Irvin V. Ma, MD
NPI 1487233201ActiveIndividual· Internal Medicine· Santa Clara, CA
Internal Medicine (MD) in Santa Clara, California, trained at University of Nevada School of Medicine (class of 2021). Part D covered 22 prescriptions written in 2024, 95% of them generic. 3-D Matrix, Inc. was the largest of 4 companies reporting payments in 2025, $1,253 in all, mostly food and beverage.
Overview
| NPI | 1487233201 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 7, 2021 |
| Last updated in NPPES | Oct 22, 2025 |
| Certified by provider | Oct 22, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A196566 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 22 · 59 30-day fills |
|---|---|
| Total drug cost | $441.38 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Nevada School of Medicine |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Internal Medicine |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Industry payments (Open Payments)
- 2025$1,253 · 10 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| 3-D Matrix, Inc. | $806.54 | 6 |
| Abbvie Inc. | $188.81 | 2 |
| Janssen Scientific Affairs, LLC | $133.31 | 1 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $124.55 | 1 |
What the 2025 payments were for
- Food and Beverage$1,253 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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