Jason C. Chang, MD, MS
NPI 1104990704ActiveIndividual· Internal Medicine· Milpitas, CA
Internal Medicine (MD, MS) with Permanente Medical Group Inc, practicing in Milpitas, California. Their prescriptions cost Medicare Part D more than their services did: $163,488 for 5,173 claims, against $1,139 paid for services in 2024. Abbott Laboratories reported $162.38 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1104990704 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MS |
| Sole proprietor | No |
| NPI issued | Nov 17, 2006 |
| Last updated in NPPES | Dec 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A83105 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 22 across 10 procedure codes |
| Paid by Medicare | $1,139 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,173 · 14,119 30-day fills |
|---|---|
| Patients | 597 |
| Total drug cost | $163,488 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Industry payments (Open Payments)
- 2024$162.38 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $162.38 | 1 |
What the 2024 payments were for
- Food and Beverage$162.38 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Milpitas
- 1487791703
- 1588683031
- 1720066426
- 1982711495
- 1053324459
- 1275751174
- 1295809895
- 1326127069
- 1710064654
- 1548347479
- 1619167699
- 1730344482
All 43 internal medicine physicians in Milpitas · All internal medicine physicians in California