Quick answers
- Which hospitals does John K. Ma work at?
- Medicare's official clinician data lists John K. Ma at 4 hospitals: Great Plains of Sabetha, Stormont Vail Hospital, University of Kansas Health System - St Francis Campus and University of Kansas Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John K. Ma see patients?
- Medicare's clinician data lists 1 practice location in Topeka, KS. Call before your visit to confirm the address.
- What is John K. Ma's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does John K. Ma accept Medicare assignment?
- Yes. Medicare's clinician data says John K. Ma accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John K. Ma?
- (785) 354-5300, as listed in official Medicare / NPI Registry data.
- What is John K. Ma's NPI number?
- 1205067758. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John K. Ma works
Medicare's Facility Affiliation Data lists John K. Ma at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Great Plains of SabethaSabetha, KS · Critical Access Hospital · CCN 171338
- Stormont Vail HospitalTopeka, KS · Acute Care Hospital · CCN 170086
- University of Kansas Health System - St Francis CampusTopeka, KS · Acute Care Hospital · CCN 170016
- University of Kansas HospitalKansas City, KS · Acute Care Hospital · CCN 170040
Practice locations
Addresses where John K. Ma is enrolled with Medicare (CMS data updated 2026-10-02).
- 1414 SW 8th AveTopeka, KS 66606 (785) 354‑5300
Group practices
Medicare enrollment lists John K. Ma as a member of this group (CMS data updated 2026-10-02).
- Cotton-O'neil Clinic Revocable Trust666 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Kansas
Clinicians with the same Medicare primary specialty in Kansas — not a recommendation.
Clinician information
| Medical school | University Of Mississippi School Of Medicine |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205067758 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians