Than T. Ma, M.D.
NPI 1457589129ActiveIndividual· Internal Medicine· Carmichael, CA
Internal Medicine (M.D.) with Dignity Health Medical Foundation, practicing in Carmichael, California. 457 Medicare patients in 2024, $107,680 paid; nearly all of their 425 Part D prescriptions were generic (90%). Lists Mercy Hospital of Folsom and 1 other hospital as hospital affiliations.
Overview
| NPI | 1457589129 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 1, 2009 |
| Last updated in NPPES | Dec 20, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A110909 | CA |
| Internal Medicine | 207R00000X | ME104053 | FL |
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 - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 457 |
|---|---|
| Services billed | 1,106 across 7 procedure codes |
| Paid by Medicare | $107,680 |
Part D prescriptions in 2024
| Prescriptions (claims) | 425 · 437 30-day fills |
|---|---|
| Patients | 160 |
| Total drug cost | $18,864 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Hospitalist |
Medical group
- Dignity Health Medical FoundationFolsom, CA · 1,184 clinicians
Hospital affiliations
- Mercy Hospital of FolsomFolsom, CA
- Mercy San Juan Medical CenterCarmichael, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Carmichael
- 1518369891
- 1508899758
- 1720466782
- 1225321292
- 1326316654
- 1609481837
- 1801861547
- 1942391339
- 1558471607
- 1588866800
- 1841300985
- 1053332536