Michael Youngjun Choi, M.D.
NPI 1912181173ActiveIndividual· Internal Medicine, Hematology & Oncology· San Diego, CA
Internal Medicine, Hematology & Oncology (M.D.) with Regents of the University of California, practicing in San Diego, California. Their prescriptions cost Medicare Part D more than their services did: $9,570,368 for 1,163 claims, against $70,201 paid for services in 2024. Rigel Pharmaceuticals, Inc. was the largest of 4 companies reporting payments in 2025, $355.60 in all, mostly food and beverage. Lists Eisenhower Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1912181173 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 24, 2007 |
| Last updated in NPPES | Nov 12, 2025 |
| Certified by provider | Nov 12, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A100104 | 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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 335 |
|---|---|
| Services billed | 1,219 across 23 procedure codes |
| Paid by Medicare | $70,201 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,163 · 1,582 30-day fills |
|---|---|
| Patients | 166 |
| Total drug cost | $9,570,368 |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of CaliforniaSan Diego, CA · 2,089 clinicians
Hospital affiliations
- Eisenhower Medical CenterRancho Mirage, CA
- Uc San Diego Health Hillcrest - Hillcrest Med CtrSan Diego, CA
Industry payments (Open Payments)
- 2025$355.60 · 6 payments from 4 companies
- 2024$415.83 · 6 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Rigel Pharmaceuticals, Inc. | $175.51 | 2 |
| Astrazeneca Pharmaceuticals LP | $80.76 | 2 |
| Medexus Pharma, Inc. | $51.24 | 1 |
| Beone Medicines USA, Inc. | $48.09 | 1 |
What the 2025 payments were for
- Food and Beverage$355.60 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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