John Ming-Kay Ma, M.D.
NPI 1912901737ActiveIndividual· Family Medicine· Houston, TX
Family Medicine (M.D.) with Tmh Physician Organization, practicing in Houston, Texas. Their prescriptions cost Medicare Part D more than their services did: $31,225 for 230 claims, against $4,701 paid for services in 2024. Viiv Healthcare Company reported $24.17 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1912901737 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 9, 2005 |
| Last updated in NPPES | Jan 21, 2026 |
| Certified by provider | Jan 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | K5341 | TX |
| Family Medicine | 207Q00000X | C185605 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (CA); Practitioner - Family Practice (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 21 |
|---|---|
| Services billed | 71 across 14 procedure codes |
| Paid by Medicare | $4,701 |
Part D prescriptions in 2024
| Prescriptions (claims) | 230 · 482 30-day fills |
|---|---|
| Patients | 34 |
| Total drug cost | $31,225 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Tmh Physician OrganizationHouston, TX · 13 clinicians
Industry payments (Open Payments)
- 2025$24.17 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $24.17 | 1 |
What the 2025 payments were for
- Food and Beverage$24.17 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other family medicine physicians in Houston
- 1003267527
- 1003856089
- 1013006485
- 1013394550
- 1013948181
- 1023389327
- 1023674231
- 1033390828
- 1043241268
- 1043241441
- 1043295652
- 1043898810
All 1,802 family medicine physicians in Houston · All family medicine physicians in Texas