Chienwei Timothy Chen, MD
NPI 1992795256ActiveIndividual· Internal Medicine· Irvine, CA
Internal Medicine (MD) in Irvine, California, trained at Boston University School of Medicine (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $676,638 for 5,361 claims, against $46,814 paid for services in 2024. Abbvie Inc. was the largest of 14 companies reporting payments in 2025, $1,566 in all, mostly food and beverage.
Overview
| NPI | 1992795256 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 26, 2005 |
| Last updated in NPPES | Oct 13, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A79035 | 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 | 209 |
|---|---|
| Services billed | 4,002 across 44 procedure codes |
| Paid by Medicare | $46,814 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,361 · 13,388 30-day fills |
|---|---|
| Patients | 514 |
| Total drug cost | $676,638 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Boston University School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Memorialcare Medical FoundationLong Beach, CA · 566 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
Other facilities
- Hoag Home HealthHome health agency · Newport Beach, CA
Industry payments (Open Payments)
- 2025$1,566 · 65 payments from 14 companies
- 2024$2,005 · 66 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $300.50 | 12 |
| Novo Nordisk Inc | $239.27 | 10 |
| Astrazeneca Pharmaceuticals LP | $225.51 | 9 |
| Lilly USA, LLC | $150.36 | 6 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $140.46 | 6 |
What the 2025 payments were for
- Food and Beverage$1,566 · 65 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 207 internal medicine physicians in Irvine · All internal medicine physicians in California