Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William Dan Riley, D.C.

Chiropractor in Milan, MI · enumerated 2005 · practices at Sweeney Chiropractic Pllc.

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

National Provider Identifier

1295730034

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Registry record

Entity type Individual (Type 1)

Name Dr. William Dan Riley

Credential D.C.

Sex Male

Practice address Milan, MI, 48160

Phone (734) 439-2434

Enumeration date Jun 17, 2005

Last updated in NPPES Oct 24, 2011

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 2301003017 (MI) Primary

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

How do I verify William Riley's NPI record?

Cross-check NPI 1295730034 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1295730034 active?

Yes, as of the latest NPPES snapshot, NPI 1295730034 is active (record last updated 2011-10-24).

Other providers at this practice address

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Samantha Sweeney Chiropractor · Milan, MI NPI 1275284267 Sweeney Chiropractic Pllc Chiropractor · Milan, MI NPI 1518753888

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-24.