Orthopedist Blake Marson, MD, provides onsite evaluations and care By CAYUGA HEALTH The Cayuga Orthopedics Immediate Care in Cortland offers onsite walk-in appointments that include diagnosis and treatment of upper and lower extremity issues, injuries, fractures, arthritis, tendonitis, and bursitis. Casting services and equipment such as braces, boots, orthotics, crutches, ...