Premier ER & Urgent Care is an urgent care provider located in San Marcos, Texas at 1509 N Interstate 35. The clinic treats non-life threatening injuries and illnesses, as well as routine immunizations and wellness visits. Most urgent care clinics are equipped to take x-rays and run EKG tests, urinalysis, blood tests, STD tests, pregnancy tests, drug tests, as well as flu and step tests. Walk-in urgent care clinics usually have shorter wait times than emergency rooms. However, COVID, flu season and other issues have led to longer wait times in recent months. Booking online or calling ahead to schedule an appointment can cut your wait time significantly. 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.