Dr. Clark J. Knutson is a pediatrician in Plattsburgh, New York and is affiliated with University of Vermont Health Network-Champlain Valley Physicians Hospital. He received his medical degree from University of Iowa Roy J. and Lucille A. Carver College of Medicine and has been in practice for more than 20 years. Dr. Clark J. Knutson accepts Aetna - see other insurance plans accepted.