PM&R will total 4 years of residency training. PM&R is sort of unique in that many programs offer 3 yrs of advanced training (requiring a seperate internship/PGY1 year -- surgery, prelim in IM, transitional, or Family Prac). There are also a handful of programs that offer only 4 year integrated programs or both.
FP is only 3 years. Ortho is 5?? (can't recall). EM is 3. Neurology (4?)