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Home Health Library Frequently Asked Questions Osteopathic medicine: What kind of doctor is a D.O.?

Osteopathic medicine: What kind of doctor is a D.O.?

You know what M.D. means, but what does D.O. mean? What's different and what's alike between these two kinds of health care providers?

What kind of doctor is a D.O.? Does a D.O. have the same training as an M.D.?

Answer Section

By Mayo Clinic Staff

A doctor of osteopathic medicine, also known as a D.O., is a fully trained and licensed doctor. A doctor of osteopathic medicine graduates from a U.S. osteopathic medical school. A doctor of medicine, also known as an M.D., graduates from a traditional medical school.

A major difference between D.O.s and M.D.s is that some doctors of osteopathic medicine use manual medicine as part of treatment. Manual medicine can include hands-on work on joints and tissues and massage.

After medical school, both kinds of doctors must complete training as residents in the specialty they choose. They also must pass licensing exams before they can treat people and prescribe medicines.

Last Updated: December 12th, 2025