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Dr. William Gunning Ryan, OD

Optometrist in Tappahannock, VA · enumerated 2006 · practices at William G. Ryan, O.D., Ltd..

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

National Provider Identifier

1578598033

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Registry record

Entity type Individual (Type 1)
Name Dr. William Gunning Ryan
Credential OD
Sex Male
Practice address 611 Della Street, Tappahannock, VA, 22560
Phone (804) 443-3901
Fax (804) 443-6458
Enumeration date Jul 12, 2006
Last updated in NPPES Apr 16, 2012

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 0618000514 (VA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
009204032 Medicaid VA -
CM7564 Other VA MEDICARE RAILROAD

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 William Ryan practice?
The practice location on file with NPPES is in Tappahannock, VA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Ryan?
The National Provider Identifier (NPI) for William Ryan is 1578598033, 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 2012-04-16.