NPI Portal NPI Lookup & Verification

Dr. David G Madison, D.C.

Dr. David G Madison is a Orthopedic Chiropractor provider (Chiropractor) practicing in Riverside, CA, registered in the NPPES registry with NPI 1508873803 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1508873803
Entity type Individual (Type 1)
Name Dr. David G Madison
Credential D.C.
Sex Male
Practice address Riverside, CA, 92506
Phone 9517847800
Fax 9517847803
Enumeration date 2006-08-01
Last updated in NPPES 2007-07-08

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111NX0800X Orthopedic Chiropractor Primary DC11474 CA

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

Copy-ready billing details
Provider: David Madison, D.C.
NPI: 1508873803
Taxonomy: 111NX0800X (Orthopedic Chiropractor)
Address: Riverside, CA, 92506

Verify this record

Cross-check NPI 1508873803 against the authoritative CMS record: view Dr. David G Madison 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 David Madison?
David Madison is registered in NPPES with the primary taxonomy of Orthopedic 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 2007-07-08.