Lonestar Fastcare is an urgent care provider located in San Antonio, Texas at 1515 N Loop 1604 E. The clinic can diagnose and treat a wide range of non-life threatening conditions, including nausea, vomiting, persistent diarrhea, abdominal pain, shortness of breath, cuts and bruises, as well as sprains and broken bones. It can test for flu, strep, STDs, pregancy, drug use and numerous other conditions. Like most urgent care clinics, Lonestar Fastcare accepts walk-in patients. However, calling ahead or booking an appointment online can reduce your appointment wait time. While many health insurance plans cover urgent care, we strongly encourage you to confirm that the clinic is in-network with your insurance. In particular, not all clinics accept Medicare/Medicaid/TriCare.