Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Crowley, MD

Psychiatry Physician in Phoenix, AZ · enumerated 2008.

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

National Provider Identifier

1548432743

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Registry record

Entity type Individual (Type 1)

Name Dr. William Crowley

Credential MD

Sex Male

Practice address 14040 N Cave Creek Rd, Phoenix, AZ, 85022

Phone (160) 299-2933

Enumeration date Mar 27, 2008

Last updated in NPPES Mar 27, 2008

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 28321 (AZ) 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.

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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 Crowley?

William Crowley is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-27.