Peter Yang Ma, M.D.
NPI 1902831019ActiveIndividual· Internal Medicine· Arcadia, CA
Internal Medicine (M.D.) with Peter Yang Ma Medical Inc, practicing in Arcadia, California. Their prescriptions cost Medicare Part D more than their services did: $1,351,929 for 17,355 claims, against $294,783 paid for services in 2024. Pfizer Inc. was the largest of 9 companies reporting payments in 2025, $431.23 in all, mostly food and beverage.
Overview
| NPI | 1902831019 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 11, 2006 |
| Last updated in NPPES | Jun 1, 2023 |
| Certified by provider | Jun 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A53050 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 366 |
|---|---|
| Services billed | 4,403 across 33 procedure codes |
| Paid by Medicare | $294,783 |
Part D prescriptions in 2024
| Prescriptions (claims) | 17,355 · 31,329 30-day fills |
|---|---|
| Patients | 926 |
| Total drug cost | $1,351,929 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Peter Yang Ma Medical IncArcadia, CA · 2 clinicians
Other facilities
- Diamond Home Health Services, IncHome health agency · Diamond Bar, CA
- Happy Home Health ServicesHome health agency · Arcadia, CA
- Arcadia Care CenterNursing home · Arcadia, CA
Industry payments (Open Payments)
- 2025$431.23 · 18 payments from 9 companies
- 2024$575.01 · 28 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $96.27 | 4 |
| Bayer Healthcare Pharmaceuticals Inc. | $69.73 | 3 |
| Amgen Inc. | $61.59 | 2 |
| Glaxosmithkline, LLC. | $46.17 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $43.50 | 2 |
What the 2025 payments were for
- Food and Beverage$431.23 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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