Physician

Chien C. Ou, MD

According to 2025 Medicare claims, Chien Ou, MD (NPI: 1790916385) practices ophthalmology in the Williamsport, PA market, with the plurality of this provider's patient population coming from Lycoming, PA. This provider's primary affiliated billing organization is BERNSTEIN, HILLIKER, HARTZELL EYE CENTER, LLP (NPI: 1942390745; TIN: 232196399) and primary practice location at 17810-9260.

Ou's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,201 traditional Medicare patients, billed 3,555 HCPCS/CPT codes, and received $312,722 in Medicare payments. The top billing code was 92014 (Established patient complete exam of visual system). Part D data shows 2,977 prescription claims across 656 beneficiaries totaling $344,035 in drug costs, led by Rhopressa (Netarsudil Mesylate). 2021 DME data shows 42 claims. Open Payments data shows 4 records totaling $378. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing has risen steadily, from $74,905 to $312,722. Similarly, Part D prescription costs have moved from a lower plateau to a higher plateau, from $45,525 to $344,035. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.