| London Health Sciences Centre | 800 Commissioners Road East | London | ON | N6A 5W9 | (519) 685-8500 | Lung, Colorectal |
| Grey Bruce Health Services | 1800 8th Street East | Owen Sound | ON | N4K 6M9 | (519) 376-2121 | Lung, Prostate |
| St. Josephs Healthcare London | 268 Grosvenor Street | London | ON | N6A 4V2 | (519) 646-6000 | Prostate |
| Grand River Hospital | 835 King Street West | Kitchener | ON | N2G 1G3 | (519) 742-3611 | Lung, Colorectal |
| St. Josephs Healthcare Hamilton | 50 Charlton Avenue East | Hamilton | Ontario | L8N 4A6 | (905) 522 4941 | Lung |
| Niagara Health System | 1200 Fourth Avenue | St. Catharines | ON | L2S 0A9 | (905) 378-4647 | Lung |
| Brant Community Healthcare System | 200 Terrace Hill Street | Brantford | ON | N3R 1G9 | (519) 752-7871 | Lung |
| Hamilton Health Sciences | 688 Concession St. | Hamilton | ON | L8V 4T1 | (905) 521-2100 x75626 | Colorectal |
| The Credit Valley Hospital - Trillium Health Partners | 2200 Eglinton Avenue West | Mississauga | Ontario | L5M 2N1 | (905) 813-2200 | Lung, Prostate, Rectal |
| William Osler Health System - Civic site | 2100 Bovaird Drive East | Brampton | ON | L6R 3J7 | (905) 494-2120 | Lung |
| Michael Garron Hospital - (Previously Toronto East General Hospital) | 825 Coxwell Avenue | Toronto | ON | M4C 3E7 | (416) 461-8272 | Lung, Colorectal |
| Toronto General Hospital - University Health Network | 200 Elizabeth Street | Toronto | ON | M5G 2C4 | (416) 340 3111 | Lung |
| Toronto Western Hospital - University Health Network | 399 Bathurst Street | Toronto | ON | M5T 2S8 | (416) 603 2581 | Colorectal |
| St. Michael's Hospital | 30 Bond Street | Toronto | ON | M5B 1W8 | (416) 360-4000 | Colorectal |
| Mount Sinai Hospital | 600 University Avenue | Toronto | ON | M5G 1X5 | (416) 586-4800 | Colorectal |
| Sunnybrook Health Sciences Centre | 2075 Bayview Avenue | Toronto | ON | M4N 3M5 | (416) 480-6100 | Lung, Colorectal |
| Southlake Regional Health Centre | 596 Davis Drive | Newmarket | ON | L3Y 2P9 | (905) 895-4521 | Lung, Colorectal, Prostate |
| North York General Hospital | 555 Finch Avenue West | Toronto | ON | M2R1N5 | (416) 756-6000 | Prostate |
| Scarborough and Rouge Hospital - Centenary site | 2867 Ellesmere Road | Toronto | ON | M1E 4B9 | (416) 284-8131 | Prostate |
| Lakeridge Health | 1 Hospital Court | Oshawa | ON | L1G 2B9 | (905) 576-8711 | Lung, Colorectal, Prostate |
| Kingston General Hospital - Kingston Health Sciences Centre | 76 Stuart Street | Kingston | ON | K7L 2V7 | (613) 966-2300 | Lung |
| Hotel Dieu Hospital - Kingston Health Sciences Centre | 166 Brock Street | Kingston | ON | K7L 5G2 | (613) 544-3310 | Colorectal |
| The Ottawa Hospital | 1053 Carling Avenue | Ottawa | ON | K1Y 4E9 | 613-722-7000 | Lung, Colorectal, Prostate |
| Royal Victoria Regional Health Centre | 201 Georgian Drive | Barrie | ON | L4M 6M2 | (705) 728-9802 | Lung, Rectal |
| Health Sciences North/Horizon Santé Nord | 41 Ramsey Lake Road | Sudbury | ON | P3E 5J1 | (705) 523-7111 | Lung, Colorectal |
| Thunder Bay Regional Health Sciences Centre | 980 Oliver Road | Thunder Bay | ON | P7B 6V4 | (807) 684-6000 | Lung, Colorectal |
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