Dr. Joel Ernster, of Colorado ENT and Allergy, is an accomplished Eye, Nose, and Throat physician practicing in Colorado Springs area since 1986. A holder of two patents, author of numerous peer-reviewed articles, and a owner of to prolific (and growing) list of research efforts, Dr. Ernster is an active physician at both Penrose-St. Francis and Memorial Hospitals and currently serves as Penrose’s Chief of the Medical Staff.