NPI Portal NPI Lookup & Verification

Dr. William B Risley Jr., D.C.

Dr. William B Risley Jr. is a Chiropractor provider (Chiropractor) practicing in Phoenix, AZ, registered in the NPPES registry with NPI 1871549659 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1871549659
Entity type Individual (Type 1)
Name Dr. William B Risley Jr.
Credential D.C.
Sex Male
Practice address Phoenix, AZ, 85032
Phone 6024930004
Fax 6024930761
Enumeration date 2006-05-25
Last updated in NPPES 2017-08-22

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary 5688 AZ

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details
Provider: William Risley, D.C.
NPI: 1871549659
Taxonomy: 111N00000X (Chiropractor)
Address: Phoenix, AZ, 85032

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Verify this record

Cross-check NPI 1871549659 against the authoritative CMS record: view Dr. William B Risley Jr. on the official NPPES registry .

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 or validate an NPI number.

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

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2017-08-22.