NPPES file of Aug 9, 2026

Jennifer I. Giesige, D.O

Psychiatry Physician · Fond Du Lac, WI

Jennifer I. Giesige, D.O is a psychiatry physician with a practice address in Fond Du Lac, Wisconsin, and NPI 1235450461, issued on Jun 22, 2010. Check the license (Wisconsin 66482-21, as entered in NPPES) on the Wisconsin Medical Examining Board; 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
1235450461
Name
Jennifer I. Giesige
Credential
D.O
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
66482-21 WI
PG151470 OR
Self-reported in NPPES; status is on the state search
Practice location
430 E Division St, Fond Du Lac, WI 54935
Phone
(920) 929-2300
Enumerated
Jun 22, 2010
Record last updated
Oct 20, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170228001937); accepts Medicare assignment
Medical or professional school
Lake Erie College Of Osteopathic Medicine, Erie, 2010
Telehealth
Offers telehealth (CMS)
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 430 E Division St

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

  1. Kabir Ahmed, M.D.Sleep Medicine (Internal Medicine) Physician1528325891
  2. Desirae AlsumNurse Practitioner1912748401
  3. Jan Andrews, RNMedical-Surgical Registered Nurse1972594679
  4. Cheryl Apel, RNRegistered Nurse1750181681
  5. Mary Arrigoni, CRNACertified Registered Nurse Anesthetist1033106125
  6. Andrea Aul, MDPediatrics Physician1447888110

Verify Jennifer I. Giesige in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 66482-21
    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
Open the Wisconsin license search

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2.1 times the Medicare Part D claims of the average psychiatry physician in 2024

2,127 Medicare Part D claims for 113 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.

  1. Jennifer Giesige2,127
  2. Specialty average1,000

Most prescribed

  1. Trazodone Hcl152 claims
  2. Clonazepam112 claims
  3. Bupropion Xl88 claims
  4. Buspirone Hcl85 claims
  5. Aripiprazole78 claims
  6. Lorazepam75 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

  1. Agnesian Healthcare IncWaupun, WI

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

Jennifer I. Giesige among 929 psychiatry physician records in Wisconsin

Jennifer I. Giesige, D.O is one of 929 psychiatry physician records with a practice address in Wisconsin. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.

  • NPI issued2010 · 65% of these records are older, 33% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 47% of these records are
  • Graduated2010 · median 2005 among the 439 with a school on file
  • Record last updated2020 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in Wisconsin

There are 929 psychiatry physician records in Wisconsin.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Jeremy Chapman, MDFond Du Lac, WI 549351417301839
  2. Khalid Chaudhry, M.D.Fond Du Lac, WI 549351104921766
  3. Brian Christenson, MDFond Du Lac, WI 549351316956253
  4. Joseph Drinka, M.D.Fond Du Lac, WI 549351407870140
  5. Jeffrey Junig, M.D.Fond Du Lac, WI 549351366409823
  6. Michael Keyes, MDFond Du Lac, WI 549351154330900
  7. Mary Kirkwood, MDFond Du Lac, WI 549351811922925
  8. Jagadeeswara Musunuru, M.D.Fond Du Lac, WI 549351194940130

Common questions

What is Jennifer I. Giesige, D.O's NPI number?

Jennifer I. Giesige, D.O's National Provider Identifier (NPI) is 1235450461, issued on Jun 22, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer I. Giesige, D.O located?

The NPPES record lists a practice address at 430 E Division St, Fond Du Lac, WI, 54935. Phone: (920) 929-2300. Providers update this record themselves, so call before visiting.

How can I verify Jennifer I. Giesige, D.O's license?

NPPES lists Wisconsin license number 66482-21, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jennifer I. Giesige, D.O prescribe under Medicare Part D?

In 2024, Jennifer I. Giesige, D.O had 2,127 Medicare Part D claims for 113 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.