Sian E. Liem, OD
NPI 1275522948ActiveIndividual· Optometrist· Scarborough, ME
Optometrist (OD) in Scarborough, Maine, trained at University of California - School of Optometry (class of 1996). In 2024 Medicare paid $39,071 for 381 patients, and Part D covered 339 of their prescriptions, 72% of them generic. Coopervision Inc. reported $109.17 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1275522948 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | OD |
| Sole proprietor | No |
| NPI issued | Oct 17, 2005 |
| Last updated in NPPES | Jan 6, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Optometrist Primary | 152W00000X | OPT811 | ME |
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 (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 381 |
|---|---|
| Services billed | 2,614 across 13 procedure codes |
| Paid by Medicare | $39,071 |
Part D prescriptions in 2024
| Prescriptions (claims) | 339 · 720 30-day fills |
|---|---|
| Patients | 123 |
| Total drug cost | $56,977 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | University of California - School of Optometry |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Optometry |
Medical group
- Casco Bay Eyecare LLCSouth Portland, ME · 8 clinicians
Industry payments (Open Payments)
- 2025$109.17 · 1 payment from 1 company
- 2024$41.54 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Coopervision Inc. | $109.17 | 1 |
What the 2025 payments were for
- Food and Beverage$109.17 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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