Surgeon profile
Sian Liem, OD
Optometry · Scarborough, ME 04074NPI 1275522948
Database refreshed July 2026Live NPPES registry· Industry payments CY2025ⓘ sources
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Tracked procedure volumes
Latest federal claims release with year-over-year momentum. Eight device-heavy specialties tracked — more coming.
1,972 Medicare cases/yr
18 patients
1 procedure
| Procedure | Cases | Trend | Patients |
|---|---|---|---|
| Cataract Surgery with IOL CPT 66984 | 1,972 | ▲ +28% | 18 |
Industry relationships
CMS Open Payments, CY2025 general payments (published June 2026) — who already pays this surgeon.
Pulling CY2025 industry payments + 7-year history…