Derek Jen Kon Louie, BS, MS, OD
NPI 1235281379ActiveIndividual· Optometrist· Portland, OR
Optometrist (BS, MS, OD) in Portland, Oregon, trained at Southern California College of Optometry (class of 2005). In 2024 Medicare paid $22,202 for 234 patients, and Part D covered 81 of their prescriptions, 64% of them generic. Tarsus Pharmaceuticals, Inc. reported $146.92 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1235281379 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | BS, MS, OD |
| Sole proprietor | No |
| NPI issued | Jan 17, 2007 |
| Last updated in NPPES | Feb 24, 2022 |
| Certified by provider | Feb 24, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 3196ATI | OR |
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 - Optometry (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 234 |
|---|---|
| Services billed | 438 across 23 procedure codes |
| Paid by Medicare | $22,202 |
Part D prescriptions in 2024
| Prescriptions (claims) | 81 · 144 30-day fills |
|---|---|
| Patients | 34 |
| Total drug cost | $2,953 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | Southern California College of Optometry |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Optometry |
Medical group
- University Professional ServicesBeaverton, OR · 1,724 clinicians
Hospital affiliation
- Ohsu Hospital and ClinicsPortland, OR
Industry payments (Open Payments)
- 2025$146.92 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tarsus Pharmaceuticals, Inc. | $146.92 | 1 |
What the 2025 payments were for
- Food and Beverage$146.92 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 293 optometrists in Portland · All optometrists in Oregon