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

Dr. Linn Scott Mcdonald, D.C.

Independent Medical Examiner Chiropractor in Walnut, CA · enumerated 2005 · practices at Linn S Mcdonald Dc Inc.

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

National Provider Identifier

1902889231

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Registry record

Entity type Individual (Type 1)

Name Dr. Linn Scott Mcdonald

Credential D.C.

Sex Male

Practice address Walnut, CA, 91789

Phone (909) 594-5243

Fax (909) 594-5374

Enumeration date Nov 21, 2005

Last updated in NPPES Dec 22, 2021

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

Taxonomy & licenses

111NI0013X Independent Medical Examiner Chiropractor Chiropractic Providers · License DC14439 (CA) Primary

111N00000X Chiropractor Chiropractic Providers · License DC14439 (CA) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Linn Mcdonald practice?

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

What is the NPI number for Linn Mcdonald?

The National Provider Identifier (NPI) for Linn Mcdonald is 1902889231, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

William Ramriez Chiropractor · Walnut, CA NPI 1578780128 Linn S Mcdonald Dc Inc Chiropractor · Walnut, CA NPI 1609536812

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-22.