Hoyee Chan, MD
NPI 1336208297ActiveIndividual· Internal Medicine· Buffalo Grove, IL
Internal Medicine (MD) in Buffalo Grove, Illinois, licensed in IL, with an NPI issued in December 2006. Their prescriptions cost Medicare Part D more than their services did: $878,725 for 5,585 claims, against $184,974 paid for services in 2024.
Overview
| NPI | 1336208297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 7, 2006 |
| Last updated in NPPES | Oct 13, 2020 |
| Certified by provider | Oct 13, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-070726 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 363 |
|---|---|
| Services billed | 2,562 across 43 procedure codes |
| Paid by Medicare | $184,974 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,585 · 14,696 30-day fills |
|---|---|
| Patients | 520 |
| Total drug cost | $878,725 |
| Generic share | 85% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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