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Rena Ferguson, MD, PC

Psychiatry Physician in Setauket, NY · enumerated 2008 · authorized official George Gmytrasiewicz, Consultant.

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

National Provider Identifier

1477703924

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Registry record

Entity type Organization (Type 2)
Legal business name Rena Ferguson, MD, PC
Practice address 128 Old Town Rd, Suite C & D, Setauket, NY, 11733
Phone (631) 689-5390
Fax (631) 689-5395
Enumeration date Sep 21, 2008
Last updated in NPPES Oct 14, 2008

Taxonomy & classification

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 230330 (NY) Primary

Authorized official

Name George Gmytrasiewicz
Title Consultant
Phone (631) 689-5390

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

What is the NPI number for Rena Ferguson, MD, PC?
The NPI for Rena Ferguson, MD, PC is 1477703924, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Rena Ferguson, MD, PC?
NPPES lists George Gmytrasiewicz (Consultant) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-14.