He was previously head of the global health economics and outcomes research function at Human Genome Sciences and prior to that was director and team leader of the oncology and immunology HEOR teams at Bristol-Myers Squibb and senior vice president and business unit leader for global TPO and HEOR at TNS Healthcare.

Elys Roberts, president of Ipsos Healthcare North America, said: “Siva Narayanan is a highly experienced and qualified research professional who has built a loyal client base assessing the market needs and developing the value propositions for many of the world’s leading pharmaceutical and healthcare organisations.

“In his new role at Ipsos Healthcare, he will continue on that path by overseeing the generation of clinical and payer evidence to support the development of clinical, economic and humanistic value propositions of products and services in pharmaceutical, biotech and medical device industries.”