Yale Medical Group welcomes more talented new physicians

New group brings expertise in a variety of fields

F. Ida Hsu, MD

Internal Medicine

Allergy and Clinical Immunology

F. Ida Hsu, MD, has joined the practice in allergy and clinical immunology. She is board certified in internal medicine, and allergy and immunology. Her clinical interests include allergic rhinitis, asthma, food allergy, drug allergy, urticaria, angioedema, anaphylaxis, common variable immune deficiency and eosinophilic disorders. Dr. Hsu completed her medical degree at Columbia University College of Physicians & Surgeons. She was an intern and a resident at New York-Presbyterian/Weill Cornell Medical Center, and completed her allergy and immunology fellowship at Brigham & Women’s Hospital, where she also served as a faculty member prior to joining the Yale Medical Group.

Jonathan Koff, MD

Pulmonary and Critical Care Medicine

Jonathan Koff, MD, has joined the practice as director of Adult Cystic Fibrosis Program. He is board certified in internal medicine, pulmonary medicine, and critical care medicine. His clinical interests include bronchiectasis, and the diagnosis and care of cystic fibrosis. Now an assistant professor, Dr. Koff completed his medical degree at Case Western Reserve University School of Medicine, his residency at Brown University Alpert Medical School, and his pulmonary and critical care medicine fellowship at the \ University of California in San Francisco, where he completed further training in adult cystic fibrosis and lung transplantation.

Nancy Stanwood, MD, MPH

Obstetrics and Gynecology/Family Planning

Nancy Stanwood, MD, MPH, is the new chief of family planning. She is board certified in obstetrics and gynecology. Her clinical interests include family planning, complex contraception, and teen health. Dr. Stanwood completed her medical degree at University of Pennsylvania School of Medicine. She completed her obstetrics and gynecology residency at University of Michigan, and the Robert Wood Johnson Clinical Scholars Program fellowship at the University of North Carolina, where she also earned her master’s in public health. Before coming to Yale, Dr. Stanwood spent ten years at the University of Rochester School of Medicine & Dentistry, where she successfully built and directed the Family Planning service.

Shari Damast, MD


Therapeutic Radiology

Shari Damast, MD, radiation oncologist and assistant professor of therapeutic radiology with clinical interests include gynecologic cancer, breast cancer, brachytherapy, and radiation therapy. She will be part of the multidisciplinary Gynecologic Oncology Program at Smilow Cancer Hospital. Dr. Damast completed her medical degree at Weill Cornell Medical College, her residency at Memorial Sloan Kettering Cancer Center and an internship at Beth Israel Medical Center.

Cassius Iyad Ochoa Chaar, MD, MS

Vascular Surgery

Cassius Iyad Ochoa Chaar, MD, MS, is an assistant professor of surgery and interventional radiology, and a vascular surgeon, seeing patients with peripheral arterial disease, carotid artery blockages, abdominal aneurysms and varicose veins at the Yale Physician’s Building and the Yale-New Haven Shoreline Medical Center. He is a board-certified general surgeon and is board-eligible in vascular surgery, and is a registered vascular specialist in the interpretation of vascular laboratory studies. Dr. Chaar’s clinical interests include varicose veins, aneurysms, carotid disease, peripheral arterial disease, peripheral venous disease, dialysis vascular access, endovascular surgery and lower extremity limb preservation, particularly in diabetic patients. He completed his graduate and medical degrees at American University of Beirut, Lebanon. He completed 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.