Dr. Heffron continues to be a leader in a 55 year career as a family physician and educator. He has been at the University of New Mexico for 48 years and was the founding program director of the residency program and served for almost 15 years as professor and chairman of the department of family medicine. He has played a role in development of residencies in Roswell, Santa Fe, and Las Cruces. He was vice president of the AAFP (American Academy of Family Physicians), President of the ABFM (American Board of Family Medicine) and Christian Medical and Dental Associations. He was on the Board of the Society of Teachers of Family Medicine and was president of their foundation. He served on the Residency Review Committee for family medicine and was AAFP Residency Assistance Program consultant for 17 years. He has been president of the New Mexico Medical Society and the New Mexico AAFP. For several years he has been part time at UNM and involved in consulting and teaching in family medicine residency programs in resource poor countries, the majority of them in missionary hospitals.