As a sweeping generality, yes. Most have studied science their entire lives and couldn't even tell you what a pro-forma statement or amortization schedule are. Of course there are plenty of exceptions.
My husband is an Orthopaedic Surgeon and his Undergrad is a BBA. He even worked 2-3 years before going to Med school and will probably get an MBA soon. Every single day, he is discussing RVUs, checking his P&L's, financial dashboards, and trying to figure out ways to market himself and the Dept.
Physicians are very smart people. It doesn't take that long to understand (though not gain expertise) these issues. If you are in private practice, you are in business for yourself. If you do not understand how your business works, you are at a serious disadvantage.