About Riordan Medical Institute

Don’t rely on pain management to mask injuries. Explore biologic therapies with a group committed to the most minimally invasive procedures that help the body heal naturally and effectively.


Dr. Neil Riordan

Neil Riordan, PA, PhD is one of the early pioneers and experts in applied stem cell research. Dr. Riordan founded publicly traded company Medistem Laboratories (later Medistem Inc.) which was acquired by Intrexon in 2013.

Dr. Riordan has published more than 70 scientific articles in international peer-reviewed journals. In the stem cell arena, his colleagues and he have published more than 20 articles on multiple sclerosis, spinal cord injury, heart failure, rheumatoid arthritis, Duchenne muscular dystrophy, autism, and Charcot-Marie-Tooth syndrome.

In addition to his scientific journal publications, Dr. Riordan has authored two books about mesenchymal stem cell therapy: Stem Cell Therapy: A Rising Tide: How Stem Cells Are Disrupting Medicine and Transforming Lives and MSC (Mesenchymal Stem Cells): Clinical Evidence Leading Medicine’s Next Frontier. Dr. Riordan has also written two scientific book chapters on the use of non-controversial stem cells from placenta and umbilical cord.

Learn more about Dr. Riordan

Image of Tejas v Ozarkar MD

Tejas V. Ozarkar, MD

Tejas V. Ozarkar, MD, is an Ivy League trained, double board-certified physician with particular experience treating patients with neck, back, and joint pain. Dr. Ozarkar’s approach to treating acute and chronic musculoskeletal and pain disorders is conservative: he lays out conventional and out of the box options to address the problem. Dr. Ozarkar’s primary focus is creating a partnership with patients and serving as a guide to navigate treatment.

Dr. Ozarkar received his undergraduate education from Texas Tech University in Lubbock, Texas, where he studied accounting and biology before earning his Doctor of Medicine from the Texas Tech University Health Sciences Center School of Medicine.

Dr. Ozarkar continued his medical training with a Physical Medicine and Rehabilitation residency at the University of Pennsylvania (UPenn) Perelman School of Medicine in Philadelphia. He returned to his alma mater to complete an Anesthesia Pain Management Fellowship with Texas Tech University Health Sciences Center School of Medicine.

In addition to his clinical work, Dr. Ozarkar has been published in the PM&R Journal and has had the opportunity to present his research to the Texas Pain Society and various other conferences and symposiums. Dr Ozarkar belongs to several professional societies and maintains an active role in his county medical society.

Dr Ozarkar is proficient in landmark, ultrasound, and fluoroscopic injections of the entire spine and peripheral joints. He has done thousands of needle-based procedures throughout his years of practice. He is also proficient in neuromodulation (spinal cord stimulation, peripheral nerve stimulation trials, and full implants), dry needling, and electromyography.

Dr. Ozarkar is board certified in Pain Management and Physical Medicine and Rehabilitation.