Dr. Han-Chih Chang, MD

Dr. Chang practices at Oklahoma Proton Center in Oklahoma City, Oklahoma.

Dr. Chang's NPI, 1790776755, was assigned on October 31, 2005. Dr. Chang graduated from University Of Michigan Medical School in 1995. Dr. Chang's Tennessee license number on file is 57231.

Dr. Chang's primary practice is Oklahoma Proton Center, at 5901 W Memorial Rd, Oklahoma City, OK 73142 in Oklahoma County. The practice phone is (918) 798-9160.

Dr. Chang's primary practice is Oklahoma Proton Center in Oklahoma City, Oklahoma. Dr. Chang is also affiliated with INTEGRIS Health Baptist Medical Center. The medical group on file is Warren Clinic. Dmand AI also links Dr. Chang to 4 more hospitals and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 5 sites in all. Vendor and product names are available with a free account.

Radiation oncology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Chang is board certified in radiation oncology by the American Board of Radiology. Dmand AI has Dr. Chang's licenses on file in 8 states: Tennessee, Illinois, Oklahoma, Arkansas, Kansas, Texas, Pennsylvania and Michigan.

Dmand AI lists bladder cancer radiation, breast cancer radiation, cancer radiation-upper GI, colorectal cancer radiation, head & neck cancer radiation, lung cancer radiation, lymphoma radiation and pancreatic cancer radiation among the conditions Dr. Chang treats.

CMS data shows 14,011 Medicare services from Dr. Chang across 54 procedure codes in 2024, for 1,218 Medicare patients. Medicare paid $2,918,358 for them. Every service was in an office.

CMS counts 1,218 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 607 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 72, with 15% women.

In 2024, Dr. Chang wrote 552 Medicare Part D claims for 194 patients. 95% of them were for generic drugs. CMS names the drug for 480 of them, across 11 drugs with 11 or more claims each, at $8,782 in total drug cost. In 2023, CMS named 324 claims across 8 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Chang for performance year 2024, reported individually. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth.

Dmand AI links Dr. Chang to 3 clinical trials. 2 are still active or recruiting. Conditions studied include Prostatic Neoplasms, Prostatic Diseases and Carcinoma, Non-Small-Cell Lung. Proton Collaborative Group sponsors the most, 2.

CMS Open Payments shows 117 general payments to Dr. Chang from 16 drug and device companies from 2017 to 2025. Speaker and faculty fees make up the largest share, 46% of the total. Teleflex LLC paid the most, $30,389.

Dmand AI lists 5 awards for Dr. Chang, most recently Regional Top Doctor in 2017.

Dr. Chang graduated from University Of Michigan Medical School in 1995. Dr. Chang is a member of ASTRO and ASCO.

Dr. Chang is in network with 21 carriers, including Aetna, Cigna and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.