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Douglas Tomasian MD, FSCAIDr. Tomasian

Dr. Doug Tomasian is a native of Boston, Massachusetts. He has been with Illinois Cardiovascular Specialists since May of 2020. Prior to joining Illinois Cardiovascular Specialists, he treated patients mostly recently at Centegra Physician Care and Cardiothoracic & Vascular Surgical Associates and was director of cardiology at Centegra Hospital McHenry from 2011-2018.

Dr. Tomasian graduated from Bates College with a Bachelor of Science in Biology in 1989. He earned his medical degree from Jefferson Medical College of Thomas Jefferson University in Philadelphia in 1995 and completed his residency in Internal Medicine at Northwestern Memorial Hospital in 1998 and served as chief medical resident at Northwestern from 1998-1999. In 2003 he completed his training at Boston Medical Center where he was an Interventional Cardiology/Peripheral Vascular Fellow from 2002 – 2003 and a cardiovascular and interventional cardiology Fellow from 1999 – 2002. 

Dr. Tomasian and his wife, Agnes have three children. He enjoys spending time with his family outside work and playing tennis, skiing when he gets a chance and enjoying sports with his children.

Training and Education 


Bates College

Bachelor of Science, Biology, 1989

Medical School 

Jefferson Medical College of Thomas Jefferson University, 1995


Northwestern University Medical School, Northwestern Memorial Hospital, 1999


Boston University School of Medicine, Boston Medical Center, 2003

Board Certifications

Internal Medicine 

Interventional Cardiology

Hospital Affiliation

Advocate Good Shepherd Hospital, Barrington, IL




Tomasian DA, Hendel RC, Davison R, Hellstedt L, Fintel DJ.  Low-risk patients undergoing evaluation of acute chest pain do not benefit from heart rhythm monitoring (Abstract).  Journal of the American College of Cardiology.  2000; 35(2) Supplement A:399A.

Tomasian D, Keaney JF, Vita JA.  Antioxidants and the bioactivity of endothelium-derived nitric oxide.  Cardiovascular Research.  2000; 47(3):426-435.

Duffy SJ, Biegelsen ES, Tomasian D, Eberhardt RT, Holbrook M, Gokce N, Vita JA.  Low renin status is associated with impaired nitric oxide-mediated vasomotion in resistance vessels in hypertension(Abstract).  Circulation.  2001; 104(17) Supplement II:II-327.

Mouradian M, Wijman CA, Tomasian D, Davidoff R, Koleini B, Babikian VL.  Echocardiographic findings of patients with retinal ischemia or embolism.  J Neuroimaging.  2002; 12(3):219-223.

Kahn DF, Duffy SJ, Tomasian D, Holbrook M, Rescorl L, Russell J, Gokce N, Loscalzo J, Vita JA.  Effects of black race on forearm resistance vessel function.  Hypertension.  2002; 40(2):195-201.

Price DT, Gokce N, Tomasian D, Morrow J, Vita JA.  COX-2 Inhibition suppresses prostacyclin production, but does not affect vasomotor function in hypertensive Patients(Abstract).  Circulation.  2002; 106(19) Supplement II:II-169.

Duffy SJ, Tomasian D, Holbrook M, Keaney JF, Vita JA.  Response to authentic nitric oxide is preserved in patients with coronary artery disease and endothelial dysfunction (Abstract).  Journal of the American College of Cardiology  (in press).

Vita JA, Gokce N, Duffy SJ, Kahn DF, Tomasian D, Palmisano J, Thomas S, Holbrook M, Keaney JF.  Effect of atorvastatin on endothelium-dependent vasodilation in patients with coronary artery disease.  American Journal of Cardiology