Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Walter Quirk, MD

Anesthesiology Physician in Fairbanks, AK · enumerated 2006.

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

National Provider Identifier

1306866686

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Registry record

Entity type Individual (Type 1)

Name William Walter Quirk

Credential MD

Sex Male

Practice address 1650 Cowles St, Fairbanks, AK, 99701

Phone (907) 458-5681

Enumeration date Jul 20, 2006

Last updated in NPPES Apr 10, 2020

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 4665 (AK) 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
193928800	Other	AK	US DEPT OF LABOR
MD7278	Medicaid	AK	-

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 Quirk?

William Quirk is registered in NPPES with the primary taxonomy of Anesthesiology 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-10.