Key Apple Health Technology Executive Said to Depart Company

Yoky Matsuoka, who joined Apple Inc. in May as an executive to help run health technology initiatives, has left the iPhone maker, according to people familiar with the matter. Matsuoka was hired to lead teams involved with the company's HealthKit tracking software, the CareKit tool for managing patient medical care, the ResearchKit framework for conducting medical studies via Apple devices, and related machine learning algorithms. Matsuoka reported to Jeff Williams, Apple's chief operating officer, who also runs the teams related to the Apple Watch, health research, and fitness applications. An Apple spokeswoman declined to comment. Before joining Apple, Matsuoka led technology efforts as a vice president at Alphabet Inc.'s Nest Labs.