John (Jack) Ownby, MD is an Internist, Neurologist, and Medical Intensivist, caring for neurologically injured and critically ill patients in the Houston and greater Houston areas since 1995. He also has special interest in Ethics, End of life issues, and Palliative care.

Dr. Ownby graduated from Emory University with a Bachelors of Science in Mathematics. He obtained his Medical Degree from University of Tennessee Colleges for the Health Sciences and then completed an Internal Medicine Internship and Residency at Tulane University in New Orleans. Dr. Ownby attended the National Institutes of Health (NIH) in Bethesda Maryland for Fellowships in Neurological Experimental Therapeutics and Critical Care Medicine. He went on to Baylor College of Medicine in Houston for Residency in Neurology, and later completion of his final year of Fellowship in Critical Care Medicine.

Following his residency and fellowship training at Baylor College of Medicine, Dr. Ownby accepted the invitation to stay on as an Assistant Professor of Internal Medicine to teach new fellows and house staff in Pulmonary and Critical Care Medicine. He later assumed Directorship for the Neurological Intensive Care Unit at The Methodist Hospital in 1997 and held dual faculty appointments at Baylor College of Medicine in Internal Medicine and Neurology. In the year 2000 he joined Houston Neurological Institute and remained on staff until late 2019. After taking a short sabbatical during the COVID pandemic Dr. Ownby joined Current Neurology Solutions in Pearland, Texas in 2021, as an inpatient tele-neurology service provider.

Through the years of caring for critically ill, Dr. Ownby has become a strong advocate for patient and family rights for determining directives of their care based on their own beliefs and values. Dr. Ownby has been integral in creating or helping to create rapid response stroke programs at multiple medical centers in the greater Houston region.