Premier Surgery Center is in the Diablo Medical Plaza, not far from John Muir Medical Center, Concord Campus. Specialties and doctors associated with this center include Dr. James Boccio, podiatric surgery; Dr. Kevin Degnan, plastic surgery; Dr. Brian Hershey, anesthesiology; Dr. David Shapiro, anesthesiology; and Dr. Debra Stewart, obstetrics and gynecology.