Chuck Chan, DO
NPI 1841877222ActiveIndividual· Emergency Medicine· Orange, CA
Emergency Medicine (DO) with Regents of the University of, practicing in Orange, California. 380 Medicare patients in 2024, $54,406 paid; nearly all of their 183 Part D prescriptions were generic (97%). Genentech USA, Inc. reported $24.16 in payments in 2024, mostly food and beverage. Lists Uci Health-Orange as a hospital affiliation.
Overview
| NPI | 1841877222 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 24, 2021 |
| Last updated in NPPES | Jun 3, 2025 |
| Certified by provider | Jun 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 20A23675 | CA |
| Emergency Medicine | 207P00000X | 125.078109 | IL |
| Emergency Medicine | 207P00000X | 036.167218 | IL |
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 - Emergency Medicine (CA); Practitioner - Emergency Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 380 |
|---|---|
| Services billed | 508 across 24 procedure codes |
| Paid by Medicare | $54,406 |
Part D prescriptions in 2024
| Prescriptions (claims) | 183 · 190 30-day fills |
|---|---|
| Patients | 131 |
| Total drug cost | $5,429 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical group
- Regents of the University ofOrange, CA · 129 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2024$24.16 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Genentech USA, Inc. | $24.16 | 1 |
What the 2024 payments were for
- Food and Beverage$24.16 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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