25+ years within Hepatology and Virology clinical development

Dimitar Tonev was a Regional Medical Director for the UKINORD region and was instrumental in the buildup of a very strong regional medical team.

During his reign Cubist build a very strong collaboration with BSAC and was at the forefront of the fight with anti microbial resistance.

Dimitar and his team was an example of professionalism during the launch of Tedizolid and prelaunch of CT and subsequent hand over to the MSD team after acquisition

His unique combination of over 25 years of clinical expertise, deep involvement in drug development, and impressive commercialisation experience across liver diseases and chronic viral infections makes him stand out.

Whether it’s advancing non-invasive diagnostics or navigating complex healthcare strategy, Dim brings both scientific depth and business insight — a rare and invaluable combination for the future of liver health.

DT served as a Medical Director  Hepatology under my watch in 3 different companies: BMS, Intercept and Fractyl. He was always very data oriented and able to see the full picture of disease pathophysiology, product profile and unmet patients medical needs.

He led teams across different diseases, cultures and geographies with the same natural talent to unite, educate and protect, many of his employees reaching higher levels in the organisation.

Dimitar was always well connected and respected by his colleagues in hospitals and well-known KOLs. With his involvement, we developed and successfully launched products in HIV, HBV, HCV, PBC and MASH this forming a really broad picture of proficiency in the general domain of Hepatology drug development.

Working under Dimitar at BMS as a Senior Medical Advisor was one of the most formative experiences of my career. He provided the perfect balance of support and autonomy, and always available with thoughtful guidance when needed.

His leadership style encouraged me to step into new challenges, and take ownership of projects with confidence. His leadership is authentic, inspires trust, and creates a space where people can grow and thrive.


I’m genuinely appreciative of his mentorship during and after the time we had worked together.

I have had the pleasure and the privilege of working with Dimitar when he offered me a unique opportunity to lead the medical strategy for the HIV and Virology in the United Kingdom and Ireland.

He brings a combination of multiple therapeutic area of expertise, strong strategic thinking, collaborative spirit and deep knowledge of the regulation.

Coming from France to take the lead in a new country with several nations, I have learned a lot from him to make me confident with this new challenge.

I can confidently recommend him for senior and global medical affairs and clinical development roles and positions. I do believe that any team and company would be lucky to have him onboard

During Dimitar Tonev’s time at Calliditas, I had the opportunity to collaborate with him on projects focused on primary biliary cholangitis (PBC) and autoimmune hepatitis. His support was highly valuable, particularly in the areas of medical affairs and external engagement.

Dimitar demonstrated a strong command of liver diseases and a solid understanding of clinical development.

His ability to connect with key opinion leaders (KOLs) and patient advocacy groups helped strengthen our outreach and ensured our work remained aligned with both scientific and patient perspectives.

I appreciated his thoughtful contributions, professionalism, and collaborative approach. Dimitar was a reliable and knowledgeable partner, and his input consistently added value to our shared efforts.

It is with great respect and appreciation that I endorse Dr. Dimitar Tonev for his outstanding work in the field of hepatic disorders.

As a specialist, Dr. Tonev brings a rare combination of clinical precision, scientific insight, and compassionate care to the management of liver diseases, particularly in the fields of autoimmune and cholestatic liver diseases.

I have had the opportunity to work closely with Dr. Tonev and have consistently been impressed by his expertise, thoughtful decision-making, and collaborative spirit. His dedication to advancing hepatology, both at the bedside and through clinical research, reflects his solid commitment to improving patient outcomes.

Dr. Tonev is a trusted expert and leader in the hepatology community. I am confident that patients and colleagues alike will continue to benefit from his expertise and integrity.

I have known Dr. Dimitar Tonev for more than ten years — our first collaboration began during the early development of a NASH trial, and as the medical program evolved, so did our professional relationship.

Dimitar consistently demonstrated an exceptional ability to integrate data-driven insight with a deep understanding of disease pathophysiology, therapeutic product profiles, and unmet medical needs. His capacity to see the “full picture” has always set him apart as a strategic thinker and a trusted scientific leader.

His unique combination of over 25 years of clinical experience, deep engagement in drug development, and commercial acumen across liver diseases and chronic viral infections makes him a standout professional.

Whether advancing non-invasive diagnostics or navigating complex healthcare strategies, Dimitar brings both scientific depth and business insight — a rare and invaluable combination for the future of liver health.