About Sierra Neurosurgery Group Sierra Neurosurgery Group for almost 40 years has provided exceptional spine and brain care to the residents of Reno, Northern Nevada, and Northeastern California. Our practice was founded on the principle of patient-focused care tailored to the individual. We continually evolve as the region’s premier resource for neurosurgical care, providing each patient with individualized treatment that ensures them the best quality of life possible. Sierra Neurosurgery Group is the region’s oldest continuously operating group of neurosurgeons and is one of the largest groups in Nevada specializing in the treatment of brain and spinal disorders.