NPPES file of Aug 9, 2026

Michelle M. Koellermeier, M.D.

Obstetrics & Gynecology Physician · Neenah, WI

Michelle M. Koellermeier, M.D. is an obstetrics & gynecology physician with a practice address in Neenah, Wisconsin, and NPI 1871598813, issued on Jun 16, 2005. Check the license (Wisconsin 46159, 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
1871598813
Name
Michelle M. Koellermeier
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
46159 WI
Self-reported in NPPES; status is on the state search
Practice location
200 Theda Clark Medical Plz, Neenah, WI 54956
Phone
(920) 729-7105
Enumerated
Jun 16, 2005
Record last updated
Sep 13, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicaid ID
34444300 WI
Medicare enrollment
Enrolled (PECOS I20040130000104); accepts Medicare assignment
Medical or professional school
New York Medical College, 1995
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 200 Theda Clark Medical Plz

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

  1. Mary Barker, FNP-CNurse Practitioner1902807639
  2. Angela BehmSurgical Technologist1043503360
  3. Christina Danz, N.P.Women's Health Nurse Practitioner1659376614
  4. Richard Dziewit, CRNACertified Registered Nurse Anesthetist1306588256
  5. Eric Eberts, M.D.Obstetrics & Gynecology Physician1790780708
  6. Timothy Edison, MDGastroenterology Physician1861425902

Verify Michelle M. Koellermeier in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 46159
    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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33% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

110 Medicare Part D claims for 39 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.

  1. Michelle Koellermeier110
  2. Specialty average165

Most prescribed

  1. Estradiol26 claims
  2. Clobetasol Propionate20 claims
  3. Metronidazole14 claims
  4. Misoprostol14 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: $104.17

6 payments; by number, the most common kind was food and beverage; the largest payer was Exact Sciences Corporation. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michelle Koellermeier$104.17
  2. Specialty average$1,030.61

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. Womens Health Specialists SCAppleton, WI

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

Michelle M. Koellermeier among 796 obstetrics & gynecology physician records in Wisconsin

Michelle M. Koellermeier, M.D. is one of 796 obstetrics & gynecology physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1995 · median 2007 among the 478 with a school on file
  • Record last updated2018 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

12 obstetrics & gynecology physician records list a practice address in Neenah

They are 12 of the 919 NPPES records with a practice address in Neenah, and 796 obstetrics & gynecology physician records in Wisconsin.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Fred Bartizal, MDNeenah, WI 549561205073988
  2. Allison Brubaker, M.D.Neenah, WI 549561386094050
  3. Eric Eberts, M.D.Neenah, WI 549561790780708
  4. Valary Gass, M.D.Neenah, WI 549561558533695
  5. Marley Kercher, M.D.Neenah, WI 549561992700918
  6. Amber Post, MDNeenah, WI 549561760556302
  7. Tina Ramsey, MDNeenah, WI 549561679602510
  8. Adriana Schaufelberger, MD, MPHNeenah, WI 549561396846481

Common questions

What is Michelle M. Koellermeier, M.D.'s NPI number?

Michelle M. Koellermeier, M.D.'s National Provider Identifier (NPI) is 1871598813, issued on Jun 16, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Michelle M. Koellermeier, M.D. located?

The NPPES record lists a practice address at 200 Theda Clark Medical Plz, Neenah, WI, 54956. Phone: (920) 729-7105. Providers update this record themselves, so call before visiting.

How can I verify Michelle M. Koellermeier, M.D.'s license?

NPPES lists Wisconsin license number 46159, 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 Michelle M. Koellermeier, M.D. prescribe under Medicare Part D?

In 2024, Michelle M. Koellermeier, M.D. had 110 Medicare Part D claims for 39 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.