John Vassiliou

Strategic and growth-oriented agency executive with 20+ years of experience leading high-performing teams and driving revenue across top-tier healthcare communications firms. Proven success in launching and scaling multimillion-dollar accounts, developing go-to-market strategies, and delivering award-winning campaigns for global pharmaceutical brands. Adept at managing cross-functional operations—including financial oversight, recruitment, and client engagement, while fostering long-term partnerships with industry leaders. Known for blending creative vision with operational rigor to elevate agency performance and deliver measurable impact across oncology, rare disease, neurology, and urology portfolios.

Multi-talented business leader bringing 20+ years’ experience in selling and delivering promotional and medical communications for the pharmaceutical industry across therapeutic categories such as oncology, hematology, psychiatry, and urology. Possesses expertise in omni-channel strategy, integrated marketing, live and virtual event management, speaker programs, and peer-reviewed publications, as well as extensive launch experience.

Bachelor of Arts: Media Studies and History
Fordham University, College at Lincoln Center – New York, NY