Biden's former White House doctor, Kevin O'Connor, DO, faced questions from House GOP members investigating the former president's cognitive decline. Here's the difference between a DO and an MD.

What is the difference between a DO and an MD? The key difference between DOs or doctor of osteopathic medicine and MDs or allopathic physicians is that DOs are trained to take a holistic approach.

What is the difference between a DO and an MD? The key difference between DOs or doctor of osteopathic medicine and MDs or allopathic physicians is that DOs are trained to take a holistic approach.