Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Patrick O'Grady, M.D.

Diagnostic Radiology Physician in Alexandria, VA · enumerated 2005.

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

National Provider Identifier

1417931650

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Registry record

Entity type Individual (Type 1)

Name William Patrick O'Grady

Credential M.D.

Sex Male

Practice address 3720 Seminary Rd, Alexandria, VA, 22304

Phone (703) 751-7790

Fax (703) 823-2862

Enumeration date Dec 1, 2005

Last updated in NPPES Dec 2, 2014

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License O101042601 (VA) Primary

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
168051000	Medicaid	MD	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is William O'Grady?

William O'Grady is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-02.