Tin Yung, M.D.
NPI 1356407415ActiveIndividual· Internal Medicine· Rowland Heights, CA
Internal Medicine (M.D.) in Rowland Heights, California, trained at University of Texas Medical School at San Antonio (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $555,473 for 4,731 claims, against $137,366 paid for services in 2024. Amgen Inc. was the largest of 2 companies reporting payments in 2025, $92.02 in all, mostly food and beverage.
Overview
| NPI | 1356407415 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 30, 2006 |
| Last updated in NPPES | Sep 28, 2026 |
| Certified by provider | Sep 28, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G61730 | 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 | 240 |
|---|---|
| Services billed | 4,580 across 36 procedure codes |
| Paid by Medicare | $137,366 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,731 · 8,410 30-day fills |
|---|---|
| Patients | 336 |
| Total drug cost | $555,473 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Other facilities
- Happy Home Health ServicesHome health agency · Arcadia, CA
- Wise Home Health IncHome health agency · San Gabriel, CA
Industry payments (Open Payments)
- 2025$92.02 · 4 payments from 2 companies
- 2024$250.21 · 10 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $68.09 | 3 |
| Exact Sciences Corporation | $23.93 | 1 |
What the 2025 payments were for
- Food and Beverage$92.02 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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