Paula M Castaño, MD, MPH

Dr. Ramsay Fuleihan is the clinical director of the Division of Pediatric Allergy, Immunology and Rheumatology and a professor of pediatrics at Columbia. Throughout his career his main research interest has been the pathogenesis and treatment of primary immunodeficiency diseases. Dr. Fuleihan was formerly chief of the division of allergy and immunology at Sidra Medical and Research Center in Qatar, and Director of Primary Immunodeficiency Clinical Services and the Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies at Ann & Robert H Lurie Children’s Hospital of Chicago. Dr. Fuleihan earned his medical degree from the American University of Beirut in Lebanon, completed his pediatric residency at Duke University Medical Center, and fellowship in allergy and immunology at the Children’s Hospital-Boston at Harvard Medical School. Dr. Fuleihan is a member of the Board of Directors of the American Board of Allergy and Immunology. He is an active fellow of the American Academy of Allergy Asthma and Immunology, where he served as Chair of the Primary Immunodeficiency Committee; a member of the Clinical Immunology Society, where he served as chair of the CME committee; a member of the European Society for Immunodeficiencies; and a member of the Society for Pediatric Research. He serves on the Medical Advisory Committee of the Immune Deficiency Foundation and on the Board of Directors of Bounce Children’s Foundation.

Thomas J. Starc, MD, is a clinical cardiologist with an interest in general cardiology. He is the medical director of the Children's Cardiovascular Health Center which specializes in the care of children with high cholesterol and high triglycerides. His research interests include the care of children and adolescents with elevated cholesterol secondary to familial hypercholesterolemia and the management of HIV induced cardiomyopathy. Dr. Starc received his MD from Mount Sinai School of Medicine. He completed residency at Los Angeles County-University of Southern California Medical Center, and fellowships in pediatric cardiology and pediatric pulmonology at NewYork-Presbyterian Morgan Stanley Children’s Hospital.

Dr. Debkumar Sarkar, DO, MBA, FSIR is a board-certified interventional radiologist. He is an assistant professor of radiology at Columbia University Irving Medical Center and an attending radiologist at NewYork-Presbyterian Hospital. Dr. Sarkar serves as director of outpatient interventional radiology services for the Department of Radiology. Dr. Sarkar has extensive experience in interventional oncology and cancer diagnosis and treatment. He is locally and nationally renowned for treatment of metastatic tumors in the liver, lung, and kidneys. Dr. Sarkar has extensive experience with minimally invasive techniques including Y90 radioembolization, microwave ablation, cryoablation, and histotripsy for primary and metastatic cancers including hepatocellular carcinoma, colon cancer, and metastatic breast cancer. In addition to cancer therapy, Dr. Sarkar brings expertise in the treatment of venous disorders including deep venous thrombosis, venous thromboembolism, and vascular insufficiency. Dr. Sarkar has extensive experience treating complex biliary disorders and performs cholangioscopy. He is also very experienced in women’s health treatments for pelvic pain related to fibroids and pelvic congestion syndrome. Dr. Sarkar performs pain management and spine related procedures such as vertebroplasty and kyphoplasty. He also works in conjunction with urologists in the treatment of male infertility and urinary obstruction. Dr. Sarkar completed his undergraduate training in biomedical engineering at Northwestern University. He completed medical school training at Rowan University, followed by a Masters in Business Administration from University of Massachusetts Amherst. Dr. Sarkar completed an internship at UPMC Mercy Hospital in Pittsburgh, Pennsylvania and a residency in diagnostic radiology at Cooper University Hospital and MD Anderson Cancer Center of NJ in Camden, NJ. He subsequently completed a fellowship in vascular and interventional radiology and interventional oncology at Memorial Sloan Kettering Cancer Center and Weill Cornell Medical Center/New York Presbyterian Hospital. Dr. Sarkar served as chief of interventional radiology at Maimonides Medical Center in Brooklyn and subsequently joined the faculty at Memorial Sloan Kettering Cancer Center before being recruited to Columbia. Dr. Sarkar has published on numerous topics in IR including treatment of metastatic cancers in the liver with radioembolization and ablation and various topics involving robotics, artificial intelligence, and informatics. He is a member of the Society of Interventional Radiology and the Society of Interventional Oncology where he serves on several national committees including the SIR Economics committee and the expert consensus panel for management of pulmonary embolism.