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Dr. Michael Thomas Ryan, D.O.

Dermatopathology (Pathology) Physician in Norfolk, VA · enumerated 2006 · practices at Dominion Pathology Laboratories PC.

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

National Provider Identifier

1598739583

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Registry record

Entity type Individual (Type 1)
Name Dr. Michael Thomas Ryan
Credential D.O.
Sex Male
Practice address 733 Boush St, Suite 200, Norfolk, VA, 23510
Phone (757) 664-7901
Enumeration date Feb 15, 2006
Last updated in NPPES Feb 11, 2011

Taxonomy & licenses

207ZD0900X Dermatopathology (Pathology) Physician Allopathic & Osteopathic Physicians · License 1499898 (OR) Primary
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

Is NPI 1598739583 active?
Yes — as of the latest NPPES snapshot, NPI 1598739583 is active (record last updated 2011-02-11).
How do I verify Michael Ryan's NPI record?
Cross-check NPI 1598739583 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-11.