Mark Thomas, DMD was born and raised in Eugene, Oregon; graduating from Winston Churchill High School in 1971.
During his undergrad schooling, he served two years as a missionary in New Zealand. He graduated from Brigham Young University in 1977 with a Bachelors Degree in Health Science.
He attended Oregon Health Science University School of Dentistry and graduated in 1984 with a Doctorate of Dental Medicine (DMD).
After serving twelve years on active duty with the United States Navy, he returned to Oregon to work for what became Capitol Dental/Interdent until January of 2016. He is married to the former Jane Hendrickson and they have four children and ten grandchildren.