- Mann, James, 1759-18321
- Massachusetts General Hospital.2
- Massachusetts Medical Society.1
- Massachusetts.1
- Medical Society of the County of New York.1
- Merriman, Samuel, 1771-18521
- Morse, Jedidiah, 1761-18261
- Murray, Adolph, 1751-18031
- Murray, John W. B. (John William Boyles), d. 18181