Senior Medical Director, Medical Affairs, MASH

The Senior Medical Director, Medical Affairs – MASH, will play a pivotal and highly visible strategic leadership role within the organization, reporting directly to the VP, Medical Affairs, General Medicine. This role is responsible for driving the medical strategy and execution for MASH assets, with a strong focus on strategic planning, cross-functional leadership, and external engagement. The Senior Medical Director will ensure all medical affairs activities are delivered with scientific excellence, integrity, and patient‑centricity.

A Typical Day In This Role Might Look Like

• Provides visionary leadership in the development, execution, and continuous refinement of medical strategy and tactics for assigned assets, ensuring alignment with corporate and global objectives. Champions the integration of scientific communications, publications, annual medical planning, and field communication strategies in partnership with key internal and external stakeholders.
• Apply deep therapeutic area expertise and strategic business acumen to proactively identify and address evolving medical needs in clinical practice. Ensures the medically appropriate use of investigational medicines and anticipates future trends impacting patient care, policy, and access.
• Directs and oversees the generation, management, and dissemination of robust clinical and non‑clinical data. Drives high‑impact publication strategies and ensures scientific content supports both the medical strategy and external stakeholder needs, maintaining the highest standards of accuracy and scientific rigor.
• Leads cross‑functional and cross‑alliance teams with a focus on strategic alignment, collaboration, and excellence in execution. Fosters a culture of innovation and accountability, ensuring seamless coordination across medical, commercial, regulatory, and alliance partners.
• Serves as a key strategic advisor and leader on global and US cross‑functional teams, providing authoritative scientific and medical perspectives that inform and shape organizational strategy and decision‑making.
• Oversees the design, conduct, and reporting of Medical Affairs studies, ensuring scientific integrity, regulatory compliance, and alignment with strategic priorities. Provides mentorship and guidance to teams executing these initiatives.
• Cultivates and expands long‑term, strategic partnerships with clinical experts, societies, collaborative groups, advocacy organizations, payers, policy makers, and other external stakeholders. Acts as the primary ambassador for Regeneron, building trust and advancing shared goals in the MASH therapeutic area.
• Leads prioritization and support for investigator‑initiated studies, serving as a key decision‑maker and member of internal Scientific Review Committees. Ensuring alignment with overall medical strategy and organizational objectives.
• Oversees and ensures the scientific accuracy and compliance of all medical materials, including promotional and non‑promotional content. Provides final approval and guidance to uphold the highest standards of scientific and ethical integrity.

This Role Might Be For You If

• Must have an MD or MD equivalent with a preference for specialized fellowship training in Gastroenterology or Hepatology.
• 5 years of related industry experience in global or US medical affairs.
• Solid background and experience in drug development and life‑cycle management.
• Experience with working in an alliance setting strongly preferred.
• Ability to lead technical and business discussions internally and externally and explain scientific/medical concepts to all levels.
• Ability to cultivate and maintain relationships with leading medical/scientific experts in the relevant fields.
• Ability to establish trust through the consistent demonstration of scientific expertise and satisfactory follow‑through on requests from key opinion leaders.
• Strong leadership and management skills.
• Attention to detail in analyses, deliverables, and communications.
• Strong presentation and communication skills; must be able to provide succinct, strategic, and actionable insights to senior management.
• A proactive self‑starter who can lead work and manage others independently, with the ability to see the next step and take actions without prompting.
• Ability to juggle multiple projects.
• Thorough understanding of the healthcare environment including all external stakeholders.

Does this sound like you? Apply now to take your first step towards living the Regeneron Way! We have an inclusive culture that provides comprehensive benefits, which vary by location. In the U.S., benefits may include health and wellness programs (including medical, dental, vision, life, and disability insurance), fitness centers, 401(k) company match, family support benefits, equity awards, annual bonuses, paid time off, and paid leaves (e.g., military and parental leave) for eligible employees at all levels! For additional information about Regeneron benefits in the US, please visit For other countries’ specific benefits, please speak to your recruiter.

Please be advised that at Regeneron, we believe we are most successful and work best when we are together. For that reason, many of Regeneron’s roles are required to be performed on‑site. Please speak with your recruiter and hiring manager for more information about Regeneron’s on‑site policy and expectations for your role and your location.

Regeneron is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion or belief (or lack thereof), sex, nationality, national or ethnic origin, civil status, age, citizenship status, membership of the Traveler community, sexual orientation, disability, genetic information, familial status, marital or registered civil partnership status, pregnancy or parental status, gender identity, gender reassignment, military or veteran status, or any other protected characteristic in accordance with applicable laws and regulations. The Company will also provide reasonable accommodation to the known disabilities or chronic illnesses of an otherwise qualified applicant for employment, unless the accommodation would impose undue hardship on the operation of the Company’s business.

For roles in which the hired candidate will be working in the U.S., the salary ranges provided are shown in accordance with U.S. law and apply to U.S.-based positions. For roles which will be based in Japan and/or Canada, the salary ranges are shown in accordance with the applicable local law and currency. If you are outside the U.S, Japan or Canada, please speak with your recruiter about salaries and benefits in your location.

Please note that certain background checks will form part of the recruitment process. Background checks will be conducted in accordance with the law of the country where the position is based, including the type of background checks conducted. The purpose of carrying out such checks is for Regeneron to verify certain information regarding a candidate prior to the commencement of employment such as identity, right to work, educational qualifications etc.

Salary Range (annually)

$333,300.00 - $450,900.00