Dr. O'Neil graduated from the Michigan State University College of Osteopathic Medicine in 1983. He works in Warren, MI and specializes in Neurology. Dr. O'Neil is affiliated with Beaumont Health System and St John Macomb-Oakland Hospital Warren Campus.
Dr. O'Neil graduated from the University of Iowa Carver College of Medicine in 1978. He works in Tracy, CA and specializes in Ophthalmology. Dr. O'Neil is affiliated with Sutter Santa Rosa Regional Hospital.