Christine Hyunsun Park, MD
NPI 1003963364ActiveIndividual· Internal Medicine, Rheumatology· Laguna Beach, CA
Internal Medicine, Rheumatology (MD) in Laguna Beach, California, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $1,088,106 for 1,109 claims, against $38,608 paid for services in 2024. Janssen Biotech, Inc. was the largest of 11 companies reporting payments in 2025, $1,167 in all, mostly food and beverage.
Overview
| NPI | 1003963364 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jan 5, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | G073810 | CA |
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 - Rheumatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 163 |
|---|---|
| Services billed | 437 across 13 procedure codes |
| Paid by Medicare | $38,608 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,109 · 1,774 30-day fills |
|---|---|
| Patients | 137 |
| Total drug cost | $1,088,106 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Rheumatology |
| Telehealth | Offers telehealth |
Hospital affiliation
- Providence Mission HospitalMission Viejo, CA
Industry payments (Open Payments)
- 2025$1,167 · 44 payments from 11 companies
- 2024$1,157 · 60 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $441.83 | 16 |
| Abbvie Inc. | $153.30 | 7 |
| Lilly USA, LLC | $124.37 | 1 |
| Astrazeneca Pharmaceuticals LP | $96.53 | 4 |
| Glaxosmithkline, LLC. | $94.86 | 4 |
What the 2025 payments were for
- Food and Beverage$1,068 · 42 payments
- Education$98.84 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records