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

Dr. Justin Michael Barnes, MD, MS

Individual provider Radiation Oncology Physician · NPI 1356968069

Dr. Justin Michael Barnes, MD, MS is a Radiation Oncology in Rochester, Minnesota. Graduated from Saint Louis University School of Medicine in 2020, 6 years ago. Practices with Mayo Clinic, a 4,796-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Minnesota and Missouri.

Years since qualifying
6
Trained at
Saint Louis University School of Medicine
Licensed in
MN, MO
In the registry since
2020
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

200 1st St SW
Rochester, MN 55905-0001
Phone: (507) 284-2511
Show map & directions

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

Additional practice locations (1)

  • 4921 Parkview Pl Lowr Level, Saint Louis, MO 63110-1032 — (314) 265-1832

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 79261 (MN)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 2020019027 (MO)

Record details

NPI number1356968069
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MS
Sole proprietorNo
NPI enumeratedJune 29, 2020
Last updated in NPPESSeptember 10, 2025
Certification dateSeptember 10, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2020 (6 years in practice)
Group practice Mayo Clinic — 4796 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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