Tan Lin Wong, MD
NPI 1790728749ActiveIndividual· Internal Medicine· La Verne, CA
Internal Medicine (MD) in La Verne, California, licensed in CA, with an NPI issued in June 2006. Their prescriptions cost Medicare Part D more than their services did: $3,682,610 for 14,285 claims, against $139,303 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 28 companies reporting payments in 2025, $4,100 in all, mostly food and beverage. Lists Pomona Valley Hospital Medical Center as a hospital affiliation.
Overview
| NPI | 1790728749 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Jan 4, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A50496 | 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 | 258 |
|---|---|
| Services billed | 2,013 across 35 procedure codes |
| Paid by Medicare | $139,303 |
Part D prescriptions in 2024
| Prescriptions (claims) | 14,285 · 27,316 30-day fills |
|---|---|
| Patients | 630 |
| Total drug cost | $3,682,610 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Family Practice |
| Telehealth | Offers telehealth |
Hospital affiliation
- Pomona Valley Hospital Medical CenterPomona, CA
Other facilities
- Ideal Choice Home HealthHome health agency · Sherman Oaks, CA
Industry payments (Open Payments)
- 2025$4,100 · 177 payments from 28 companies
- 2024$5,644 · 197 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $1,101 | 53 |
| Amgen Inc. | $428.20 | 17 |
| Pfizer Inc. | $257.40 | 11 |
| Abbott Laboratories | $249.62 | 6 |
| Phathom Pharmaceuticals, Inc. | $225.30 | 5 |
What the 2025 payments were for
- Food and Beverage$4,100 · 177 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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