Dr. Tammy T. Nguyen, MD

Dr. Nguyen practices at Umass Memorial Medical Center in Mendon, Massachusetts.

Dr. Nguyen's NPI, 1356736839, was assigned on April 1, 2015. Dr. Nguyen graduated from University of Utah School of Medicine in 2015. Dr. Nguyen holds Massachusetts license 283226.

Dr. Nguyen's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.

Dr. Nguyen's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. Nguyen is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group.

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

Vascular surgery is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Nguyen is licensed in Massachusetts.

CMS data shows 310 Medicare services from Dr. Nguyen across 9 procedure codes in 2024, for 205 Medicare patients. Medicare paid $25,107 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 205 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 72 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 41% are also on Medicaid. Their average risk score is 2.98, 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. Nguyen's median patient age at 75, with 46% women.

In 2024, Dr. Nguyen wrote 67 Medicare Part D claims for 32 patients. 81% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $169 in total drug cost. In 2021, CMS named 29 claims across 2 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Nguyen for performance year 2024, reported through an alternative payment model (APM). Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 33 procedures of removal of tissue by Dr. Nguyen, more than 74% of the clinicians it reports for that procedure.

Leg revascularization (restoring blood flow): 1 to 10 procedures (CMS shows small counts as a range)

Varicose vein removal: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 1 paper to Dr. Nguyen in 2013.

CMS Open Payments shows 112 general payments to Dr. Nguyen from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 64% of the total. Organogenesis Inc. paid the most, $2,582.

Dr. Nguyen graduated from University of Utah School of Medicine in 2015.