NPPES file of Aug 9, 2026

Jennifer Gruber, APNP

Nurse Practitioner · Fort Atkinson, WI

Jennifer Gruber, APNP is a nurse practitioner with a practice address in Fort Atkinson, Wisconsin, and NPI 1134515703, issued on Apr 10, 2015. Check the license (Wisconsin 6307, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134515703
Name
Jennifer Gruber
Credential
APNP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
6307 WI
Self-reported in NPPES; status is on the state search
Practice location
650 Mcmillen St, Fort Atkinson, WI 53538
Phone
(920) 563-8900
Enumerated
Apr 10, 2015
Record last updated
Oct 7, 2022
Medicaid ID
1134515703 WI
Medicare enrollment
Enrolled (PECOS I20250107003392); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 650 Mcmillen St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nancy Aguirre, M.D.Obstetrics & Gynecology Physician1649235920
  2. Christine Chuppa, M.D.Obstetrics & Gynecology Physician1245257997
  3. Joyce Dedrick, APNPWomen's Health Nurse Practitioner1972520625
  4. Molly Larson, M.D.Obstetrics & Gynecology Physician1972898096
  5. Elizabeth Lynk, MDObstetrics & Gynecology Physician1124383690
  6. Julie Mokhtar, D.O.Obstetrics & Gynecology Physician1942221437

Verify Jennifer Gruber in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 6307    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average nurse practitioner in 2024

29 Medicare Part D claims for 16 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.

  1. Jennifer Gruber29
  2. Specialty average1,109

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

  1. HH Physicians NetworkHuntsville, AL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

8 nurse practitioner records list a practice address in Fort Atkinson

They are 8 of the 361 NPPES records with a practice address in Fort Atkinson, and 3,995 nurse practitioner records in Wisconsin.

All 8 in Fort Atkinson → All 3,995 in Wisconsin → Every provider in Fort Atkinson →

Other nurse practitioner records in Wisconsin

  1. Caroline Aaberg, APNPMadison, WI1881384394
  2. Joyce Abbott, APNPOshkosh, WI1003824665
  3. Mohamed Abdelazim, APNPAppleton, WI1760266696
  4. Jacklyn Abel, AGACNP-BCMauston, WI1104631506
  5. Henrietta Abili, APNPGermantown, WI1174859524
  6. Jade Abts, NPGreen Bay, WI1992293708
  7. Karalyn Adam, DNP, RNMarshfield, WI1780933051
  8. Carol Adamczyk, MSNWauwatosa, WI1457502395
  9. Amanda Adams, NPMadison, WI1023366598
  10. Bernadette Adams, FNPWestby, WI1427047620

Common questions

What is Jennifer Gruber, APNP's NPI number?

Jennifer Gruber, APNP's National Provider Identifier (NPI) is 1134515703, issued on Apr 10, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer Gruber, APNP located?

The NPPES record lists a practice address at 650 Mcmillen St, Fort Atkinson, WI, 53538. Phone: (920) 563-8900. Providers update this record themselves, so call before visiting.

How can I verify Jennifer Gruber, APNP's license?

NPPES lists Wisconsin license number 6307, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Jennifer Gruber, APNP prescribe under Medicare Part D?

In 2024, Jennifer Gruber, APNP had 29 Medicare Part D claims for 16 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.