Doctors are often very busy and can be under a lot of stress, so a gift that can help them relax and unwind would be a great choice. A spa gift basket, a massage certificate, or a nice bottle of wine could all be thoughtful and appreciated gifts for a doctor. If you want to get more personal, you could also consider getting them a small gift related to their specialty, such as a medical-themed book or a subscription to a medical journal. Ultimately, it's the thought that counts, so don't worry too much about finding the "perfect" gift. Just show your appreciation and let them know you're thinking of them