H4B Chelsea

H4B Chelsea is a healthcare and wellness communications agency focused on advertising, branding, omnichannel marketing, customer engagement, public relations, and medical education services for pharmaceutical, biotech, OTC, and health technology clients. The business appears to operate as part of the Havas health communications network, historically associated with Health4Brands and Havas Health & You. It is not a drug developer and does not appear to own a therapeutic pipeline; instead, it supports life sciences brands with commercialization, brand strategy, and digital communications capabilities. Available sources indicate the company is active, privately held within a larger communications group, and headquartered in New York City.