Question: do carol and doug get married on er

Answer: Yes, Carol Hathaway appears again in Season 15. She and Doug are now married and practice at the University of Washington Medical Center, where Carol is a transplant coordinator. During the episode, Carol and Doug help a grieving grandmother (Susan Sarandon) donate her grandson's organs. One of the organs, a kidney, is given to ``some doctor''; unbeknownst to both Doug and Carol it is their former co-worker and friend John Carter. While on the job she met two current employees at Chicago County General Hospital Dr. Neela Rasgotra and Nurse Manager Sam Taggart.