Chang-Kun Charles Choi, D.O.
NPI 1760577241ActiveIndividual· Internal Medicine· Tucson, AZ
Internal Medicine (D.O.) in Tucson, Arizona, trained at Midwestern University College of Dental Medicine, Glendale (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $546,575 for 1,739 claims, against $121,992 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 21 companies reporting payments in 2025, $1,274 in all, mostly food and beverage.
Overview
| NPI | 1760577241 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Oct 3, 2006 |
| Last updated in NPPES | Mar 2, 2022 |
| Certified by provider | Mar 2, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 286086 | AZ |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 4476 | AZ |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 4476 | AZ |
| Internal Medicine, Sleep Medicine | 207RS0012X | 4476 | AZ |
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 - Pulmonary Disease (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 577 |
|---|---|
| Services billed | 1,978 across 37 procedure codes |
| Paid by Medicare | $121,992 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,739 · 2,422 30-day fills |
|---|---|
| Patients | 341 |
| Total drug cost | $546,575 |
| Generic share | 43% of claims |
Education and affiliations
| Medical school | Midwestern University College of Dental Medicine, Glendale |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine, Sleep Medicine |
Medical groups
- Tmc Medical NetworkTucson, AZ · 281 clinicians
- TmconeGreen Valley, AZ · 96 clinicians
Hospital affiliation
- Tucson Medical CenterTucson, AZ
Industry payments (Open Payments)
- 2025$1,274 · 61 payments from 21 companies
- 2024$790.24 · 41 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $206.84 | 15 |
| Merck Sharp & Dohme LLC | $115.65 | 5 |
| Regeneron Healthcare Solutions, Inc. | $93.04 | 4 |
| Grifols USA, LLC | $90.23 | 4 |
| Boston Scientific Corporation | $83.70 | 1 |
What the 2025 payments were for
- Food and Beverage$1,274 · 61 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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