NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William J. Quinlan, MD

Sports Medicine (Orthopaedic Surgery) Physician in Tucson, AZ · enumerated 2005 · practices at Southern Arizona Center for Minimally Invasive Surgery, PC.

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

National Provider Identifier

1578564175

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Registry record

Entity type Individual (Type 1)
Name William J. Quinlan
Credential MD
Sex Male
Practice address 6320 N La Cholla Blvd, 200, Tucson, AZ, 85741
Fax (520) 784-6249
Enumeration date Aug 3, 2005
Last updated in NPPES Feb 10, 2014

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 12268 (AZ) Secondary
207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 12268 (AZ) Primary
207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 12268 (AZ) Secondary
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
243907 Medicaid AZ -

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.

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Frequently asked questions

Is NPI 1578564175 active?
Yes, as of the latest NPPES snapshot, NPI 1578564175 is active (record last updated 2014-02-10).
How do I verify William Quinlan's NPI record?
Cross-check NPI 1578564175 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-10.