Philadelphia Health Associates-Adult Medicine, PC (PHA-Adult Medicine). PHA-Adult Medicine is a private medical office where you can get comprehensive medical care. We treat acute illnesses as well as manage chronic diseases. We address male and women concerns of adults ages 18 and over. Come and see us for yearly preventive physicals, drivers physicals, diabetes, heart disease, cold, asthma, arthritis and more. With our referral network of many subspecialists in different hospital systems, we offer a high standard of care.