Dr. Robert A. Chang, MD

Dr. Chang practices at Henry Ford Physician Partners in Mount Clemens, Michigan.

Dr. Chang's NPI, 1093712093, was assigned on July 5, 2005. Dr. Chang holds Michigan license 4301054727.

Dr. Chang's primary practice is Henry Ford Physician Partners, at 133 S Main St, Mount Clemens, MI 48043 in Macomb County. The practice phone is (586) 468-1600.

Dr. Chang's primary practice is Henry Ford Physician Partners in Mount Clemens, Michigan. Dr. Chang is also affiliated with Henry Ford Hospital. The medical group on file is Henry Ford Macomb Hospital. Dmand AI also links Dr. Chang to 1 more hospital, 3 group practices and clinics and 3 medical groups, 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.

Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Michigan.

CMS data shows 914 Medicare services from Dr. Chang across 12 procedure codes in 2024, for 258 Medicare patients. Medicare paid $40,329 for them. Every service was in an office.

CMS counts 258 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 99 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 67, with 43% women.

In 2024, Dr. Chang wrote 11,614 Medicare Part D claims for 642 patients. 86% of them were for generic drugs. CMS names the drug for 10,625 of them, across 137 drugs with 11 or more claims each, at $992,383 in total drug cost. In 2023, CMS named 10,757 claims across 150 drugs.

Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 10 papers to Dr. Chang, published from 2011 to 2025. 2018 was the busiest year, with 2. The most frequent topics are Bacteremia, Michigan and Patient Discharge. Dr. Chang has published most often in Infect Control Hosp Epidemiol. Dr. Chang's most frequent co-authors are Carol Elizabeth Chenoweth, MD, Michael Greene, DO and Megan Rose Mack, MD.

CMS Open Payments shows 306 general payments to Dr. Chang from 40 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Amgen Inc. paid the most, $1,124.