NPI Portal NPI Lookup & Verification

Dr. William Andrew Ramriez, D.C.

Dr. William Andrew Ramriez is a Chiropractor provider (Chiropractor) practicing in Walnut, CA, registered in the NPPES registry with NPI 1578780128 since 2007. The credential DC stands for Doctor of Chiropractic. Practices at Linn S Mcdonald Dc Inc (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1578780128
Entity type Individual (Type 1)
Name Dr. William Andrew Ramriez
Credential D.C.
Sex Male
Practice address Walnut, CA, 91789
Phone 9094681775
Fax 9094681795
Enumeration date 2007-04-18
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
111N00000X Chiropractor Primary DC 23460 CA

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

Copy-ready billing details
Provider: William Ramriez, D.C.
NPI: 1578780128
Taxonomy: 111N00000X (Chiropractor)
Address: Walnut, CA, 91789

Other providers at this practice address

NPI Name Type Specialty Location
1902889231 Linn Mcdonald Individual Independent Medical Examiner Chiropractor Walnut, CA
1609536812 Linn S Mcdonald Dc Inc Organization Chiropractor Walnut, CA

Verify this record

Cross-check NPI 1578780128 against the authoritative CMS record: view Dr. William Andrew Ramriez 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

What specialty is William Ramriez?
William Ramriez 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.
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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.