Examples of doctor letters are available from several online sources including LiveCareer.com and GreatSampleResume.com. GreatSampleResume also provides tips for doctors on how to write letters.
LiveCareer.com offers a customizable template for a doctor's letter. A user can choose the style, insert personal information and print or download copies.
GreatSampleResume.com provides several tips for doctors who are asked to write letters for their patients for events such as missing work due to illness. The letter should be in professional business style and provide the patient's name, medical condition, the doctor's treatment plan and recommendations for care and the doctor's signature. Doctor letters should be written on professional letterhead. The website includes a full example with step-by-step directions.