Do nothing.

“Your new doctor can request your records with your permission, so you don’t have to say anything to your old doctor,” says surgeon Vicki Rackner.

Write a letter that spells out why you’re leaving.

This may be preferable to a conversation, since you’ll have time to organize your thoughts.

Have a conversation.

If you want to be sure you’re heard, talk to your doctor directly (by phone is easiest). Stay calm and respectful as you explain the reason for your switch, says gastroenterologist Patricia Raymond.