Best Emergency Room clinics in San Marcos, TX.

Premier ER & Urgent Care offers full-service emergency and urgent care under one roof in Texas, including a location in San Marcos. They operate as part of Intuitive Health and provide 24/7 ER and urgent care services through multiple Texas locations, with their San Marcos presence indicated among other Texas sites. For immediate care in San Marcos, you can contact their San Marcos-area services via the general Premier ER channels listed for Texas locations.

CHRISTUS Urgent Care in San Marcos, TX provides prompt medical attention for minor emergency health concerns without requiring a hospital ER visit. Located off Interstate 35, the clinic offers minor injury care, illness treatment, pediatrics for ages six months and older, X-rays, EKGs, rapid lab testing for RSV, flu, COVID-19, and strep, school sports physicals, and video visits. Open daily from 8 a.m. with extended hours, it accepts major insurance plans including Blue Cross/Blue Shield, Humana, and Medicare.

CareNow is a national urgent care and primary care provider (part of HCA Holdings). They offer walk-in urgent care for minor illnesses or injuries, with on-site X-ray, flu shots, sports physicals, and occupational medicine. Many clinics are open 7 days a week with extended hours, and online check-in is available to reduce wait times. The company operates around 200+ clinics across the United States. CareNow is headquartered in Coppell, Texas, with a U.S.-based presence and operations tied to HCA.