NFC technology is being included in the new generation of cellular phones and with this, a new generation of services and applications. These new applications can be defined in any scope, e.g. shopping centre, transport, education, medicine, among others. All of them share the security problems that NFC inherits from RFID. Particularly in this paper are presented the deployment of services in medical environments that can be carried out with NFC and how to apply security measures in them. We must make a distinction between these defined services into two categories. On one hand, it will be based on cellular phone, where hospital staff (doctors, nurses, etc.) can manage patient's information, capture data from medical devices and manage of Electronic Health Record (EHR). On the other hand we find a set of services where NFC is used like communication channel to transfer information and to set up devices implanted in the human body (implants) and other solutions where we take the properties of electromagnetic induction of passive RFID to use as power source to recharge batteries of those implants (e.g. pacemakers, glucometers, etc.).