Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nancy Riley-Williams, FNP-BC

Family Nurse Practitioner in Green Valley, AZ · enumerated 2015.

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

National Provider Identifier

1790140945

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Nancy Riley-Williams

Credential FNP-BC

Sex Female

Practice address 1260 S Campbell Ave Bldg 2, Green Valley, AZ, 85614

Phone (520) 407-5600

Fax (520) 625-8504

Enumeration date Dec 15, 2015

Last updated in NPPES Jan 31, 2020

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP8348 (AZ) Primary

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 does Nancy Riley-Williams practice?

The practice location on file with NPPES is in Green Valley, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Nancy Riley-Williams?

The National Provider Identifier (NPI) for Nancy Riley-Williams is 1790140945, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-31.