North Valley Dermatology Center was established by Dr. Donald F. Richey and Dr. Stephen Schwartz after over 25 years of private practice. Dr. Vannucci and Dr. Sajben joined the practice in 2000 and 2001 respectively. In 2010 North Valley Dermatology Center became a partnership between Dr. Richey, Dr. Vannucci and Dr. Sajben. In 2011 Dr. Hodari joined the practice and officially became a partner in 2013. Dr. Richey retired in December 2015 which left the practice with three partners, Dr. Vannucci, Dr. Sajben & Dr. Hodari. We now have five Physician Assistants, Renee Christenson, MPAS, PA-C, Jackie Hollcraft, MPAS, PA-C, Greg Buttolph, MPAS, PA-C, and Barbara Kinkle, PA-C. Our team of Board Certified specialists are committed to superior, compassionate and timely dermatologic care to the people of the community and surrounding area.