HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / KS

JOHN K MA

RADIATION ONCOLOGY

Medical school: UNIVERSITY OF MISSISSIPPI SCHOOL OF MEDICINE

Graduated: 2009

NPI: 1205067758

Practice Locations (1)

COTTON-O'NEIL CLINIC REVOCABLE TRUST

1414 SW 8TH AVE

TOPEKA, KS 666061535

7853545300

Source: CMS National Downloadable File, September 2026.