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

Mary Katherine Walker, M.P.T.

Q: What is the NPI number for Mary Walker?

The National Provider Identifier (NPI) for Mary Walker is 1003966417, a Type 1 (individual) record in the CMS NPPES registry.

Physical Therapist in Birmingham, AL · enumerated 2007 · practices at Alabama Orthopedic, Spine & Sports Medicine Associates PC.

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

National Provider Identifier

1003966417

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Registry record

Entity type Individual (Type 1)

Name Mary Katherine Walker

Credential M.P.T.

Sex Female

Practice address Birmingham, AL, 35235

Phone (205) 228-7600

Fax (205) 639-0990

Enumeration date Jan 11, 2007

Last updated in NPPES Jun 11, 2024

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

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PT8312 (GA) Primary

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 Mary Walker practice?

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

What is the NPI number for Mary Walker?

The National Provider Identifier (NPI) for Mary Walker is 1003966417, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-11.