Francisco Guzman, MD

Angelo B. Biviano, MD, MPH, is a cardiac electrophysiologist whose area of expertise includes the diagnosis and treatment of patients with complex heart rhythm irregularities. He has clinical and research interests in catheter and device based managements of arrhythmias including atrial fibrillation, as well as the use of implantable pacemakers and defibrillators. Dr. Biviano is board certified in Cardiovascular Medicine and Clinical Cardiac Electrophysiology. Dr. Biviano completed undergraduate studies at Princeton University with summa cum laude and Phi Beta Kappa honors. He received his MD and Masters in Public Health (in Health Care Management) degrees from Harvard University in 1997. He completed residency, chief residency, and fellowship training at NewYork-Presbyterian Hospital/Columbia University Medical Center. Dr. Biviano has experience with patient care, teaching, and cardiovascular research. He has been named "Best Doctor" in US News and World Report, "Top Doctor" in New York Magazine, "Teacher of the Year" in the Division of Cardiology at Columbia University Medical Center, and is a recipient of a National Institute of Health research grant in the area of atrial fibrillation ablation. He has authored numerous peer-reviewed articles in the field of cardiac electrophysiology. Dr. Biviano is a full time faculty member at ColumbiaDoctors since 2006. Dr. Biviano sees patients at Columbia University Medical Center in Washington Heights, NY.

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 C Randall, MD is a gynecologic oncologist focused on meeting the individual needs and goals of women with gynecologic cancers. Dr. Randall provides care for all gynecologic cancers and for women at increased risk for gynecologic cancers. He has a particular focus on providing safe surgical care for women with gynecologic cancers, including advanced or recurrent ovarian cancer, uterine, cervical and vulvar cancer. Dr. Randall also performs surgery for complex gynecologic conditions. He has extensive experience and expertise in minimally invasive surgeries, and he has performed over 1000 surgeries with the DaVinci surgical robot. Additionally, Dr. Randall has expertise in radical cancer surgeries, including fertility sparing surgeries for gynecologic cancers. Dr. Randall studied at Bowdoin College where he graduated Magna Cum Laude with Honors in English Literature and won the College Prize for Bowdoin from the Academy of American Poets. He then attended Johns Hopkins University School of Medicine and completed his residency in Obstetrics and Gynecology at Johns Hopkins Hospital. Next, he completed his fellowship in Gynecologic Oncology at the University of Pennsylvania in Philadelphia. Dr. Randall practiced gynecologic oncology and gynecologic surgery at the University of Pennsylvania and the Massachusetts General Hospital before coming to Columbia. Dr. Randall is a leader in global health. He is the Chair of the Mentorship and Training Committee of the International Gynecologic Cancer Society, which supports 22 gynecologic oncology fellowships in low- and middle-income countries where gynecologic cancer surgery was not previously available. He also serves as an international mentor for gynecologic oncology fellowships in Haiti and Rwanda.