NPPES file of Aug 9, 2026

Ellen M. Hartenbach, MD

Gynecologic Oncology Physician · Madison, WI

Ellen M. Hartenbach, MD is a gynecologic oncology physician with a practice address in Madison, Wisconsin, and NPI 1689640708, issued on Feb 28, 2006. Check the license (Wisconsin 37100, 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
1689640708
Name
Ellen M. Hartenbach
Credential
MD
Primary taxonomy
Gynecologic Oncology Physician 207VX0201X
License number
37100 WI
Self-reported in NPPES; status is on the state search
Practice location
600 Highland Ave, Madison, WI 53792
Phone
(608) 265-1700
Enumerated
Feb 28, 2006
Record last updated
Jan 19, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(608) 263-2201
Medicare enrollment
Enrolled (PECOS I20100303000213); accepts Medicare assignment
Medical or professional school
University Of Missouri, Columbia School Of Medicine, 1988
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 600 Highland Ave

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

  1. Michael AabergSurgery Physician1346991064
  2. Carrah Aadrik, CRNACertified Registered Nurse Anesthetist1326423286
  3. Daniel Abbott, MDSurgical Oncology Physician1750412615
  4. Alaa Abd-ElsayedPain Medicine Physician1194967703
  5. Safiyya Abdulkadir, MDRheumatology Physician1093455826
  6. Edwin Abel, M.D.Urology Physician1083800510

Verify Ellen M. Hartenbach in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 37100
    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

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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79% fewer Medicare Part D claims than the average gynecologic oncology physician in 2024

40 Medicare Part D claims, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.

  1. Ellen Hartenbach40
  2. Specialty average195

Most prescribed

  1. Ondansetron Hcl15 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.

Industry payments in 2024: $42.66

1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 1,199 providers of this specialty with any payment received $6,387.20 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ellen Hartenbach$42.66
  2. Specialty average$6,387.20

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. University OF Wisconsin Medical Foundation IncJohnson Creek, WI

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

Ellen M. Hartenbach among 35 gynecologic oncology physician records in Wisconsin

Ellen M. Hartenbach, MD is one of 35 gynecologic oncology physician records with a practice address in Wisconsin. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 54% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1988 · median 2000 among the 26 with a school on file
  • Record last updated2021 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0201X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gynecologic Oncology Physician providers in Wisconsin

There are 35 gynecologic oncology physician records in Wisconsin.

The 8 gynecologic oncology physician records with the nearest ZIP codes

  1. Lisa Barroilhet, M.D.Madison, WI 537921730300443
  2. Elizabeth Farabee, MDMadison, WI 537921861079584
  3. Julia Gelissen, MDMadison, WI 537921487273025
  4. Laura Huffman, M.D.Madison, WI 537921376855288
  5. Kari Kubalanza, M.D.Madison, WI 537921013250604
  6. David Kushner, MDMadison, WI 537921659347672
  7. Laurel RiceMadison, WI 537921619046257
  8. Stephen Rose, MDMadison, WI 537921316987407

Common questions

What is Ellen M. Hartenbach, MD's NPI number?

Ellen M. Hartenbach, MD's National Provider Identifier (NPI) is 1689640708, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ellen M. Hartenbach, MD located?

The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 265-1700. Providers update this record themselves, so call before visiting.

How can I verify Ellen M. Hartenbach, MD's license?

NPPES lists Wisconsin license number 37100, 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 Ellen M. Hartenbach, MD prescribe under Medicare Part D?

In 2024, Ellen M. Hartenbach, MD had 40 Medicare Part D claims; the average among gynecologic oncology physician prescribers was 195. 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.