"Dr. Hirschenbein earned a PhD in clinical psychology at Boston University and an MD degree from the University of Illinois College of Medicine. He was board certified in internal medicine and gastroenterology and started a private practice in 1978. Following his introduction to integrative medicine in 1995, he became board certified in anti-aging medicine and holistic medicine. He is a CCN (certified clinical nutritionist), CNS (certified nutrition specialist), and DANLA (diplomat in advanced nutritional laboratory assessment). Dr. Hirschenbein has completed the AFMCP (Applying Functional Medicine in Clinical Practice) program, DAN (Defeat Autism Now) training, and Lyme disease training through ILADS (International Lyme and Associated Diseases Society).
"He has lectured nationally and internationally, hosted a local radio show, and given many TV interviews. Dr. Hirschenbein is the medical director of the La Jolla Institute of Comprehensive Medicine in California." 
- Director, PPNF
Resources and articles
- ppnf Neil Hirschenbein, organizational web page, accessed June 13, 2014.