Quick answers
- Which hospitals does Renee M. Zimmermann work at?
- Medicare's official clinician data lists Renee M. Zimmermann at 1 hospital: Ascension Columbia St Marys Hospital Milwaukee. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Renee M. Zimmermann see patients?
- Medicare's clinician data lists 2 practice locations, including Mequon, WI. Call before your visit to confirm the address.
- What is Renee M. Zimmermann's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Renee M. Zimmermann accept Medicare assignment?
- Yes. Medicare's clinician data says Renee M. Zimmermann accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Renee M. Zimmermann?
- (262) 243-7300, as listed in official Medicare / NPI Registry data.
- What is Renee M. Zimmermann's NPI number?
- 1871810416. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Renee M. Zimmermann works
Medicare's Facility Affiliation Data lists Renee M. Zimmermann at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute Care Hospital · CCN 520051
Practice locations
Addresses where Renee M. Zimmermann is enrolled with Medicare (CMS data updated 2026-10-02).
- 13111 N Port Washington RdMequon, WI 53097 (262) 243‑7300
- 13133 N Port Washington Rd, Suite G06Mequon, WI 53097 (262) 243‑8371
Group practices
Medicare enrollment lists Renee M. Zimmermann as a member of this group (CMS data updated 2026-10-02).
- Columbia St Marys Hospital Milwaukee Inc306 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Mequon
Clinicians with the same Medicare primary specialty in Mequon, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871810416 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians