Collingwood became involved with hospital boards in Newcastle, being a founder member of the Newcastle Regional Hospital Board and its chairmen from 1953 to 1968, then later he was involved with medical affairs on a national and international level.
Collingwood naging kasangkot sa ospital boards sa Newcastle, pagiging isang tagapagtatag ng mga miyembro ng Newcastle Regional Hospital Board at mga chairmen 1953-1968, at saka sa huli ay siya ang kasangkot sa mga medikal na usapin sa isang pambansa at internasyonal na antas.