During last few years, the electronic medical records can be effortlessly stored with the fast development of healthcare technology. However, the patient’s medical information security is current prime concern. Massive volumes of health data are generated in the development of treatment in medical centers such hospitals, clinics, or other institutions. Because of these ever-growing numbers of medical digital images data and the requirement to share them between specialists and hospitals for improved and more precise diagnosis requires that patients’ privacy be protected. For this fact, there is a necessity for medical image watermarking. In this paper several security requirement in healthcare system is presented. We have also discussed the role of watermarking in the healthcare domain. There is also a brief discussion on various watermarking methodologies to protect the secrecy of medical records and data.