Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen Dennis Ryan, MD, MPH

Geriatric Medicine (Internal Medicine) Physician in Rochester, NY · enumerated 2005.

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

National Provider Identifier

1447252796

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Dennis Ryan

Credential MD, MPH

Sex Male

Practice address 1415 Portland Ave, Rochester, NY, 14621

Phone (585) 922-2800

Fax (585) 922-2864

Enumeration date Jun 1, 2005

Last updated in NPPES Apr 15, 2019

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 206383 (NY) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 206383 (NY) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
206383	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

How do I verify Stephen Ryan's NPI record?

Cross-check NPI 1447252796 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1447252796 active?

Yes, as of the latest NPPES snapshot, NPI 1447252796 is active (record last updated 2019-04-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-15.