AFC Urgent Care Katy - Greenhouse Road is your premier destination for high-quality, accessible healthcare in Houston, TX. open seven days a week, our facility is dedicated to providing "the right care, right now" for patients of all ages. We offer a cost-effective alternative to the er with shorter wait times. our main services include expert urgent care, a fully equipped walk-in clinic, confidential std testing, and compassionate pediatric urgent care to help your family live life uninterrupted. Business Hours: Monday - Friday: 8:00 AM - 8:00 PM | Saturday - Sunday: 8:00 AM - 7:00 PM.