Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Nicholas Robert Rydzewski, MD

Individual provider Radiation Oncology Physician · NPI 1568855161

Dr. Nicholas Robert Rydzewski, MD is a Radiation Oncology Physician in Janesville, Wisconsin. Practices as a sole proprietor and works from 3 locations. Licensed in Illinois, Michigan and Wisconsin.

Licensed in
IL, MI, WI
In the registry since
2015
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1000 Mineral Point Ave
Janesville, WI 53548-2982
Phone: (608) 756-6731
Fax: (608) 756-6013
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 2400 N Rockton Ave, Rockford, IL 61103-3655 — (815) 971-6188
  • 8201 E Riverside Blvd, Rockford, IL 61114-2300 — (815) 971-7000

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 72314-20 (WI)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 036153609 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence R322630745086 (MI)

Record details

NPI number1568855161
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 6, 2015
Last updated in NPPESSeptember 28, 2020
Certification dateSeptember 28, 2020

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