About the Doctors

Ronald S. Fenn, DDS

Dr. Ronald S. Fenn has helped patients achieve beautiful, healthy smiles since 1966. After completing undergraduate studies at the University of Illinois, he attended dental school at the University of Illinois at Chicago, where he obtained his Doctor of Dental Surgery degree. Dr. Ronald S. Fenn completed a rotating hospital internship with the United States Navy in 1967, and from 1967 to 1969, he served as Dental Officer aboard the USS Klondike. From 1970-1971, he served as a full-time clinical instructor at the University of Illinois Dental School.

After completing his orthodontic specialty training at Loyola University Dental School in 1973, Dr. Fenn established his private practice, Fenn Orthodontics, in El Cajon.

Dr. Ronald S. Fenn maintains professional memberships with the American Association of Orthodontists, Pacific Coast Society of Orthodontists, American Dental Association, California Dental Association, the San Diego County Dental Society and the San Diego Academy of Orthodontists.

Dr. Fenn has been married to Joanne for over 40 years. They have two adult children and four grandchildren.

Kirsten M. Fenn, DDS, MSD

Dr. Kirsten M. Fenn is a board certified orthodontist. She has helped patients achieve the smiles of their dreams using advanced technology since 1997.

Dr. Kirsten M. Fenn graduated from Granite Hills High School, where she lettered four years in varsity soccer and three years in varsity softball.  She earned a Bachelor of Science degree from the University of California at San Diego in 1992. Subsequently, she received a Doctor of Dental Surgery degree in 1995 from the University of the Pacific School of Dentistry, where she also completed her orthodontic speciality training and obtained a master’s degree in 1997.

Dr. Kirsten M. Fenn joined her father in his private El Cajon practice in 1997 and then established the San Diego office in 2004.

Dr. Kirsten M. Fenn is a member of the American Board of Orthodontists, American Association of Orthodontists, Pacific Coast Society of Orthodontists, American Dental Association, California Dental Association, the San Diego County Dental Society and the San Diego Academy of Orthodontists.

She is married to Scott, and they have two children.