Joseph Sik Pak, OD
NPI 1073192100ActiveIndividual· Optometrist· Riverside, CA
Optometrist (OD) with Retina Institute of California Medical Group, A California Medical Par, practicing in Riverside, California. Their prescriptions cost Medicare Part D more than their services did: $104,634 for 1,139 claims, against $11,575 paid for services in 2024. Tarsus Pharmaceuticals, Inc. reported $38.02 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1073192100 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Apr 6, 2021 |
| Last updated in NPPES | Sep 5, 2026 |
| Certified by provider | Sep 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | 34773TLG | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 85 |
|---|---|
| Services billed | 144 across 11 procedure codes |
| Paid by Medicare | $11,575 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,139 · 1,912 30-day fills |
|---|---|
| Patients | 335 |
| Total drug cost | $104,634 |
| Generic share | 54% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Optometry |
Medical group
- Retina Institute of California Medical Group, A California Medical ParPalm Desert, CA · 77 clinicians
Industry payments (Open Payments)
- 2025$38.02 · 1 payment from 1 company
- 2024$47.57 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tarsus Pharmaceuticals, Inc. | $38.02 | 1 |
What the 2025 payments were for
- Food and Beverage$38.02 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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