Pfizer Inc. said its global president of worldwide research and development and medical, Mikael Dolsten, will also become the U.S. drugmaker's chief medical officer.

The pharmaceutical giant also appointed Lidia Fonseca as executive vice president and chief digital and technology officer.

Fonseca, who will take up the role at Pfizer in January 2019, is currently the chief information officer and senior vice president at testing services provider Quest Diagnostics Inc.

She will develop and lead the company's strategy for digitizing research, discovery and business processes.

Pfizer recently said Ian Read would step down as CEO, with Albert Bourla taking the top job, effective January 2019.