LOS ANGELES, Nov 12 — For nearly two decades, Kimberly Powell has been the person Nvidia sends out to explain what its chips can do for medicine.

This week, she became a name nobody at the company wanted to see in the headlines.

Powell, 48, Nvidia’s vice president of healthcare, was named by the New York Times (NYT) yesterday as the senior executive with whom chief executive Jensen Huang allegedly had an extramarital relationship, a claim neither has confirmed.

The NYT, citing five people who worked at the company, said Powell reported to Huang.