664	Medicaid	NY	-

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 is Rheumatology Associates of Long Island, LLP located?

The practice location on file with NPPES is in Melville, NY.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-02-27. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-27.