Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William George Hamilton, M.D.

Adult Reconstructive Orthopaedic Surgery Physician in Alexandria, VA · enumerated 2006.

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

National Provider Identifier

1811944143

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name William George Hamilton

Credential M.D.

Sex Male

Practice address 2501 Parkers Ln, Suite 200, Alexandria, VA, 22306

Phone (703) 892-6500

Fax (703) 799-5989

Enumeration date May 30, 2006

Last updated in NPPES May 7, 2008

Taxonomy & licenses

207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 0101232484 (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
526884	Other	-	NCPPO
148820100	Other	-	DEPT OF LABOR ID
25090065	Other	-	BLUE CROSS BLUE SHIELD ID
VA0007310	Other	-	CHAMPUS ID
277586	Other	-	ANTHEM ID
7572399	Other	-	AETNA PPO
2107167	Other	-	MAMSI ID
4540894	Other	-	CIGNA ID
3291800	Other	-	AETNA HMO

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

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.

What specialty is William Hamilton?

William Hamilton is registered in NPPES with the primary taxonomy of Adult Reconstructive Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-07.