Specialties Family Medicine Family practitioners provide healthcare for the entire family, including minor surgical procedures, and will refer family members to the appropriate specialists when necessary. Internal Medicine An internist diagnoses and treats a variety of diseases affecting adults including diabetes, heart disease and cancer. Internists provide medical rather than surgical treatment. Occupational Medicine Pulmonary Medicine Pulmonary medicine specialists are internists who treat patients with lung diseases, including bronchitis, asthma, emphysema and cancer. Urgent Care