Dr. Carlos F. Chang, MD

Dr. Chang practices at Carlos Chang MD PA in Tavares, Florida.

Dr. Chang's NPI, 1922005016, was assigned on July 5, 2005. Dr. Chang graduated from National University of Federico Villarreal Faculty of Medicine in 1990. Dr. Chang holds Florida license ME71903.

Dr. Chang's primary practice is Carlos Chang MD PA, at 1862 Mayo Dr, Tavares, FL 32778 in Lake County. The practice phone is (352) 343-0053.

Dr. Chang's primary practice is Carlos Chang MD PA in Tavares, Florida. Dr. Chang is also affiliated with AdventHealth Waterman. The medical group on file is CORA Physical Therapy, Spanish Springs. Dmand AI also links Dr. Chang to 2 more hospitals, 5 home health agencies, 3 group practices and clinics, 2 skilled nursing facilities, 2 medical groups, 1 physician office and 1 hospice, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 15 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 board certified in geriatric medicine by the American Board of Internal Medicine. Dmand AI has Dr. Chang's licenses on file in 2 states: Florida and Illinois.

Dmand AI lists acid reflux, acute diabetes, acute respiratory failure, acute skin infection, acute stomach ulcer, alzheimer's disease, aneurysm and arteritis among the conditions Dr. Chang treats.

CMS data shows 6,076 Medicare services from Dr. Chang across 33 procedure codes in 2024, for 785 Medicare patients. Medicare paid $376,794 for them.

CMS counts 785 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 343 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.85, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 79, with 60% women.

In 2024, Dr. Chang wrote 9,514 Medicare Part D claims for 785 patients. 86% of them were for generic drugs. CMS names the drug for 8,648 of them, across 144 drugs with 11 or more claims each, at $556,947 in total drug cost. In 2023, CMS named 9,042 claims across 152 drugs.

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

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 34 general payments to Dr. Chang from 15 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $415.

Dmand AI lists 1 award for Dr. Chang, most recently CMS Stage 1 EHR in 2013.

Dr. Chang graduated from National University of Federico Villarreal Faculty of Medicine in 1990.

Dr. Chang is in network with 13 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.