Nicholas Robert Rydzewski, MD
Radiation Oncology Physician · Janesville, WI
Nicholas Robert Rydzewski, MD is a radiation oncology physician with a practice address in Janesville, Wisconsin, and NPI 1568855161, issued on Mar 6, 2015. Check the license (Wisconsin 72314-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Nicholas Robert Rydzewski
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 72314-20 WI
036153609 IL
R322630745086 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Mineral Point Ave, Janesville, WI 53548
- Phone
- (608) 756-6731
- Enumerated
- Mar 6, 2015
- Record last updated
- Sep 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (608) 756-6013
- Medicaid ID
- 1568855161 WI
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 153 in Wisconsin → Look up another NPI →
Also registered at 1000 Mineral Point Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marwan Abdulsattar, MDAnesthesiology Physician1265790695
- Kathleen Agard, MDAnesthesiology Physician1558503235
- Imdad Ahmed, MDCardiovascular Disease Physician1053536219
- Muhammad Alkhan, MDInternal Medicine Physician1114950813
- Rachel Allen, MDEmergency Medicine Physician1184823999
- Giuseppe Altamore, DOEmergency Medicine Physician1477828564
Verify Nicholas Robert Rydzewski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 72314-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Nicholas Robert Rydzewski among 153 radiation oncology physician records in Wisconsin
Nicholas Robert Rydzewski, MD is one of 153 radiation oncology physician records with a practice address in Wisconsin. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2015, is newer than 75% of them.
- NPI issued2015 · 75% of these records are older, 20% newer
- In a Medicare fileNo · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 78% of these records are
- Record last updated2020 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Wisconsin
There are 153 radiation oncology physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 153 in Wisconsin → Every provider in Janesville → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Jonathan Lubin, MDJanesville, WI 535461790244754
- Tamara Vern-Gross, DOMonroe, WI 535661679732036
- Bartlett Witherspoon, MDMonroe, WI 535661295717973
- Eric Xanthopoulos, MDBeloit, WI 535111457693079
- Lewis Rosenberg, MD PHDMount Pleasant, WI 534051790974780
- James Taylor, MDRacine, WI 534051821030800
- Laura Ulmer, MDRacine, WI 534051336187251
- Matthew Witek, MDMadison, WI 537031154651727
Common questions
What is Nicholas Robert Rydzewski, MD's NPI number?
Nicholas Robert Rydzewski, MD's National Provider Identifier (NPI) is 1568855161, issued on Mar 6, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Robert Rydzewski, MD located?
The NPPES record lists a practice address at 1000 Mineral Point Ave, Janesville, WI, 53548. Phone: (608) 756-6731. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Robert Rydzewski, MD's license?
NPPES lists Wisconsin license number 72314-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.