Dr. Mazen Zaarour, MD

Dr. Zaarour practices at AdventHealth Orlando in Orlando, Florida, part of AdventHealth.

Dr. Zaarour's NPI, 1437599875, was assigned on June 30, 2013. Dr. Zaarour holds Alabama license 37907.

Dr. Zaarour's primary practice is AdventHealth Orlando, at 601 E Rollins St, Orlando, FL 32803 in Orange County. The practice phone is (407) 303-1976.

Dr. Zaarour's primary practice is AdventHealth Orlando in Orlando, Florida, part of AdventHealth. Dr. Zaarour is also affiliated with Southeast Health Medical Center. The medical group on file is AdventHealth Medical Group. Dmand AI also links Dr. Zaarour to 2 more group practices and clinics and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zaarour practices, 4 sites in all. Vendor and product names are available with a free account.

Hematology and oncology is Dr. Zaarour's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Zaarour is licensed in Alabama.

Dmand AI lists breast cancer, chronic anemia, chronic embolism thrombosis, chronic leukemia, lung cancer, lymphoma, multiple myeloma and prostate cancer among the conditions Dr. Zaarour treats.

CMS data shows 539 Medicare services from Dr. Zaarour across 7 procedure codes in 2024, for 182 Medicare patients. Medicare paid $42,523 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 182 Medicare patients who saw Dr. Zaarour in 2024. The largest group is 65 to 74, with 77 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.94, 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. Zaarour's median patient age at 70, with 51% women.

In 2024, Dr. Zaarour wrote 929 Medicare Part D claims for 158 patients. 82% of them were for generic drugs. CMS names the drug for 780 of them, across 29 drugs with 11 or more claims each, at $2,616,731 in total drug cost. In 2023, CMS named 688 claims across 21 drugs.

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

Dmand AI links 14 papers to Dr. Zaarour, published from 2015 to 2020. 2015 was the busiest year, with 7. The most frequent topics are Antineoplastic Agents, Carcinoma, Non-Small-Cell Lung and Lung Neoplasms. Dr. Zaarour has published most often in Cureus. Dr. Zaarour's most frequent co-authors are Chanudi K. Weerasinghe, MD, Elias Moussaly, MD and Bassel Nazha, MD, MPH.

CMS Open Payments shows 677 general payments to Dr. Zaarour from 61 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Novartis Pharmaceuticals Corporation paid the most, $990.

Dr. Zaarour is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.