Dr. Matthew O. Horowitz is a gastroenterologist in Great Neck, New York and is affiliated with North Shore University Hospital at Northwell Health. He received his medical degree from Stony Brook University Health Sciences Center School of Medicine and has been in practice for more than 20 years. Dr. Matthew O. Horowitz has expertise in treating inflammatory bowel disease (ibd), hypertension & high blood pressure, asthma, among other conditions - see all areas of expertise. Dr. Matthew O. Horowitz accepts Medicare, Aetna, Humana, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. Matthew O. Horowitz is highly recommended by patients.