I grew up in a 2 doc household. My mom is a general pediatrician and my Dad is a hematologist/oncologist. Both were founding members in private practices. I would say they both worked about 60-70 hours/wk.
They needed help raising my sister and I. Luckily, my aunt was willing to help raise us and picked us up from school, cooked, and took us to our sporting events/other activities until we could drive. We also had several great babysitters growing up to help out.
Despite needing help, my parents never missed anything we were involved in. I played 2 varsity sports in high school, and my sister 1. We both did theatre, band, and other stuff, and my parents were always there. We were also very close, and my parents were very involved with everything we did, and our friends. We usually took at least two family vacations per year. They were very loving and supporting parents.
One of the things that allowed them to work so hard and be so involved was how efficient they are with their time. They never, ever watch TV, unless its like the superbowl (The first 9 years they lived together they had no TV at all) and they never seem to waste time. They are also extremely close, and jogged together 5 mornings a week and every Wednesday night was "date night" and they would go to dinner.
So, its completely possible to have a 2 doc family a raise a great family! However, the biggest thing in my opinion is being somewhere where you have a great support network- parents or siblings who would be willing to help out with your children.