NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Arizona Oncology

Physician Assistant in Tucson, AZ · enumerated 2006 · authorized official William Resseguie, PA.

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

National Provider Identifier

1154485530

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Arizona Oncology
Practice address 1760 E River Rd, Suite 350, Tucson, AZ, 85718
Phone (520) 519-7720
Fax (520) 519-5175
Enumeration date Dec 20, 2006
Last updated in NPPES Dec 3, 2007

Taxonomy & classification

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 3579 (AZ) Primary

Authorized official

Name William Resseguie
Title PA
Phone (520) 519-7720

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

Where is Arizona Oncology located?
The practice location on file with NPPES is in Tucson, AZ.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-12-03. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-03.