DR. PETAR DUVNJAK M.D.
NPI 1922394436
Radiology - Diagnostic Radiology in Milwaukee, WI
About Dr. Petar Duvnjak M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PETAR DUVNJAK M.D. (NPI 1922394436) is an individual diagnostic radiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (60906) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Waukesha Memorial Hospital, and maintains a secondary practice location in Dallas.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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. Petar Duvnjak 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
5Medicare enrollment records show Petar Duvnjak reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 clinicians in this Medicare group
New Berlin, WI 53151
- Reassigned Medicare billing, Wisconsin enrollment
- 528 clinicians in this Medicare group
Menomonee Falls, WI 53051
- Reassigned Medicare billing, Wisconsin enrollment
- 2,294 clinicians in this Medicare group
Waukesha, WI 53188
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Radiology Waukesha Sc
- 35 clinicians in this Medicare group
Baltimore, MD 21205
- Reassigned Medicare billing, Wisconsin enrollment
- 2 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 58
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Waukesha Memorial Hospital
Acute Care Hospitals · Waukesha, WIOconomowoc Memorial Hospital
Acute Care Hospitals · Oconomowoc, WIWatertown Memorial Hospital
Acute Care Hospitals · Watertown, WIAurora St Lukes Medical Center
Acute Care Hospitals · Milwaukee, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53226 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.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
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 Petar Duvnjak's NPI number?
The NPI number for Petar Duvnjak is 1922394436. It was assigned to this individual provider in the NPPES registry on June 22, 2011.
Where is Petar Duvnjak located?
Petar Duvnjak practices at 9200 W Wisconsin Avenue Dept Of Radiology, Milwaukee, WI 53226. The listed phone number is (414) 805-3750.
What is Petar Duvnjak's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Petar Duvnjak enrolled in Medicare?
Yes. Petar Duvnjak 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 Petar Duvnjak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Petar Duvnjak reassigns Medicare benefits to 5 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI), Prohealth Medical Group Inc (New Berlin, WI), Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, WI), Radiology Waukesha S.C. (Waukesha, WI) and Johns Hopkins University (Baltimore, MD). 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 Petar Duvnjak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Petar Duvnjak accept?
Health plans from CareSource (Common Ground Healthcare) and Group Health Cooperative-SCW list Petar Duvnjak 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 Petar Duvnjak affiliated with any hospitals?
According to CMS data, Petar Duvnjak is affiliated with Waukesha Memorial Hospital, Oconomowoc Memorial Hospital, Watertown Memorial Hospital and Aurora St Lukes Medical Center.
When was this NPI record last updated?
The NPPES record for Petar Duvnjak was last updated on September 10, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.