<P> 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 . </P>
<P> 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 . </P>
who does carol end up with on er
who does carol end up with on er
Doug
Doug