Hichang J. Choi, MD
NPI 1245308238ActiveIndividual· Internal Medicine· Los Alamitos, CA
Internal Medicine (MD) in Los Alamitos, California, licensed in CA, with an NPI issued in November 2006. Their prescriptions cost Medicare Part D more than their services did: $304,382 for 4,538 claims, against $24,793 paid for services in 2024. Daiichi Sankyo Inc. was the largest of 16 companies reporting payments in 2025, $858.47 in all, mostly food and beverage. Lists Uci Health-Orange as a hospital affiliation.
Overview
| NPI | 1245308238 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Nov 30, 2006 |
| Last updated in NPPES | Sep 16, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A75490 | 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 | 90 |
|---|---|
| Services billed | 385 across 12 procedure codes |
| Paid by Medicare | $24,793 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,538 · 10,647 30-day fills |
|---|---|
| Patients | 319 |
| Total drug cost | $304,382 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$858.47 · 34 payments from 16 companies
- 2024$288.17 · 13 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $152.08 | 7 |
| Merck Sharp & Dohme LLC | $126.42 | 5 |
| Incyte Corporation | $108.50 | 4 |
| Caris Mpi, Inc. | $85.11 | 3 |
| Janssen Biotech, Inc. | $69.83 | 3 |
What the 2025 payments were for
- Food and Beverage$858.47 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 57 internal medicine physicians in Los Alamitos · All internal medicine physicians in California