Dr. Leonard is the only physician in Oregon certified in Headache Medicine by the United Council of Neurologic Subspecialties. He has been a neurologist and educator for more than 30 years and specializes in the diagnosis and treatment of headaches. Dr. Leonard received his MD and his Ph.D in Biochemistry from Oregon Health & Sciences University and completed a residency in internal medicine at University of California Hospital in Los Angeles. He completed his residency in neurology at University of Oregon Health Sciences University, in Portland, and served as chief resident. He is board certified in Neurology and has been the principal investigator for dozens of clinical trials. Among other honors, he is listed by The Best Doctors in America®, which represents the top five percent of doctors in the U.S. Dr. Leonard practices at PMG-Neurological Specialties and is part of Providence Brain and Spine Institute.