MarQueen is the largest independently owned emergency and specialty veterinary practice serving the greater Roseville, Folsom, Rocklin, El Dorado Hills, and Sacramento, CA region. And we’re one of the most respected, with an extraordinary team of compassionate board-certified veterinary specialists, emergency clinicians, technicians, assistants, and client service representatives. Our ER is open 8:00 am – 12:00 am daily. Hospitalized patients are cared for 24/7. Specialty consultations in cardiology, internal medicine, oncology, and surgery are by appointment, M-F. When it comes to providing the best care for your beloved pets, our real strength is in working together. Do not hesitate to reach out if there is anything we can do for you.