Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Mcclintock, MD

Psychiatry Physician in Fairfax, VA · enumerated 2006.

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

National Provider Identifier

1518044858

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Registry record

Entity type Individual (Type 1)

Name William Mcclintock

Credential MD

Sex Male

Practice address 3023 Hamaker Ct Ste 300, Fairfax, VA, 22031

Phone (703) 876-2788

Enumeration date Nov 1, 2006

Last updated in NPPES Mar 31, 2025

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License MD20189 (DC) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 0101043365 (VA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for William Mcclintock?

The National Provider Identifier (NPI) for William Mcclintock is 1518044858, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Mcclintock practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-31.