Physicians Health Alliance, Inc. Infectious Disease physicians provide a full range of infectious disease care, treating diseases ranging from the Measles to Meningitis. They specialize in the care of patients ranging in age from adolescent to senior care. Our Infectious Disease physicians currently see patients out of two locations in the Scranton area. If you are interested in scheduling an appointment with a physician or have been referred to a PHA physician, please use the Providers link for their address and phone number. We look forward to providing you with exceptional care.