Physician

Emmanuel Yih-Herng Chang, MD/PHD

According to 2025 Medicare claims, Emmanuel Chang, MD/PHD (NPI: 1083877740) practices ophthalmology in the Houston-Pasadena-The Woodlands, TX market, with the plurality of this provider's patient population coming from Harris, TX. This provider's primary affiliated billing organization is RETINA AND VITREOUS OF TEXAS PLLC (NPI: 1003892597; TIN: 760534711) and primary practice location at 77701-2437. Chang is affiliated with the American Choice Healthcare, LLC (ACO ID: D0086), participating under the REACH model.

Chang's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 683 traditional Medicare patients, billed 64,926 HCPCS/CPT codes, and received $2,680,698 in Medicare payments. The top billing code was 67028 (Injection of drug into eye). Part D data shows 1,240 prescription claims across 282 beneficiaries totaling $61,127 in drug costs, led by Simbrinza (Brinzolamide/Brimonidine Tart). Open Payments data shows 109 records totaling $291,516. 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 $973,637 to $2,680,698. Similarly, Part D prescription costs have moved from a lower plateau to a higher plateau, from $43,425 to $61,127. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.