Quick answers
- Which hospitals does Joseph E. Zilisch work at?
- Medicare's official clinician data lists Joseph E. Zilisch 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 Joseph E. Zilisch see patients?
- Medicare's clinician data lists 2 practice locations, including Mequon, WI and Milwaukee, WI. Call before your visit to confirm the address.
- What is Joseph E. Zilisch's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Joseph E. Zilisch accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph E. Zilisch 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 Joseph E. Zilisch?
- (262) 241-1919, as listed in official Medicare / NPI Registry data.
- What is Joseph E. Zilisch's NPI number?
- 1144683517. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joseph E. Zilisch works
Medicare's Facility Affiliation Data lists Joseph E. Zilisch 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 Joseph E. Zilisch is enrolled with Medicare (CMS data updated 2026-10-02).
- 10320 N Port Washington RdMequon, WI 53092 (262) 241‑1919
- 5150 N Port Washington Rd, Suite 251Milwaukee, WI 53217 (414) 332‑0606
Group practices
Medicare enrollment lists Joseph E. Zilisch as a member of this group (CMS data updated 2026-10-02).
- Madison Medical Affiliates Inc86 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Mequon
Clinicians with the same Medicare primary specialty in Mequon, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144683517 |
| 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