TULSA CLINICAL RESEARCH, LLC is located on the outskirts of downtown Tulsa, a beautiful, thriving city in a metropolitan five county area of 762,000 whose population mix mirrors that of the United States. Tulsa is the diversified center for the economic, educational, and cultural life of Northeastern Oklahoma.

Ralph W. Richter, M.D. established TULSA CLINICAL RESEARCH, LLC in 1986, today a clinical research center well known and widely recognized for its experience and expertise in the management of neurological, psychiatric, and behavioral disorders. To date, TULSA CLINICAL RESEARCH, LLC has participated in a large number of pivotal multicenter trials investigating areas such as Alzheimer's disease, Parkinson's disease, stroke, seizures, multiple sclerosis, painful neuropathy, narcolepsy, attention deficit disorder (ADHD), depression, anxiety, schizophrenia, migraine, AIDS, and various other conditions.

TULSA CLINICAL RESEARCH, LLC employs dedicated research and health-care professionals with diverse backgrounds involved in the research trials as well as providing support for patients, their caregivers, and their families.

Ralph W. Richter, M.D., F.A.C.P. is the founder and the president of TULSA CLINICAL RESEARCH, LLC. He serves also as the Director of the Alzheimer's Disease Research Unit at St. John Medical Center, Tulsa, Oklahoma, and maintains a private practice in neurology and neuropsychiatry. Dr. Richter is also Clinical Professor of Neurology and Psychiatry at the University of Oklahoma College of Medicine in Tulsa.