ROMAN KOWALCHUK
NPI 1962965608
Radiology - Radiation Oncology in Rochester, MN
About Roman Kowalchuk NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROMAN KOWALCHUK (NPI 1962965608) is an individual radiation oncology provider in Rochester, Minnesota, licensed in Minnesota (67850) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Hospital Rochester, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
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
Roman Kowalchuk 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
3Medicare enrollment records show Roman Kowalchuk reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rochester, MN 55905
- Reassigned Medicare billing, Minnesota and Wisconsin enrollments
- Also billed through NPI 1922074434 (Wisconsin)
- 6,534 clinicians in this Medicare group
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,003 clinicians in this Medicare group
Menomonie, WI 54751
- Reassigned Medicare billing, Wisconsin enrollment
- 1,248 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 8
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mayo Clinic Hospital Rochester
Acute Care Hospitals · Rochester, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55905 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.
ROCHESTER, MN 55905
ROCHESTER, MN 55905
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 Roman Kowalchuk's NPI number?
The NPI number for Roman Kowalchuk is 1962965608. It was assigned to this individual provider in the NPPES registry on April 10, 2019.
Where is Roman Kowalchuk located?
Roman Kowalchuk practices at 200 1st St SW, Rochester, MN 55905. The listed phone number is (507) 284-2511.
What is Roman Kowalchuk's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Roman Kowalchuk enrolled in Medicare?
Yes. Roman Kowalchuk 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 Roman Kowalchuk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Roman Kowalchuk reassigns Medicare benefits to 3 organizations: Mayo Clinic (Rochester, MN), Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (La Crosse, WI) and Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (Menomonie, WI). 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 Roman Kowalchuk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Roman Kowalchuk affiliated with any hospitals?
According to CMS data, Roman Kowalchuk is affiliated with Mayo Clinic Hospital Rochester.
When was this NPI record last updated?
The NPPES record for Roman Kowalchuk was last updated on October 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.
# Roman Kowalchuk · NPI 1962965608
Radiation Oncology physician in Rochester, Minnesota. Individual provider, active in the CMS NPPES registry since April 10, 2019.
## Identity
- **NPI:** 1962965608 (Entity type: Individual)
- **Enumerated:** April 10, 2019
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** 67850 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 1ST ST SW, Rochester, MN 55905-0001
- **Phone:** (507) 284-2511
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Mayo Clinic (NPI 1114343860, Rochester, MN); Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (NPI 1629056049, La Crosse, WI); Mayo Clinic Health System-Northwest Wisconsin Region, Inc. (NPI 1235666967, Menomonie, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Virginia School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** October 17, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1962965608) · Data from the CMS NPPES public registry.