Dr. John A. Demopulos is an internal medicine doctor with nearly 30 years of experience. Dr. Demopulos and his team offer primary care services and can treat routine problems such as a cold or the flu, or provide on-going management for illnesses such as high blood pressure, diabetes or heart disease. We treat patients aged 17 and up.Home‧Location‧Our Physician‧Patient Center‧Contact Us‧Pay My Bill.