# John K Ma

Source: https://ourhealthnetwork.com/doctor/john-ma-1205067758
NPI: 1205067758
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

John K Ma is a radiation oncology based in Topeka, KS practicing at Cotton-o'neil Clinic Revocable Trust with NPI 1205067758.

## Profile

- Primary specialty: Radiation Oncology
- Gender: Male
- Medical school: UNIVERSITY OF MISSISSIPPI SCHOOL OF MEDICINE
- Graduation year: 2009
- NPI: 1205067758 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1205067758))

## Practice and contact

- Practice name: Cotton-o'neil Clinic Revocable Trust
- Address: 1414 Sw 8th Ave, Topeka, KS, 666061535
- Phone: (785) 354-5300
- Group practice size: 648 members

## Insurance accepted (10 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [UnitedHealthcare](https://ourhealthnetwork.com/insurance/unitedhealthcare) — 12 plans
- [Highmark BCBS Delaware](https://ourhealthnetwork.com/insurance/highmark-bcbs-delaware) — 11 plans
- [Humana](https://ourhealthnetwork.com/insurance/humana) — 11 plans
- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 10 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 6 plans
- [Highmark BCBS WV](https://ourhealthnetwork.com/insurance/highmark-bcbs-wv) — 6 plans
- [UMR](https://ourhealthnetwork.com/insurance/umr) — 3 plans
- [BCBS Kansas](https://ourhealthnetwork.com/insurance/bcbs-kansas) — 2 plans
- [Oxford Health Plans (UHC)](https://ourhealthnetwork.com/insurance/oxford-health-plans-uhc) — 2 plans
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers John K Ma, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1205067758).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 7 disclosed payments from medical industry sources totaling approximately $240.

Largest disclosed payer: Medtronic, Inc. ($240 cumulative).

Source: CMS Open Payments program (federal financial-transparency dataset). Industry payment disclosures do not imply any wrongdoing; many are legitimate consulting fees, research support, or speaker honoraria.

## Related on OurHealthNetwork

- [More Radiation Oncology doctors in TOPEKA, KS](https://ourhealthnetwork.com/radiation-oncology/ks/topeka)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1205067758)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)