[1] Noted for his academic work to promote public accountability for clinical research outcomes, Nash is also a known voice on population health policies.
[2][3] He has authored hundreds of peer-reviewed scientific articles, published many books on healthcare subjects, and acted as a chief editor in several medical journals.
[8][9] Media reporters have noted Nash's beliefs that "factors like behavior, genetics, and environment are more important than medicine in determining a person's health".
Among many others, such positions have included memberships of the National Quality Forum Task Force on Improving Population Health,[11] and the American Association for Physician Leadership in Tampa, Fla., as well as serving on the boards of the Geisinger Commonwealth School of Medicine,[12] the American Medical Group Association Foundation Board in Arlington, Va.,[13] and Humana, Inc[14] Honors received by Nash include an honorary doctorate by Salus University in Philadelphia.
[17] Through his writings of editorial articles and other means, for years Nash has been an advocate on many debated subjects in healthcare, including the social determinants of success, consumer's decision-making, the upscaling of services, Israel's public system as a model, and others.