Chien-Shing Chen, M.D.
NPI 1073542692ActiveIndividual· Internal Medicine, Medical Oncology· Loma Linda, CA
Internal Medicine, Medical Oncology (M.D.) with Faculty Physicians and Surgeons of Llusm, practicing in Loma Linda, California. Their prescriptions cost Medicare Part D more than their services did: $3,353,885 for 613 claims, against $31,833 paid for services in 2024. Avyxa Pharma, LLC was the largest of 4 companies reporting payments in 2025, $5,387 in all, mostly speaking and faculty fees. Lists Loma Linda University Medical Center as a hospital affiliation.
Overview
| NPI | 1073542692 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 3, 2006 |
| Last updated in NPPES | Jul 16, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | A66192 | 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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 167 |
|---|---|
| Services billed | 495 across 14 procedure codes |
| Paid by Medicare | $31,833 |
Part D prescriptions in 2024
| Prescriptions (claims) | 613 · 685 30-day fills |
|---|---|
| Patients | 76 |
| Total drug cost | $3,353,885 |
| Generic share | 62% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
Hospital affiliation
- Loma Linda University Medical CenterLoma Linda, CA
Industry payments (Open Payments)
- 2025$5,387 · 10 payments from 4 companies
- 2024$807.72 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Avyxa Pharma, LLC | $4,496 | 7 |
| Daiichi Sankyo Inc. | $650.00 | 1 |
| Astellas Pharma US Inc | $124.99 | 1 |
| Blueprint Medicines Corporation | $116.67 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2,000 · 1 payment
- Travel and Lodging$1,989 · 3 payments
- Food and Beverage$747.96 · 5 payments
- Consulting Fee$650.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Medical Oncology providers in Loma Linda
- 1235369703
- 1659307015
- 1346402286
All Internal Medicine, Medical Oncology providers in California →