Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Martin Walder, D.C.

Chiropractor in Amherst, MA · enumerated 2006.

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

National Provider Identifier

1629137237

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Registry record

Entity type Individual (Type 1)

Name Dr. Martin Walder

Credential D.C.

Sex Male

Practice address 228 Triangle St Ste 4, Amherst, MA, 01002

Phone (413) 549-1500

Enumeration date Dec 8, 2006

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 2034 (MA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Martin Walder practice?

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

What is the NPI number for Martin Walder?

The National Provider Identifier (NPI) for Martin Walder is 1629137237, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.