Skip to main content

Meet Our Team

Jeffrey Le Benger, MD FACS

Jeffrey D. Le Benger, MD, FACS

Chief Executive Officer, Summit Health and Westmed

Jeffrey Le Benger serves as Chief Executive Officer of Summit Health and Westmed. He is a member of the American College of Surgery, American Rhinologic Society, and American Society of Head and Neck Surgery. Dr. Le Benger is a recipient of the MDx Medical, Inc. Patient's Choice Award. He is featured in the New Jersey Family "New Jersey's Favorite Kids' Docs" and New Jersey Monthly "Top Doctors" listings. Most recently, he was included in the 2015 NJBiz “Power 100” list.

Mark Vainisi

Mark Vainisi

Chief Strategy and Development Officer

As Chief Strategy Officer at VillageMD, Mark is leading the organization’s growth and strategy to transform the way healthcare is delivered in the U.S. Previously, Mark was Senior Vice President, Global M&A, for Walgreens Boots Alliance (NASDAQ: WBA), a global leader in retail and wholesale pharmacy operating primarily under the Walgreens, Boots and Alliance Healthcare brands. Mark led all corporate development activities for WBA and manages WBA’s significant portfolio of pharmacy and healthcare investments. Mark currently serves on the boards of Option Care Health, Shields Health Solutions, and iA, a pharmacy automation company. Mark previously worked for the Tribune Company and law firm Sidley Austin. He graduated from the University of Michigan and the University of Michigan Law School.

Isai Senthil, Esq., CHRC

Isai Senthil, Esq.

Chief Legal Officer & General Counsel

As a key member of the management team, Ms. Senthil is responsible for providing advice on a wide variety of legal matters for Summit Health and its clients. In her role, she works closely with management, physician and business leaders to support their legal and business functions through oversight and management of departmental legal issues and contracting.

Ms. Senthil’s other essential functions include the oversight of legal matters and negotiations related to: practice acquisitions; physician and provider employment and related agreements; leases and other real estate related agreements; licensure applications, renewals and general licensure related compliance; operational agreements and partnerships; and general corporate and related transactions.

Doug Goggin Callahan Headshot

Doug Goggin Callahan

Chief Compliance Officer

Doug is the Chief Compliance Officer, joining the organization in 2025.  Doug brings nearly two decades of experience in compliance, legal, and regulatory experience in health care to the role. Doug oversees and supports the Compliance program; audits and investigations; and regulatory advisement for the enterprise. In his prior roles, Doug has overseen Compliance programs for Medicare and Medicaid health plans as well as health care providers. Most recently, Doug was the Vice President of Compliance and Regulatory Affairs at a New York state provider-based organization and health plan. Doug received his law degree at Fordham University School of Law.

Scott Heckenberg

Scott Heckenberg

Chief Technology Officer

Scott Heckenberg is a seasoned healthcare technology and digital transformation executive, with over 20 years of leadership experience driving strategic innovation, consumer engagement and operational excellence at Fortune 50 companies including CVS Health and Humana. Throughout his career Scott has spearheaded large-scale technology initiatives, achieving significant revenue growth, cost reductions, and improved health outcomes. As a passionate and servant leader, Scott is committed to fostering high-performing teams and leveraging technology to create lasting value.