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Dr. Corey Douglas Ryan, OD

Optometrist in Watertown, NY · enumerated 2025 · practices at Northern New York Gastroenterology.

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

National Provider Identifier

1699669291

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Registry record

Entity type Individual (Type 1)
Name Dr. Corey Douglas Ryan
Credential OD
Sex Male
Practice address 53 Public Sq, Watertown, NY, 13601
Phone (315) 681-6379
Enumeration date Jun 6, 2025
Last updated in NPPES Mar 11, 2026

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License ORT011296 (NY) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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

Where does Corey Ryan practice?
The practice location on file with NPPES is in Watertown, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Corey Ryan?
The National Provider Identifier (NPI) for Corey Ryan is 1699669291, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-11.