Carondelet Medical Group Riverstone 4892 N. Stone Ave., Suite 100 Tucson, AZ 85704-5761 Phone: (520) 396-1360 Fax: (520) 795-9043 Get Directions At Carondelet Medical Group, you will find highly trained, board-certified physicians and other experienced medical professionals who work together to help maintain and improve the health of you and your family..