Dr. Nebblett received his Master's degree in Public Health and medical school training at Loma Linda University in Loma Linda, California. He did his Postgraduate Residency training at Hinsdale Hospital in Hinsdale, Illinois, and completed a teaching fellowship in Waco, Texas. He returned to Hinsdale to become a faculty member and eventually the Director of the Family Practice Residency training program.

Dr. Nebblett was an Assistant Professor in Family Medicine at Michigan State University- Kalamazoo campus for a number of years, before moving to New Mexico in the spring of 1999. At present he is an Adjunct faculty member at the University of New Mexico, School of Medicine in the Family and Community Medicine department. He is the Medical Director of the Presbyterian Medical Service/Catron County Medical Center in Reserve, NM and the Emergency Medical Services in Northern Catron County, New Mexico.

He is married to Maria, and they have four children.