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Rheumatology Associates of L.I., LLP

Specialist in Smithtown, NY · enumerated 2005 · authorized official Lynette Byrnes, Business Administrator.

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

National Provider Identifier

1689660573

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Registry record

Entity type Organization (Type 2)
Legal business name Rheumatology Associates of L.I., LLP
Practice address 315 Middle Country Rd, Smithtown, NY, 11787
Phone (631) 360-7778
Fax (631) 979-1609
Enumeration date Sep 26, 2005
Last updated in NPPES Aug 22, 2020

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.

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Frequently asked questions

Who is the authorized official for Rheumatology Associates of L.I., LLP?
NPPES lists Lynette Byrnes (Business Administrator) as the authorized official for this organization.
What is the NPI number for Rheumatology Associates of L.I., LLP?
The NPI for Rheumatology Associates of L.I., LLP is 1689660573, a Type 2 (organization) record in the CMS NPPES registry.

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