Physician

Aileen P Oandasan, MD

According to 2025 Medicare claims, Aileen Oandasan, MD (NPI: 1376601815) practices psychiatry in the Johnstown, PA market, with the plurality of this provider's patient population coming from Cambria, PA. This provider's primary affiliated billing organization is NULTON DIAGNOSTIC & TREATMENT CENTER, PC (NPI: 1073573010; TIN: 232889239) and primary practice location at 15904-2833. Oandasan is affiliated with the Physician Partners of Western PA LLC (ACO ID: A3547) and AdvantagePoint Health Alliance - Laurel Highlands, LLC (ACO ID: A4657), participating under the MSSP model.

Oandasan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 92 traditional Medicare patients, billed 330 HCPCS/CPT codes, and received $25,150 in Medicare payments. The top billing code was 90837 (Psychotherapy, 1 hour). Part D data shows 2,767 prescription claims across 245 beneficiaries totaling $292,292 in drug costs, led by Invega Sustenna (Paliperidone Palmitate). Open Payments data shows 59 records totaling $1,084. 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 moved up and down with repeated peaks and valleys, starting at $31,474 and ending at $25,150. Concurrently, Part D prescription costs have moved from a lower plateau to a higher plateau, from $67,651 to $292,292. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.