DOs can and do practice in all specialties in all areas of the US.
I know this comes off as a shocker to many on SDN but a lot of people, both MD and DOs, actually want to do primary care and actually want to live in underserved areas to practice. Indeed, some variant of this is in the mission statement of most DO schools, and was a foundational reasoning behind their founding in the past, and currently. I was fortunate enough to shadow two DOs who completely bought into this, as well as one who did not and currently a surgical attending at a top teaching hospital. Again, DOs do everything, everywhere.
There are several newer schools with lower stats, but many of the "established" DO schools have stats on par with several MD.
If you have a huge problem with the letters behind your name, give your seat (if you're accepted) to someone who wants to be a physician.