Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Kathryn L. Hammer, PT
Physical Therapist in Mukwonago, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023198991
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Registry record
Entity type Individual (Type 1)
Name Ms. Kathryn L. Hammer
Credential PT
Sex Female
Practice address 955 Main St Ste Cd, Mukwonago, WI, 53149
Phone (262) 662-9760
Fax (262) 662-9761
Enumeration date Oct 16, 2006
Last updated in NPPES Nov 27, 2024
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5459-024 (WI) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation.
About the PT credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1023198991 | 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.
Frequently asked questions
Is NPI 1023198991 active?
Yes, as of the latest NPPES snapshot, NPI 1023198991 is active (record last updated 2024-11-27).
How do I verify Kathryn Hammer's NPI record?
Cross-check NPI 1023198991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-27.