MDMA Staff

Mark B. Leahey 

President & CEO

Mark Leahey is the President & CEO for the Medical Device Manufacturers Association (MDMA), the leading national trade association representing hundreds of innovative and entrepreneurial medical technology companies in Washington, DC. His responsibilities include advocating on behalf of the medical device industry to Congress, the Food and Drug Administration (FDA), the Centers for Medicare and Medicaid Services (CMS), and other federal and state agencies. He has led efforts for more reasonable and predictable regulatory pathways for innovators, a more timely and fair reimbursement process, and worked to open access in the hospital marketplace for all medical devices. Mr. Leahey led efforts against the medical device tax when it was first proposed in 2009, and successfully advocated for multiple suspensions of the tax before securing a full repeal in 2019. He has been named one of the medical device industry's top lobbyists and has served as one of the lead negotiators for the medical technology industry during every user fee agreement. Leahey currently serves on the Board of Directors for the Fogarty Institute, a leading medical technology incubator, and the Executive Board of EXCITE International, a global collaborative seeking to accelerate access to health technologies and the Editorial Advisory Board of Medical Product Outsourcing.  He is a member of the Massachusetts Bar and a graduate of Georgetown University, the Georgetown Law Center and Georgetown’s McDonough School of Business. 

Brendan Benner

Executive Vice President, Public Affairs

Brendan Benner is the Vice President of Public Affairs for the MDMA where he is in charge of communications, strategic outreach and grassroots development. Benner has extensive experience in the private and public sector, as well as working with non-profits. He began his career with the Archdiocese of Philadelphia's Office of Public Affairs where he worked on education policy and other issues, interacting with elected officials and policy makers. He spent several years working in Congress, serving both as a Communications Director and District Director for former Congresswoman Melissa Hart (PA) and Congressman Jim Gerlach (PA) respectively. He oversaw and implemented aggressive media and outreach plans in these highly competitive congressional districts. Mr. Benner is also a veteran of numerous Congressional and Presidential campaigns as well. Mr. Benner is a member of the Pennsylvania Bar and a graduate of Georgetown University and Temple University's Beasley School of Law.

 Carolyn Bruguera

Vice President & General Counsel

Carolyn Bruguera is Vice President & General Counsel for the MDMA. She brings extensive experience in the management of legal affairs and compliance for medical device manufacturers.   Prior to joining MDMA, Carolyn served as Vice President of Consulting Services for R-Squared Services & Solutions, Inc. (acquired by IMS Health) where she advised dozens of clients in domestic and foreign antikickback and anticorruption compliance, data privacy, Open Payments and international transparency requirements. She also served as Vice President and General Counsel to Hansen Medical, Inc., a California-based manufacturer of robotics for intravascular procedures, and to Micrus Endovascular Corporation, from its initial public offering through its acquisition by Johnson & Johnson. Before joining the medical device industry, Carolyn was a corporate and securities attorney in private practice.  She received her JD from the University of California, Berkeley’s Boalt Hall School of Law, and her AB, magna cum laude, from Harvard University. She speaks French fluently and is a member of the California bar.

Clayton Hall

Executive Vice President, Government Affairs

Prior to joining MDMA, Clayton spent 12 years working on Capitol Hill and served as Chief of Staff to three Members of the U.S. House of Representatives: former Congressmen Jim McCrery (LA) and Anh "Joseph" Cao (LA), and Congressman Tim Griffin (AR). McCrery and Griffin both served on the powerful Ways and Means Committee, the chief tax-writing committee in the House, which has significant jurisdiction over federal health care policy. Clayton managed a diverse portfolio of political and policy issues while he was on the Hill, playing a major role in drafting numerous pieces of legislation, including legislation to reform the federal regulatory regime, and Medicare payment policies. Mr. Hall received a Bachelor of Science degree in Economics from Washington and Lee University in Virginia.

Heather Rosecrans

Vice President of Regulatory Affairs

Heather Rosecrans brings more than 30 years of public health and medical device experience to MDMA. Rosecrans continues her commitment to public health at MDMA where she provides strategic consulting services and works with MDMA members to bring innovative devices to patients.

Prior to joining MDMA, Rosecrans served as Director of the 510(k) Pre-Market Notification Staff at the U.S. Food and Drug Administration's (FDA) Center for Devices and Radiological Health (CDRH). In this role, Rosecrans was responsible for implementing administrative and regulatory policy for the 510(k) Program, the 513(g) Program, Classification and Reclassification, de novo petitions and other premarket regulatory requirements.

Ed Rozynski 

Senior International Advisor

An effective advocate and a well-known voice for 30 years in government affairs, market access and reimbursement policy in the worldwide healthcare community. Maintains direct access to senior foreign health officials who appreciate Ed's curiosity and knowledge of comparative health care regulatory and payment systems. Ed works with policymakers to encourage appropriate overseas regulations and reimbursement for the medical technology industry. Currently assisting the 300-strong members of the Medical Device Manufacturers Association (MDMA).


Served as Intuitive Surgical's first VP for global government affairs and health economics. Prior healthcare organizations and Presidential committees served include: Stryker (as first VP of Govt Affairs), President Obama's Advanced Manufacturing Partnership (AMP), St. Jude Medical, Rozynski and Associates, AdvaMedPhRMAUSTR and the U.S. Virgin Islands Commerce/Economic Council.


In 2010, was awarded only the 10th Distinguished Alumni award granted by UNC-Greensboro’s School of Business and Economics.

Elliott Warren 

Vice President, Outreach & Marketing

Elliott Warren is a Vice President of Outreach & Marketing at MDMA. Elliott first started with MDMA as an Administrative Assistant where he provided background research and also fulfilled administrative duties. Specifically, he researched implications at the state and federal level surrounding the implementation of the medical device tax provision included in the Affordable Care Act (ACA). He continues to provide background on a portfolio of policy issues as well as helps to maintain MDMA's communications with Capitol Hill. Elliott is also responsible for coordinating MDMA's business development efforts and assists with the Association's grassroots advocacy, outreach and public affairs campaigns. Prior to joining MDMA, Elliott worked in the government affairs divisions of two DC based lobbying firms and spent time on Capitol Hill in the office of Senator Thad Cochran (MS). Elliott is a graduate of the University of Mississippi's Trent Lott Leadership Institute where he received a Bachelor of Arts Degree in Public Policy & Leadership with a minor in History.

Sheri DeVinney 

Director of Operations and Executive Assistant to the President

Sheri DeVinney is MDMA's Director of Operations and the Executive Assistant to the President. She brings more than 20 years of operational management and accounting experience to our association. In her current role, she is responsible for all office operations, programs, membership and serves as the Executive Assistant to MDMA’s President and CEO. Prior to joining MDMA, she held positions in the medical device, insurance, and real estate industries. Sheri also served in the United States Marine Corp for four years prior to attending Coastal Carolina Community College where she studied business and accounting.

Meredith Serdakowski

Director of Policy

Meredith is the Director of Policy at MDMA. Meredith began her time at MDMA several years ago as a Policy Analyst and Executive Assistant, where she has worked her way up to her current role. Prior to joining MDMA Meredith gained firsthand policy experience through serving as a Health Policy Associate at Jeffrey J. Kimbell and Associates and as a Health Policy Intern for the US Senate HELP Committee Majority Office under Chairman Lamar Alexander. While at Kimbell and Associates, Meredith analyzed federal rules and communicated changes through client-specific analyses detailing how new legislation would affect their products. Additionally, she created presentations to assist clients in understanding complex policy changes and participated in client meetings to discuss company strategies moving forward. Through her internships, Meredith spent time working directly with the Federal Budget and Appropriations process, CMS legislation, Department of Defense legislation, and covered committee hearings on Capitol Hill. Meredith graduated with Honors from Clemson University where she received a Bachelor of Science in Health Science and a Minor in Business Administration.

Emma Huther

Executive Administrative Assistant

Emma is an Executive Administrative Assistant at MDMA. Emma recently joined the MDMA team after graduating from Miami University, where she earned a Bachelor of Arts in Biology and Minor in Nutrition. At Miami University, Emma was an Undergraduate Research Associate and served as the President of HAWKS, the University's health education group. In this role, she directly managed 30 employees, implemented University-wide health education initiatives, trained all staff and presented at National conferences.