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Cassius Iyad Ochoa Chaar

Associate Professor of Surgery (Vascular)

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Cassius Iyad Ochoa Chaar, MD, MPH, MS, RPVI

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Cassius Iyad Ochoa Chaar, MD, MPH, MS, is an associate professor of surgery in the division of vascular surgery and endovascular therapy. He is seeing patients at the Yale Physicians Building. He is a board-certified in general surgery and vascular surgery, and is a registered vascular specialist in the interpretation of vascular laboratory studies. Dr. Chaar’s clinical interests include peripheral artery disease (PAD) focusing on patients with critical limb ischemia and limb salvage, varicose veins, aortic and visceral aneurysms, carotid disease, deep vein thrombosis, and dialysis vascular access. He completed his graduate and medical degrees at American University of Beirut, Lebanon. He spent his general surgery residency at Yale-New Haven Hospital, and subsequently finished a fellowship in vascular and endovascular surgery at University of Pittsburgh Medical Center.

As a recent graduate from the Yale School of Public Health (MPH 2023), Dr. Chaar has established extensive collaborations to study clinical genetics of vascular disease, explore applications of artificial intelligence to improve vascular care, and assess new technologies that enhance vascular surgery treatments. He mentors and trains MD/PhD students interested in surgical outcomes research, genetic research, and quality improvement related to surgical therapies.

    Education & Training

    • MPH
      Yale School of Public Health , Biostatistics (2023)
    • Fellow
      University of Pittsburgh Medical Center (2011)
    • Chief Resident
      Yale New Haven Hospital (2009)
    • Resident
      Yale New Haven Hospital (2008)
    • Post-Doctoral research fellow
      Cleveland Clinic Foundation (2004)
    • MD
      American University of Beirut (2002)
    • MS
      American University of Beirut (2000)

    Honors & Recognition

    AwardAwarding OrganizationDate
    John N Forrest, Jr Mentorship AwardYale School of Medicine2023
    Quality Improvement Grant Vascular Study Group of New England 2023
    SVS Clinical Research Seed GrantSociety for Vascular Surgery2021
    VSGNE Quality Improvement GrantVascular Study Group of New England2021
    Juzzo Traveling fellowshipAmerican Venous Forum2021
    CT Innovations Biopipeline AwardCT Innovations2020
    Academic Development AwardDepartment of Surgery2020
    Charles W Bohmfalk AwardYale School of Medicine2020
    EJ Wylie Traveling FellowshipSociety for Vascular Surgery2020
    Quality Improvement AwardVascular Student Group of New England (VSGNE)2019
    Yale CBIT clinical pilot project AwardYale University2015
    OHSE Surgical Research AwardYale Department of Surgery2012

    Departments & Organizations