No appointments necessary! Emergency rooms and urgent care centers aren't always your best choice when you need immediate, minor health care. Sometimes, seeing your primary care physician just won't work for your schedule. Avoid long wait times and high costs with a visit to BJC Medical Group Convenient Care at Wentzville. Knowledgeable, compassionate BJC providers are on hand day or night, ready to help you with a variety of minor injuries and illnesses. You don't need to make an appointment, and our staff will accommodate your needs quickly and efficiently. Plus, our co-pay is the same as a primary care visit, which is often less expensive than a visit to an urgent care or emergency room.