A Carpinteria native, Dr. Marsh graduated from the University of California's School of Dentistry at San Francisco in 1989. He returned to his hometown in 1993 to practice dentistry and lives in the area with his wife Victoria, and their son Joseph. Dr. Marsh is a strong believer in continuing education. He has traveled the country to attend courses covering the latest in cosmetic dentistry. Dr. Marsh has a certificate in Contemporary Esthetic Dentistry from Esthetic Professionals of Woodland Hills, California and is on the faculty there. He is a member of the American Dental Association, California Dental Association, Santa Barbara/Ventura County Dental Society, Academy of General Dentistry and the American Academy of Cosmetic Dentistry.