Dr. Thomas An, MD

Dr. An practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.

Dr. An's NPI, 1912427113, was assigned on June 20, 2017. Dr. An graduated from Vanderbilt University School of Medicine in 2017. Dr. An holds Massachusetts license 281918.

Dr. An's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.

Dr. An's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. An is also affiliated with Newton-Wellesley Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. An to 2 more group practices and clinics, 1 community health center and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. An practices, 5 sites in all. Vendor and product names are available with a free account.

Diagnostic radiology is Dr. An's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. An is licensed in Massachusetts.

CMS data shows 458 Medicare services from Dr. An across 16 procedure codes in 2024, for 408 Medicare patients. Medicare paid $23,338 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 408 Medicare patients who saw Dr. An in 2024. The largest group is 65 to 74, with 172 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 3.00, 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. An's median patient age at 69, with 39% women.

In 2018, Dr. An wrote 14 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $52 in total drug cost. In 2017, CMS named 12 claims across 1 drug.

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

Dmand AI links 15 papers to Dr. An, published from 2020 to 2025. 2020 was the busiest year, with 5. The most frequent topics are COVID-19, Embolization, Therapeutic and Endovascular Procedures. Dr. An has published most often in Cardiovasc Intervent Radiol. Dr. An's most frequent co-authors are Sanjeeva P. Kalva, MD, Ronald S. Arellano, MD and Avik Som, MD, PhD.

CMS Open Payments shows 17 general payments to Dr. An from 6 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 70% of the total. Medtronic Vascular, Inc. paid the most, $524.

Dr. An graduated from Vanderbilt University School of Medicine in 2017.