Doctor Robert MacArthur graduated from the University of California, Berkeley with a double major in Biochemistry and Physiology. During his time at the University, Doctor Robert MacArthur was a renown athlete competing on both the boxing and Rugby teams.

Afterwards, Doctor Robert MacArthur enrolled at the Coumbia College of Physicians and Surgeons and was elected the president of the Columbia P&S (Now known as the Vagelos school of medicine). Robert MacArthur went on to complete his orthopedic residency at Harbor UCLA.

Aside from his education, Doctor Robert MacArthur was an activated reservist in the United States army during the second Iraq war where he rose the ranks from Captain to Major, and was recommended for Lieutenant colonel.

Robert MacArthur is now the father of 2 boys and 1 girl. Dr. MacArthur splits his time between workers comp neutral evaluations (QMEs) and general orthopedic surgical practice in Hemet, CA.