My-Diem Tong, MD
NPI 1073680898ActiveIndividual· Internal Medicine, Cardiovascular Disease· Riverside, CA
Internal Medicine, Cardiovascular Disease (MD) in Riverside, California, trained at University of California, Irvine, California College of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $70,730 for 883 claims, against $2,849 paid for services in 2024. Verona Pharma, Inc. was the largest of 2 companies reporting payments in 2025, $227.10 in all, mostly food and beverage.
Overview
| NPI | 1073680898 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 29, 2006 |
| Last updated in NPPES | Dec 3, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A65140 | 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 | 32 |
|---|---|
| Services billed | 37 across 10 procedure codes |
| Paid by Medicare | $2,849 |
Part D prescriptions in 2024
| Prescriptions (claims) | 883 · 2,629 30-day fills |
|---|---|
| Patients | 220 |
| Total drug cost | $70,730 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital, RiversideRiverside, CA
Industry payments (Open Payments)
- 2025$227.10 · 2 payments from 2 companies
- 2024$53.99 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Verona Pharma, Inc. | $147.10 | 1 |
| F. Hoffmann-La Roche Ag | $80.00 | 1 |
What the 2025 payments were for
- Food and Beverage$227.10 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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