JOHN A KOSIAK MN
NPI 1033101886
Radiology - Radiation Oncology in Coon Rapids, MN
About John A Kosiak Mn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN A KOSIAK MN (NPI 1033101886) is an individual radiation oncology provider in Coon Rapids, Minnesota, licensed in Minnesota (27894) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 10
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John A Kosiak Mn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Kosiak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Edina, MN 55439
- Reassigned Medicare billing, Minnesota and Wisconsin enrollments
- 20 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 9
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55433 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COON RAPIDS, MN 55433
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 John Kosiak's NPI number?
The NPI number for John Kosiak is 1033101886. It was assigned to this individual provider in the NPPES registry on August 18, 2005.
Where is John Kosiak located?
John Kosiak practices at 11850 Blackfoot St NW Ste 150, Coon Rapids, MN 55433. The listed phone number is (763) 433-0221.
What is John Kosiak's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is John Kosiak enrolled in Medicare?
Yes. John Kosiak is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Kosiak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Kosiak reassigns Medicare benefits to Minneapolis Radiation Oncology PA (Edina, MN). The 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 John Kosiak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Kosiak was last updated on November 28, 2023. 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.