James J. Mahoney, D.O. (Dr. J), is a board-certified Osteopathic physician who received his Doctor of Osteopathy degree from the Philadelphia College of Osteopathic Medicine in 1985. Board-certified in family medicine after an internship in Corpus Christi, Texas, and a family medicine residency in Flint, Michigan, he served as an assistant professor in the department of family medicine at the Texas College of Osteopathic Medicine. He trains physicians at National meetings for the American Osteopathic Academy of Prolotherapy and Regenerative Medicine, as well as being actively involved with the American Academy of Orthopedic Medicine.

Dr. J is a recognized leader in the fields of Regenerative Medicine and medical informatics. He has been a frequent guest on television and radio programs, presenting his straightforward views on the complex world of health, medicine, and nutrition. He helps debunk medical myths and delivers powerful, scientifically sound methods to address everyday health challenges.

Dr. J practices in Southlake, Texas, and has been in private practice since 1989. Dr. J practices Regenerative Medicine, delivering health and wellness solutions that are truly revolutionary. His patent-pending Esprē system opens up the entire health experience to both patients and doctors alike. Esprē has been developed over the last 23 years, yielding excellent results for thousands of patients. Dr. J utilizes this technology to identify the root cause of health problems and create a personalized plan for each patient. That plan often includes hormone pellet therapy, nutritional support, and intensive regenerative therapies, including ultrasound-guided platelet-rich plasma and adipose-derived cellular injections.