Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Kathryn Ann Walker, MD

Family Medicine Physician in Naperville, IL · enumerated 2008 · practices at Martin Avenue Pharmacy Inc.

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

National Provider Identifier

1235396201

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Registry record

Entity type Individual (Type 1)

Name Dr. Kathryn Ann Walker

Credential MD

Sex Female

Practice address 1247 Rickert Dr, Ste 201, Naperville, IL, 60540

Phone (630) 357-7979

Fax (630) 357-1047

Enumeration date May 19, 2008

Last updated in NPPES Jan 15, 2021

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 11014180A (IN) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036128253 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
11014180A	Other	IN	LICENSE #
9933040	Other	IL	BCBS

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 Kathryn Walker practice?

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

What is the NPI number for Kathryn Walker?

The National Provider Identifier (NPI) for Kathryn Walker is 1235396201, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-15.