Lorien Sunhye Ahn, MD
NPI 1033542683ActiveIndividual· Internal Medicine· Santa Monica, CA
Internal Medicine (MD) in Santa Monica, California, trained at Mercer University School of Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $121,062 for 1,272 claims, against $48,126 paid for services in 2024. Exact Sciences Corporation was the largest of 2 companies reporting payments in 2025, $48.52 in all, mostly food and beverage.
Overview
| NPI | 1033542683 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 19, 2013 |
| Last updated in NPPES | Jun 30, 2025 |
| Certified by provider | Jun 30, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A159674 | 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 | 152 |
|---|---|
| Services billed | 758 across 24 procedure codes |
| Paid by Medicare | $48,126 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,272 · 2,997 30-day fills |
|---|---|
| Patients | 179 |
| Total drug cost | $121,062 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Mercer University School of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliation
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
Industry payments (Open Payments)
- 2025$48.52 · 2 payments from 2 companies
- 2024$120.67 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $25.18 | 1 |
| Medtronic, Inc. | $23.34 | 1 |
What the 2025 payments were for
- Food and Beverage$48.52 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 197 internal medicine physicians in Santa Monica · All internal medicine physicians in California