I think you can find a list @ One More Soul I know those Dr that are listed at One More Soul are NFP (Natural Family Planning) supporters. So I'm assuming that they would also be pro-life.
The One More Soul website has listings of NFP only doctors including some OBGYN's I would assume. I would think if they are NFP only they are also pro-life.
Also keep in mind I'm sure not ALL prolife or NFP only doctors are listed on the websites so it's worth checking with your diocese to see if they have a physician they recommend. Also if you are looking in regards to pregnancy many of the family practice doctors that are pro-life/nfp only also deliver babies. We've had great luck with these doctors.
Another source could be looking for NaPro Technology doctors as they are NFP only and geared towards OBGYN issues as well. The site for that would be:
I moved to a new area a year ago and was in the middle of my pregnancy. I tried finding a prolife obgyn website but it was difficult. The diocese was not much help either. I just went online and found prolife doctor websites and looked until I found an obgyn listed in my area, not the best approach, but it worked for me. I would recommend contacting nfp consultants in the area, I am sure they would be able to give you some doctors names. A lot of prolife/nfp obgyn's are in contact with nfp consultants and get material for their offices through them.
I found mine through a link on the Couple to Couple League's website to One More Soul's NFP Only Directory, which has already been posted. You might also check the ads in local church bulletins. Good luck in your search!