Apple Inc has been discussing how its "HealthKit" service will work with health providers at Mount Sinai, the Cleveland Clinic and Johns Hopkins as well as with Allscripts, a competitor to electronic health records provider Epic Systems, people familiar with the discussions said. While the talks may not amount to anything concrete, they underscore how Apple is intent on making health data, such as blood pressure, pulse and weight, available for consumers and health providers to view in one place. Currently, this data is being collected by thousands of third-party health care software applications and medical devices, but it isn't centrally stored.