How can a doctor medical license be validated?

A doctor's medical license can be validated by checking with the medical board or regulatory agency in the state or country where the doctor practices. This can typically be done through the board's official website, which often provides an online verification tool. Additionally, databases such as the Federation of State Medical Boards (FSMB) can be used to confirm a doctor's credentials and license status. It's also advisable to review any disciplinary actions or complaints associated with the license.