Darla R. Erhard, RN, CS, FNP, is a family nurse practitioner who joined Asthma, Immunology & Allergy Associates in May 2001. Mrs. Erhard earned a Bachelor of Science Degree in Nursing from Northern Illinois University and a Master of Science Degree in Nursing from the University of Tennessee at Chattanooga. She is certified as a nurse practitioner by the American Nurses Credentialing Center and holds a certificate of fitness from the state of Tennessee to prescribe medications under protocol with the practice physicians.