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Roslyn Chosak M.D.,L.L.C.

Specialist in New Haven, CT · enumerated 2010 · authorized official Roslyn Chosak, Owner.

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

National Provider Identifier

1205137783

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Registry record

Entity type Organization (Type 2)
Legal business name Roslyn Chosak M.D.,L.L.C.
Practice address 2 Church St S, Suite 501, New Haven, CT, 06519
Phone (203) 562-5439
Fax (203) 624-5157
Enumeration date Nov 15, 2010
Last updated in NPPES Nov 15, 2010

Taxonomy & classification

174400000X Specialist Other Service Providers · License 022991 (CT) Primary

Authorized official

Name Roslyn Chosak
Title Owner
Phone (203) 562-5439

Other identifiers

Identifier Type State Issuer
1051396 Other CT AETNA
OQ2292 Other CT HEALTHNET
764-353 Other CT CONNECTICARE
010022991CT02 Other CT ANTHEM
NHP086 Other CT OXFORD

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 Roslyn Chosak M.D.,L.L.C.?
NPPES lists Roslyn Chosak (Owner) as the authorized official for this organization.
What is the NPI number for Roslyn Chosak M.D.,L.L.C.?
The NPI for Roslyn Chosak M.D.,L.L.C. is 1205137783, 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 2010-11-15.