Physician

Han-Chih Chang, M.D.

According to 2025 Medicare claims, Han-Chih Chang, M.D. (NPI: 1790776755) practices radiation oncology in the Oklahoma City, OK market, with the plurality of this provider's patient population coming from Oklahoma, OK. This provider's primary affiliated billing organization is OKLAHOMA PROTON CENTER LLC (NPI: 1114408762; TIN: 611906834) and primary practice location at 73142-2015. Chang is affiliated with the Mercy Health ACO, LLC (ACO ID: A2616), Prairie Vista Care Organization (ACO ID: A3578), Saint Francis Accountable Health Alliance LLC (ACO ID: A5372), and Vytalize Health KS 25 LLC (ACO ID: A5671), participating under the MSSP model.

Chang's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,218 traditional Medicare patients, billed 14,167 HCPCS/CPT codes, and received $2,966,465 in Medicare payments. The top billing code was 77523 (Intermediate proton beam radiation treatment). Part D data shows 552 prescription claims across 194 beneficiaries totaling $10,285 in drug costs, led by Tolterodine Tartrate Er (Tolterodine Tartrate). Open Payments data shows 31 records totaling $15,937. 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 from a lower plateau to a higher plateau, from $142,460 to $2,966,465. Similarly, Part D prescription costs have risen steadily, from $4,989 to $10,285. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.