Kwok Leung Chung, M.D.
NPI 1760490627ActiveIndividual· Internal Medicine, Gastroenterology· Monterey Park, CA
Internal Medicine, Gastroenterology (M.D.) in Monterey Park, California, trained at Albert Einstein College of Medicine of Yeshiva University (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $2,121,489 for 4,730 claims, against $104,097 paid for services in 2024. Gilead Sciences, Inc. was the largest of 8 companies reporting payments in 2025, $1,019 in all, mostly food and beverage.
Overview
| NPI | 1760490627 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 4, 2006 |
| Last updated in NPPES | Jun 10, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G49584 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 534 |
|---|---|
| Services billed | 1,166 across 11 procedure codes |
| Paid by Medicare | $104,097 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,730 · 8,267 30-day fills |
|---|---|
| Patients | 1,060 |
| Total drug cost | $2,121,489 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | Albert Einstein College of Medicine of Yeshiva University |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Usc Arcadia HospitalArcadia, CA
Industry payments (Open Payments)
- 2025$1,019 · 43 payments from 8 companies
- 2024$1,146 · 50 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $286.94 | 11 |
| Madrigal Pharmaceuticals | $219.17 | 9 |
| Aimmune Therapeutics, Inc. | $212.27 | 8 |
| Abbvie Inc. | $139.38 | 9 |
| Ardelyx, Inc. | $86.25 | 3 |
What the 2025 payments were for
- Food and Beverage$1,019 · 43 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Monterey Park
- 1023452620
- 1013943554
- 1518411214
- 1912180969
- 1528459385
- 1073020186
- 1710909627
- 1528257862
- 1053343434
- 1801815527
- 1497746960
- 1902831894
All Internal Medicine, Gastroenterology providers in California →