Ms. Debra Jean Walker, NP
Ms. Debra Jean Walker is a Nurse Practitioner provider (Nurse Practitioner) practicing in Milwaukee, WI, registered in the NPPES registry with NPI 1639199813 since 2006. The credential NP stands for Nurse Practitioner.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1639199813 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Ms. Debra Jean Walker |
| Credential | NP |
| Sex | Female |
| Practice address | 5000 W NATIONAL AVE, Milwaukee, WI, 53295 |
| Phone | 4143842000 |
| Enumeration date | 2006-07-20 |
| Last updated in NPPES | 2010-02-03 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 363L00000X | Nurse Practitioner | Primary | 1771033 | WI |
NP — Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential
Copy-ready billing details
Provider: Debra Walker, NP NPI: 1639199813 Taxonomy: 363L00000X (Nurse Practitioner) Address: 5000 W NATIONAL AVE, Milwaukee, WI, 53295
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1790787943 | Laura Tobon | Individual | Registered Nurse | Milwaukee, WI |
| 1760486625 | Julie Jensen | Individual | Adult Health Nurse Practitioner | Milwaukee, WI |
| 1265436737 | Mary Karfonta | Individual | Family Nurse Practitioner | Milwaukee, WI |
| 1992700942 | Arlene Kasten | Individual | Ambulatory Care Registered Nurse | Milwaukee, WI |
| 1164427779 | Laurel Breit | Individual | Family Nurse Practitioner | Milwaukee, WI |
| 1356347686 | Wendy Janssen | Individual | Adult Health Nurse Practitioner | Milwaukee, WI |
| 1982601019 | Timothy Wittwer | Individual | Family Nurse Practitioner | Milwaukee, WI |
| 1679571749 | Julie Putman | Individual | Nurse Practitioner | Milwaukee, WI |
Verify this record
Cross-check NPI 1639199813 against the authoritative CMS record: view Ms. Debra Jean Walker on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-02-03.