RENEE MARIE ZIMMERMANN M.D.
NPI 1871810416
Obstetrics & Gynecology in Wauwatosa, WI
About Renee Marie Zimmermann M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RENEE MARIE ZIMMERMANN M.D. (NPI 1871810416) is an individual obstetrics & gynecology provider in Wauwatosa, Wisconsin, licensed in Wisconsin (64532) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with Ascension Columbia St Mary's Hospital Milwaukee, and is a graduate of University Of Wisconsin School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses
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
Renee Marie Zimmermann 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
2Medicare enrollment records show Renee Zimmermann reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glendale, WI 53212
- Reassigned Medicare billing, Wisconsin enrollment
- 1,343 clinicians in this Medicare group
Glendale, WI 53217
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
- 856 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Columbia St Mary's Hospital Milwaukee
Acute Care Hospitals · Milwaukee, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53222 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Renee Zimmermann's NPI number?
The NPI number for Renee Zimmermann is 1871810416. It was assigned to this individual provider in the NPPES registry on April 21, 2010.
Where is Renee Zimmermann located?
Renee Zimmermann practices at 3040 N 117th St Suite 200, Wauwatosa, WI 53222. The listed phone number is (414) 778-0070.
What is Renee Zimmermann's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Renee Zimmermann enrolled in Medicare?
Yes. Renee Zimmermann 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 Renee Zimmermann's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Renee Zimmermann reassigns Medicare benefits to 2 organizations: Ascension Medical Group-Southeast Wisconsin Inc (Glendale, WI) and Columbia St. Mary's Hospital Milwaukee, Inc (Glendale, WI). 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 Renee Zimmermann's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Renee Zimmermann affiliated with any hospitals?
According to CMS data, Renee Zimmermann is affiliated with Ascension Columbia St Mary's Hospital Milwaukee.
When was this NPI record last updated?
The NPPES record for Renee Zimmermann was last updated on July 25, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Renee Marie Zimmermann, M.D. · NPI 1871810416
Obstetrics & Gynecology physician in Wauwatosa, Wisconsin. Individual provider, active in the CMS NPPES registry since April 21, 2010.
## Identity
- **NPI:** 1871810416 (Entity type: Individual)
- **Enumerated:** April 21, 2010
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 64532 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 3040 N 117TH ST, SUITE 200, Wauwatosa, WI 53222-4128
- **Phone:** (414) 778-0070 · **Fax:** (414) 778-0359
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Ascension Medical Group-Southeast Wisconsin Inc (NPI 1609881077, Glendale, WI); Columbia St. Mary's Hospital Milwaukee, Inc (NPI 1215945456, Glendale, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Wisconsin School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** July 25, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1871810416) · Data from the CMS NPPES public registry.