Doctor profile · Federal record
Dr. John Ma, MD, PHD
Radiation Oncology Physician (CMS: Radiation Oncology) · Topeka, KS
- NPI 1205067758
- Accepts Medicare
- 17 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1414 Sw 8Th Ave
Topeka, KS 666061535
(785) 354-5300 - Additional location
-
1500 Sw 10Th Ave
Topeka, KS 666041301
(785) 624-6000
Credentials & registration
- NPI registered
- July 2009 — 17 yrs on file
- Profile last updated
- February 13, 2026
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- Kansas #04 37990
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1205067758. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
7,625
Distinct HCPCS
10
Medicare allowed
$717,488
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77014 |
Ct guidance for insertion of radiation therapy fields | 4,070 | 168 | $43 | |
77427 |
Radiation treatment management, 5 treatment sessions | 896 | 172 | $181 | |
77300 |
Calculation of radiation therapy dose | 653 | 200 | $31 | |
77334 |
Design and construction of complex radiation treatment device | 310 | 194 | $58 | |
77338 |
Design and construction of radiation treatment device for high precision radiation therapy | 296 | 194 | $217 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 266 | 192 | $135 | |
77263 |
Complex radiation therapy planning | 225 | 193 | $160 | |
77301 |
High precision radiation therapy planning | 222 | 188 | $405 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 191 | 191 | $171 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 90 | 86 | $93 |
In context: peer comparison
Among 1 peers in Topeka Radiation Oncology Physician, average services per provider: 381. This provider delivers 20× the peer median.Open Payments
Industry payments received
All-time total
$240
Transactions
7
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, INC. | 7 | $239.96 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
168
Patients
69
Total drug cost
$2,936
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Dexamethasone | Generic | 30 | 22 | $370 |
| Oxybutynin Chloride | Generic | 30 | 0 | $511 |
| Tamsulosin Hcl | Generic | 30 | 13 | $788 |
| Prednisone | Generic | 27 | 20 | $198 |
| Fluconazole | Generic | 20 | 14 | $323 |
| Pentoxifylline | Generic | 19 | 0 | $442 |
| Oxybutynin Chloride ER (Oxybutynin Chloride) | Brand | 12 | 0 | $305 |
Hospital affiliations
Frequently asked questions
What is Dr. John Ma's medical specialty?
Dr. John Ma practices Radiation Oncology Physician in Topeka, KS.
Where does Dr. John Ma practice?
Dr. John Ma practices at 1414 Sw 8Th Ave, Topeka, KS 666061535. Office phone: 7853545300.
What is Dr. John Ma's NPI?
Dr. John Ma's National Provider Identifier (NPI) is 1205067758, issued by NPPES.
Does Dr. John Ma accept Medicare assignment?
Yes. Dr. John Ma accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Ma commonly perform?
Top Medicare-reported procedures in 2023: Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Radiation treatment management, 5 treatment sessions (HCPCS 77427); Calculation of radiation therapy dose (HCPCS 77300). Source: CMS Medicare Physician & Other Practitioners file.