Nancy Tsui, OD
NPI 1841785037ActiveIndividual· Optometrist· Anaheim, CA
Optometrist (OD) with Retina Institute of California Medical Group, A California Medical Par, practicing in Anaheim, California. Their prescriptions cost Medicare Part D more than their services did: $175,233 for 1,476 claims, against $6,657 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $303.43 in all, mostly food and beverage.
Overview
| NPI | 1841785037 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Jun 29, 2018 |
| Last updated in NPPES | Jan 25, 2022 |
| Certified by provider | Jan 25, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT33944-TLG | 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 - Optometry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 69 |
|---|---|
| Services billed | 81 across 6 procedure codes |
| Paid by Medicare | $6,657 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,476 · 2,701 30-day fills |
|---|---|
| Patients | 434 |
| Total drug cost | $175,233 |
| Generic share | 49% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Optometry |
Medical group
- Retina Institute of California Medical Group, A California Medical ParPalm Desert, CA · 77 clinicians
Industry payments (Open Payments)
- 2025$303.43 · 7 payments from 2 companies
- 2024$93.65 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $188.66 | 6 |
| Alcon Vision LLC | $114.77 | 1 |
What the 2025 payments were for
- Food and Beverage$303.43 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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