Dr. Marcus E. Semel, MD

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

Dr. Semel's NPI, 1124226766, was assigned on July 5, 2007. Dr. Semel graduated from University of Rochester School of Medicine and Dentistry in 2005. Dr. Semel holds Massachusetts license 225835.

Dr. Semel'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. Semel's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Semel is also affiliated with Brigham and Women's Faulkner Hospital. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Dr. Semel to 2 more hospitals, 1 home health agency, 1 hospital outpatient department and 1 medical group, each named with a free account.

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

Surgery is Dr. Semel's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Semel is licensed in Massachusetts.

CMS data shows 1,556 Medicare services from Dr. Semel across 25 procedure codes in 2024, for 702 Medicare patients. Medicare paid $159,905 for them.

CMS counts 702 Medicare patients who saw Dr. Semel in 2026. The largest group is 75 to 84, with 319 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.99, 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. Semel's median patient age at 72, with 45% women.

In 2026, Dr. Semel wrote 142 Medicare Part D claims for 59 patients. 87% of them were for generic drugs. CMS names the drug for 54 of them, across 3 drugs with 11 or more claims each, at $10,329 in total drug cost. In 2023, CMS named 72 claims across 4 drugs.

Dr. Semel accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Semel as offering telehealth. CMS counts 23 procedures of leg revascularization (restoring blood flow) by Dr. Semel, more than 83% of the clinicians it reports for that procedure.

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

Dmand AI links 16 papers to Dr. Semel, published from 2010 to 2022. 2013 was the busiest year, with 3. The most frequent topics are Ambulatory Care and Medicare. Dr. Semel has published most often in J Vasc Surg. Dr. Semel's most frequent co-authors are Atul Gawande, MD, Louis L. Nguyen, MBA, MD, MPH and Michael Belkin, MD.

Dmand AI links Dr. Semel to 1 clinical trial. Conditions studied include Gangrene and Chronic Limb-Threatening Ischemia.

CMS Open Payments shows 21 general payments to Dr. Semel from 9 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 68% of the total. Silk Road Medical, Inc. paid the most, $1,002.

Dr. Semel graduated from University of Rochester School of Medicine and Dentistry in 2005.