Jonathan S Siegfried, MD, FACC, FSCAI

Dr. Siegfried earned his medical degree at the New York University School of Medicine before staying on to complete his residency in internal medicine at NYU Medical Center and Bellevue Hospital. He then went on to complete his fellowship in cardiology at the Lenox Hill Heart and Vascular Institute in New York City, then completed an additional year of training in interventional cardiology before moving up the coast to join Connecticut Heart Group. He is well versed in numerous diagnostic and therapeutic modalities including echocardiography, vascular ultrasound and nuclear cardiology as well as transradial cardiac catheterization and coronary stenting. Dr. Siegfried believes in using all available tools for a complete approach to the diagnosis and treatment of cardiovascular conditions, tailored to the individual patient. He sees patients in our New Haven, Branford, Guilford and Hamden offices.


BA - University of Michigan, Ann Arbor, MI
MD - New York University, New York, NY
Residency, Internal Medicine - NYU Medical Center/Bellevue Hospital, New York, NY
Fellowship, Cardiovascular Disease - Lenox Hill Hospital, New York, NY
Fellowship, Interventional Cardiology - Lenox Hill Hospital, New York, NY

Board Certification(s)

ABIM - Internal Medicine
ABIM - Cardiovascular Disease
ABIM - Interventional Cardiology
NBE - Adult Echocardiography
CBNC - Nuclear Cardiology
ARDMS - Registered Physician in Vascular Interpretation

Hospital Affiliations

Yale New Haven Hospital
St Vincent's Hospital

Professional Memberships, Awards

Dr. Siegfried is a member of the following professional organizations:

Fellow of the American College of Cardiology
Fellow of the Society for Cardiovascular Angiography and Interventions

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