Reversible data hiding is a good solution to provide image authentication or copyright protection. Being reversible,the secret data can be extracted, and the original image can be recovered as well without distortion. Most data hiding schemes distort the cover media in order to insert the secret data without the capability to recover the host medium after the secret message is extracted. However, the reversible recovery of the cover media is essential for some multimedia applications such as medical images, law enforcement, and fine art work. In this paper, we present a simple and effective reversible data hiding scheme for medical images. Experimental results show that our proposed method provides a higher pure payload without making noticeable distortions.