Melissa A. Walker, NP
Nurse Practitioner · Waukesha, WI
Melissa A. Walker, NP is a nurse practitioner with a practice address in Waukesha, Wisconsin, and NPI 1811182074, issued on Sep 11, 2007. Check the license (Wisconsin 504-033, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Melissa A. Walker
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 504-033 WI
Self-reported in NPPES; status is on the state search - Practice location
- 725 American Ave, Waukesha, WI 53188
- Phone
- (262) 928-2570
- Enumerated
- Sep 11, 2007
- Record last updated
- Oct 26, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (262) 928-5194
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,995 in Wisconsin → Look up another NPI →
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Verify Melissa A. Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 504-033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average nurse practitioner in 2024
43 Medicare Part D claims for 24 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Melissa A. Walker among 3,995 nurse practitioner records in Wisconsin
Melissa A. Walker, NP is one of 3,995 nurse practitioner records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 18% of them.
- NPI issued2007 · 18% of these records are older, 77% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2011 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
60 nurse practitioner records list a practice address in Waukesha
They are 60 of the 2,814 NPPES records with a practice address in Waukesha, and 3,995 nurse practitioner records in Wisconsin.
All 3,995 in Wisconsin → Every provider in Waukesha → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Jean Bagin, NPWaukesha, WI 531881710947064
- Ann Davis, APNPWaukesha, WI 531881942232764
- Mary Fourness, A.P.N.P.Waukesha, WI 531881144364001
- Amy Hewuse, NPWaukesha, WI 531881194952036
- Tammy Johnsen, NPWaukesha, WI 531881073713913
- Debra Ketterhagen, APNPWaukesha, WI 531881427064948
- Diane Keyes, APNP, RNWaukesha, WI 531881437115847
- Holly Reich, APNPWaukesha, WI 531881306922919
Common questions
What is Melissa A. Walker, NP's NPI number?
Melissa A. Walker, NP's National Provider Identifier (NPI) is 1811182074, issued on Sep 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Melissa A. Walker, NP located?
The NPPES record lists a practice address at 725 American Ave, Waukesha, WI, 53188. Phone: (262) 928-2570. Providers update this record themselves, so call before visiting.
How can I verify Melissa A. Walker, NP's license?
NPPES lists Wisconsin license number 504-033, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Melissa A. Walker, NP prescribe under Medicare Part D?
In 2024, Melissa A. Walker, NP had 43 Medicare Part D claims for 24 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.