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

Dr. David Ryan Walker, D.C., MSACN

Q: What is the NPI number for David Walker?

The National Provider Identifier (NPI) for David Walker is 1235727447, a Type 1 (individual) record in the CMS NPPES registry.

Chiropractor in Bayport, NY · enumerated 2021.

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

National Provider Identifier

1235727447

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Registry record

Entity type Individual (Type 1)

Name Dr. David Ryan Walker

Credential D.C., MSACN

Sex Male

Practice address Bayport, NY, 11705

Phone (631) 365-2297

Enumeration date Jan 4, 2021

Last updated in NPPES Jan 4, 2021

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 013408 (NY) 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 David Walker practice?

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

What is the NPI number for David Walker?

The National Provider Identifier (NPI) for David Walker is 1235727447, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-04.