Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William A Houck III, M.D.

Hematology & Oncology Physician in Winchester, VA · enumerated 2006.

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

National Provider Identifier

1568406288

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Registry record

Entity type Individual (Type 1)

Name Dr. William A Houck III

Credential M.D.

Sex Male

Practice address 400 Campus Blvd Ste 100, Winchester, VA, 22601

Phone (540) 662-1108

Enumeration date Jun 15, 2006

Last updated in NPPES May 24, 2023

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 0101236276 (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
010093147	Medicaid	VA	-
143911	Other	VA	BLUE CROSS BLUE SHIELD
45-4759270	Other	VA	TAX ID

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 is the NPI number for William Houck?

The National Provider Identifier (NPI) for William Houck is 1568406288, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Houck practice?

The practice location on file with NPPES is in Winchester, VA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-24.