Embattled health tech company Theranos has brought in H+K Strategies' Tali Mackay to fill its vacated top corporate communications slot.

Tali MackayTali Mackay

The appointment follows the September exit of Brooke Buchanan for Whole Foods Market.

Mackay, who also leads IR at Palo Alto-based Theranos, has led H+K's Western region for the past year and spent four years with the agency. She was previously a director for WCG and senior VP for CarryOn Communication.

On the corporate front, she was VP of global communications for Baxter Bioscience and regulatory affairs associate at Genentech.

Mackay joins newly minted senior VP of operations, John McChesney, as Theranos tries to pivot from its disgraced blood testing services mission to a broader healthcare technology focus.

Founder and CEO Elizabeth Holmes said in a statement, “One of my primary areas of focus this year has been the establishment of our new leadership team. I am proud to welcome these seasoned executives, and am humbled by the passion and commitment of the team working to realize our mission of accessible, affordable health information.”

The company praised Mackay's "high-stakes" experience in crisis, issues management, corporate branding and reputation, and mergers and acquisitions.