Dr. Jan is a licensed Internal Medicine in NY. Medical degree obtained from SUNY Downstate College of Medicine. Completed residency training at University of Pittsburgh and fellowship training at University of Pennsylvania . Currently practices at Northwell Health (Northwell Health), located at 225 Community Dr, Great Neck, NY 11021. Dr. Jan specializes in Autism, Health Services Research, Implementation Research, Hypertension, Intellectual disability, Primary care.. In addition to English, Dr. Jan speaks Mandarin.