Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William H Hall, M.D.

Urology Physician in Phoenix, AZ · enumerated 2007.

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

National Provider Identifier

1164557047

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Registry record

Entity type Individual (Type 1)

Name Dr. William H Hall

Credential M.D.

Sex Male

Practice address 1441 N 12th St Fl 3, Phoenix, AZ, 85006

Phone (602) 521-5770

Fax (602) 521-5771

Enumeration date Feb 22, 2007

Last updated in NPPES Nov 3, 2016

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License M-4497 (ID) 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 Hall?

William Hall is registered in NPPES with the primary taxonomy of Urology 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 2016-11-03.