In the dispersed world, health information is exchanged based on the patients Personal Health Records (PHRs). Due to this reason, the construction and maintenance are focused by data centers, which are used for persons to gain high cost. The cloud providers are used in most of the PHR services to outsource the PHRs, which are stored by third party. The privacy is main anxiety because the PHRs information is shared to third party servers and illegal parties. To avoid this problem and to provide the guarantee security for PHRs, the encryption is applied for all PHRs before it is outsourcing. After encryption is applied still few major issues are present such as, flexible access, scalability in key organizations and well organized user revocation. These are the residual important challenges. In this proposed system, a patient-centric model has been generated with appropriate mechanisms for accessing PHR which are stored in semi confidential servers. Here the Attribute Based Encryption technique is used to encrypt every patients PHR’s. To support on demand, user revocations are also enabled dynamically based on the variations of access policies or file attributes to improve the process.