Quick answers
- Which hospitals does Petar Duvnjak work at?
- Medicare's official clinician data lists Petar Duvnjak at 4 hospitals: Aurora St Lukes Medical Center, Oconomowoc Memorial Hospital, Watertown Memorial Hospital and Waukesha Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Petar Duvnjak see patients?
- Medicare's clinician data lists 5 practice locations, including Brookfield, WI, Waukesha, WI and Oconomowoc, WI. Call before your visit to confirm the address.
- What is Petar Duvnjak's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Petar Duvnjak accept Medicare assignment?
- Yes. Medicare's clinician data says Petar Duvnjak 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 Petar Duvnjak?
- (262) 928-7100, as listed in official Medicare / NPI Registry data.
- What is Petar Duvnjak's NPI number?
- 1922394436. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Petar Duvnjak works
Medicare's Facility Affiliation Data lists Petar Duvnjak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aurora St Lukes Medical CenterMilwaukee, WI · Acute Care Hospital · CCN 520138
- Oconomowoc Memorial HospitalOconomowoc, WI · Acute Care Hospital · CCN 520062
- Watertown Memorial HospitalWatertown, WI · Acute Care Hospital · CCN 520116
- Waukesha Memorial HospitalWaukesha, WI · Acute Care Hospital · CCN 520008
Practice locations
Addresses where Petar Duvnjak is enrolled with Medicare (CMS data updated 2026-10-02).
- 195 Discovery DrBrookfield, WI 53045 (262) 928‑7100
- 725 American AveWaukesha, WI 53188 (262) 928‑2400
- 791 Summit AveOconomowoc, WI 53066 (262) 569‑0263
- N16W24131 Riverwood DrWaukesha, WI 53188 (262) 696‑0808
- W297n3172 Woodridge CirPewaukee, WI 53072 (410) 933‑6423
Group practices
Medicare enrollment lists Petar Duvnjak as a member of these groups (CMS data updated 2026-10-02).
- Prohealth Medical Group Inc479 clinicians in the group
- Johns Hopkins University197 clinicians in the group
- Radiology Waukesha SC29 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Brookfield
Clinicians with the same Medicare primary specialty in Brookfield, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922394436 |
| 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