DR. MICHELLE M. KOELLERMEIER M.D.
NPI 1871598813
Obstetrics & Gynecology in Neenah, WI
About Dr. Michelle M. Koellermeier M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHELLE M. KOELLERMEIER M.D. (NPI 1871598813) is an individual obstetrics & gynecology provider in Neenah, Wisconsin, licensed in Wisconsin (46159) and active in the NPI registry since June 2005. She is enrolled in Medicare PECOS, is affiliated with Thedacare Regional Med Ctr - Neenah, and is a graduate of New York Medical College (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Michelle M. Koellermeier M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Michelle Koellermeier reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Appleton, WI 54911
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Womens Health Specialists Sc
- 25 clinicians in this Medicare group
Watertown, WI 53098
- Reassigned Medicare billing, Wisconsin enrollment
- 215 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Obhg Wisconsin Sc
- 58 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Thedacare Regional Med Ctr - Neenah
Acute Care Hospitals · Neenah, WIThedacare Regional Medical Center - Appleton Inc
Acute Care Hospitals · Appleton, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54956 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEENAH, WI 54956
NEENAH, WI 54956
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michelle Koellermeier's NPI number?
The NPI number for Michelle Koellermeier is 1871598813. It was assigned to this individual provider in the NPPES registry on June 16, 2005.
Where is Michelle Koellermeier located?
Michelle Koellermeier practices at 200 Theda Clark Medical Plz Ste 130, Neenah, WI 54956. The listed phone number is (920) 729-7105.
What is Michelle Koellermeier's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Michelle Koellermeier enrolled in Medicare?
Yes. Michelle Koellermeier is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michelle Koellermeier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Koellermeier reassigns Medicare benefits to 3 organizations: Women's Health Specialists, S.C. (Appleton, WI), Watertown Physician Practices LLC (Watertown, WI) and Obhg Wisconsin, S.C. (Greenville, SC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michelle Koellermeier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michelle Koellermeier accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 2 other insurers list Michelle Koellermeier as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Michelle Koellermeier affiliated with any hospitals?
According to CMS data, Michelle Koellermeier is affiliated with Thedacare Regional Med Ctr - Neenah and Thedacare Regional Medical Center - Appleton Inc.
When was this NPI record last updated?
The NPPES record for Michelle Koellermeier was last updated on September 13, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Michelle M. Koellermeier, M.D. · NPI 1871598813
Obstetrics & Gynecology physician in Neenah, Wisconsin. Individual provider, active in the CMS NPPES registry since June 16, 2005.
## Identity
- **NPI:** 1871598813 (Entity type: Individual)
- **Enumerated:** June 16, 2005
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 46159 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 THEDA CLARK MEDICAL PLZ, STE 130, Neenah, WI 54956-2790
- **Phone:** (920) 729-7105
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Women's Health Specialists, S.C. (NPI 1417086216, Appleton, WI); Watertown Physician Practices LLC (NPI 1760866891, Watertown, WI); Obhg Wisconsin, S.C. (NPI 1699273862, Greenville, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York Medical College, class of 1995
## Record status
- **NPPES last updated:** September 13, 2018
- **Other identifiers:** Medicaid 34444300 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1871598813) · Data from the CMS NPPES public registry.