Margaret Aikins Keup, APNP
Acute Care Nurse Practitioner · Grafton, WI
Margaret Aikins Keup, APNP is an acute care nurse practitioner with a practice address in Grafton, Wisconsin, and NPI 1023417169, issued on Aug 14, 2014. Check the license (Wisconsin 5585, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Aikins Keup
- Credential
- APNP
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License numbers
- 5585 WI
5855 WI
Self-reported in NPPES; status is on the state search - Practice location
- 975 Port Washington RD, Grafton, WI 53024
- Phone
- (262) 329-1000
- Enumerated
- Aug 14, 2014
- Record last updated
- Mar 3, 2023
- Medicare enrollment
- Enrolled (PECOS I20140930002103); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 229 in Wisconsin → Look up another NPI →
Also registered at 975 Port Washington RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margaret Aikins Keup in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 5585Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024
141 Medicare Part D claims for 33 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Pantoprazole Sodium11 claims
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.
Bills Medicare through one group practice
- Midwest Critical Care SCMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Aikins Keup among 229 acute care nurse practitioner records in Wisconsin
Margaret Aikins Keup, APNP is one of 229 acute care nurse practitioner records with a practice address in Wisconsin. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 26% of them.
- NPI issued2014 · 26% of these records are older, 70% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2014 · median 2020 among the 178 with a school on file
- Record last updated2023 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Acute Care Nurse Practitioner providers in Wisconsin
There are 229 acute care nurse practitioner records in Wisconsin.
All 229 in Wisconsin → Every provider in Grafton → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Judith Hummel, APNPBrookfield, WI 530451073141495
- Debra Casper, NPMenomonee Falls, WI 530511003870064
- Daniel Flanagan, ACNPC-BCMenomonee Falls, WI 530511023903820
- Morgan MastrostefanoMenomonee Falls, WI 530511437089364
- Leanne Nebel, APNPMenomonee Falls, WI 530511487100848
- Christine Butzine, AGACNP-BCSummit, WI 530661528485315
- Evgeniya Khen, NPOconomowoc, WI 530661023790664
- Melissa Rodriguez, ACNP-BCSheboygan, WI 530811255569489
Common questions
What is Margaret Aikins Keup, APNP's NPI number?
Margaret Aikins Keup, APNP's National Provider Identifier (NPI) is 1023417169, issued on Aug 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Aikins Keup, APNP located?
The NPPES record lists a practice address at 975 Port Washington RD, Grafton, WI, 53024. Phone: (262) 329-1000. Providers update this record themselves, so call before visiting.
How can I verify Margaret Aikins Keup, APNP's license?
NPPES lists Wisconsin license number 5585, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Margaret Aikins Keup, APNP prescribe under Medicare Part D?
In 2024, Margaret Aikins Keup, APNP had 141 Medicare Part D claims for 33 beneficiaries; the average among acute care nurse practitioner prescribers was 594. 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.