Marina del Rey-based HealthTensor mines electronic medical records for conditions that physicians might overlook. The company’s app then flags those conditions for the doctors. Eli Ben-Joseph, one of three founders, is HealthTensor’s chief executive. How did you get the idea for the software that HealthTensor has been developing? I and two of my friends – one a buddy of mine from MIT and the other from the Boston area – saw that doctors typically spend 10-15 minutes with a patient, glancing at the electronic medical records, perhaps asking a few questions.