Hey mama! I live in Ottawa and have had my 2 LOs here. DD1 with an OB and DD2 with a midwife at the Midwifery Group of Ottawa. The OB birth at the General Hospital went from a planned natural birth to all sorts of interventions. The midwife birth was at the Montfort Hospital, and it was amazing. I was induced for both my babies for suspected IUGR, but with DD2 all I needed was Cervidil to ripen my cervix enough for my midwife to break my water and from there labour proceeded naturally, with only one internal exam. One thing that I will tell you is that the midwives' availability is *VERY* limited, so if you hope to go that route, you would need to call asap. A friend of mine who had no Canadian Citizenship had her baby with someone from East Ottawa Midwives, and they paid out of pocket and I don't think it was too prohibitive. Actually, I seem to remember her telling me that some OBs turned her away because she didn't have insurance...check out this website for midwives in the Ottawa area.
As far as your concern, I have to tell you that with whom and where you end up giving birth depends somewhat on if you or your baby are classified as "high-risk". "High-risk" moms tend to be directed to delivering at the Civic Hospital, but the Midwifery Collective also has priviledges there, while "high-risk" babies tend to go to the General Hospital since the Children's Hospital of Eastern Ontario is right next door. If you have to go the OB route, I would call some midwife offices and ask them for recommendations of natural birth-friendly OBs.
Hope this helps!