Hsi-En Ho, MD

Hsi-en (John) Ho, M.D. earned a Bachelor of Science in Immunology with First Class Honors from McGill University in Canada and a Medical Degree from Yale University School of Medicine. He completed his internship and residency in Internal Medicine at Harvard Medical School/Beth Israel Deaconess Medical Center, followed by fellowship training in Adult and Pediatric Allergy and Immunology at the Icahn School of Medicine at Mount Sinai.

Dr. Ho serves as the Associate Director of the Primary Immunodeficiency Program at Mount Sinai. He leads translational research and clinical trials focused on immunodeficiencies and food allergies and has also conducted clinical research on environmental allergies and eosinophilic esophagitis. His work has been extensively published and presented at international conferences. Dr. Ho is the recipient of the American Academy of Allergy, Asthma, and Immunology (AAAAI) Foundation Award.

In his clinical practice, Dr. Ho treats both adult and pediatric patients, specializing in a broad spectrum of allergic and immunologic conditions. These include allergic rhinitis (hay fever), food allergies, asthma with pulmonary function testing, sinus disease, hives, eczema, contact dermatitis with patch testing, insect allergies, and immune deficiencies such as common variable immune deficiency (CVID) and other antibody deficiency disorders. He offers advanced treatments such as allergy shots (immunotherapy) and biologic therapies.

Dr. Ho is an active member of several professional organizations, including the AAAAI, the American College of Allergy, Asthma, and Immunology (ACAAI), the Clinical Immunology Society (CIS), the European Society for Immunodeficiencies (ESID), and the New York Allergy and Asthma Society.