Gastroenterology (401) 729-2163 Gastroenterologists are internists who specialize in problems related to the digestive system and stomach. Geriatric Services (401) 729-2071 Geriatric physicians specialize in the care of older adults. They are experts in dealing with the multiple medical problems and chronic illnesses that may affect the elderly. Gynecology (401) 729-3600 Obstetricians are concerned with the management of the female reproductive system, including pregnancy, prenatal care, birth and postpartum care.