Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margot R. Walker, APRN, WHNP-BC

Nurse Practitioner in Janesville, WI · enumerated 2007.

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

National Provider Identifier

1548312028

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Registry record

Entity type Individual (Type 1)

Name Margot R. Walker

Credential APRN, WHNP-BC

Sex Female

Practice address 1000 Mineral Point Ave, Janesville, WI, 53548

Phone (608) 756-6890

Fax (608) 756-6164

Enumeration date Jan 17, 2007

Last updated in NPPES Sep 29, 2022

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1847 (WI) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
43931700	Medicaid	WI	-
HARRIMAR	Other	WI	MERCY CARE INSURANCE
1548312028	Medicaid	WI	-

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

How do I verify Margot Walker's NPI record?

Cross-check NPI 1548312028 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1548312028 active?

Yes, as of the latest NPPES snapshot, NPI 1548312028 is active (record last updated 2022-09-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-29.