Dr. Jonathan Eric Leeman, MD

Dr. Leeman practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.

Dr. Leeman's NPI, 1871835231, was assigned on March 25, 2013. Dr. Leeman graduated from University of Pittsburgh School of Medicine in 2013. Dr. Leeman holds Massachusetts license 274578.

Dr. Leeman's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.

Dr. Leeman's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Leeman is also affiliated with Massachusetts General Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Leeman to 3 more hospitals, 3 medical groups and 1 hospital outpatient department, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leeman practices, 6 sites in all. Vendor and product names are available with a free account.

Radiation oncology is Dr. Leeman's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Leeman's licenses on file in 2 states: Massachusetts and New York.

CMS data shows 3,011 Medicare services from Dr. Leeman across 14 procedure codes in 2024, for 313 Medicare patients. Medicare paid $245,790 for them.

CMS counts 313 Medicare patients who saw Dr. Leeman in 2024. The largest group is 65 to 74, with 165 patients. 75% of them have cancer, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.66, 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. Leeman's median patient age at 74, with 20% women.

In 2024, Dr. Leeman wrote 74 Medicare Part D claims for 49 patients. 95% of them were for generic drugs. CMS names the drug for 63 of them, across 3 drugs with 11 or more claims each, at $508 in total drug cost. In 2023, CMS named 62 claims across 2 drugs.

Dr. Leeman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Leeman as offering telehealth.

Dmand AI links 75 papers to Dr. Leeman, published from 2011 to 2025. 2024 was the busiest year, with 9. The most frequent topics are Prostatic Neoplasms, Radiosurgery and Radiotherapy Planning, Computer-Assisted. Dr. Leeman has published most often in Int J Radiat Oncol Biol Phys. Dr. Leeman's most frequent co-authors are Paul L. Nguyen, MD, Nadeem Riaz, MD and Nancy Lee, MD.

Dmand AI links Dr. Leeman to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Mesothelioma and Neoplasms, Mesothelial.

CMS Open Payments shows 8 general payments to Dr. Leeman from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 53% of the total. IBA Proton Therapy, Inc. paid the most, $1,273.

Dr. Leeman graduated from University of Pittsburgh School of Medicine in 2013.