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Chief Executive Officer
Dr. Hudis is the CEO of the American Society of Clinical Oncology (ASCO) and serves as executive vice chair of its Conquer Cancer Foundation. He oversees a staff of about 500 who serve a global membership of over 50,000 investigators and clinicians as they seek to reduce the burden of cancer through research, education, and the delivery of the highest quality care possible. ASCO holds the one of the world’s largest annual meetings focused on cancer research and care, publishes the high impact Journal of Clinical Oncology (and associated titles), supports and conducts research, defines optimal quality of care, and advocates for access for all. ASCO’s foundation, Conquer Cancer, funds more early-career physician scientists, without limits on geography or focus area, than any other independent cancer organization worldwide.
Prior to assuming his roles at ASCO in 2016, Dr. Hudis was the Chief of the Breast Cancer Medicine Service, Solid Tumor Division, and an Attending Physician at the Memorial Hospital for Cancer and Allied Diseases and a Professor of Medicine at the Joan & Sanford Weill Medical College of Cornell University Medical College both in New York City. Over nearly three decades, his team identified novel risk factors for cancer linked to inflammation and obesity and developed new drugs (G-CSF, taxanes, anti-HER2 agents) and regimens that raised the global standard of care across all stages of breast cancer.
In 1983 Dr. Hudis received his medical degree from The Medical College of Pennsylvania in Philadelphia, Pennsylvania through a 6-year combined BA-MD program with Lehigh University. He completed his internship and residency in Internal Medicine at The Hospital of the Medical College of Pennsylvania where he then served as Chief Medical Resident. He completed a fellowship in medical oncology and hematology at Memorial Sloan-Kettering Cancer Center in New York in 1991 and then joined the faculty where he continues to volunteer as a clinical consultant.
Dr. Hudis is a Trustee of Drexel University and of the East Hampton Health Care Foundation.
Dr. McLeod is Chief Executive Officer for the American Academy of Ophthalmology and Professor and Chair Emeritus in the Department of Ophthalmology at the University of California, San Francisco. He pursued his undergraduate degree at Dartmouth College, followed by his medical doctorate degree at the Johns Hopkins University School of Medicine. He completed ophthalmology residency at the Illinois Eye and Ear Infirmary of the University of Illinois in Chicago, followed by fellowship training in cornea, external disease and refractive surgery at the Doheny Eye Institute.
Dr. McLeod’s clinical specialty is in refractive surgery, cornea and external disease. His research interests include the study of improved strategies for diagnosis and management of eye infections both in the U.S. and in the developing world, as well as the development of advanced cataract and refractive surgery technology.
Dr. McLeod is former Chair of the Ophthalmic Devices Panel of the Medical Devices Advisory Committee of the Food and Drug Administration. He has served as a member of the National Advisory Eye Council of the National Institutes of Health, on the Council of the American Ophthalmological Society, and on the Board of Directors of the American Board of Ophthalmology and the Heed Ophthalmic Foundation. He currently serves on the Board of Trustees for Research to Prevent Blindness. Dr. McLeod is former Editor-in-Chief for the AAO’s flagship peer review journal Ophthalmology.
Patricia L. Turner, MD, MBA, FACS is the executive director and chief executive officer of the American College of Surgeons and a clinical professor at the University of Chicago Medicine. She was previously director of the Division of Member Services at the American College of Surgeons, and before joining the College, Dr. Turner spent eight years in full-time academic practice on the University of Maryland School of Medicine faculty, where she was the surgery residency program director. Roles in national professional organizations or institutions include member of the Boards of Directors of the Council of Medical Specialty Societies and OceanFirst Bank (OCFC), Corporate Member CEO of The Joint Commission, Specialty Society CEO Coalition member, 2024 president-elect of the Council of Medical Specialty Societies, and past chair of the Society of Black Academic Surgeons Foundation Fund, the American College of Surgeons’ Delegation to the AMA House of Delegates, AMA Council on Medical Education, and Surgical Section of the NMA, past president of the Society of Black Academic Surgeons and past member of the Wake Forest Baptist Medical Center Board of Directors.
A graduate of the University of Pennsylvania and the Bowman Gray School of Medicine at Wake Forest University, Dr. Turner continued her training as an intern and resident in surgery at Howard University Hospital in Washington, DC. Her fellowship training in minimally invasive and laparoscopic surgery was completed at the Mount Sinai School of Medicine, Weill-Cornell University School of Medicine, and Columbia University School of Medicine in New York City. Her MBA was completed at the University of Maryland Robert H. Smith School of Business. Dr. Turner is board-certified in surgery, is a Fellow of the American College of Surgeons, and is a member of the American Surgical Association, American Medical Association, National Medical Association, Southern Surgical Association, Southeastern Surgical Congress, Society of University Surgeons, Society of Black Academic Surgeons, Association of Women Surgeons, Latino Surgical Society, and an honorary member of EAST, the Excelsior Surgical Society, and Asociación Colombiana de Cirugia.
Mary E. Post, MBA, CAE, is the chief executive officer of the American Academy of Neurology, the world’s largest association of neurologists with more than 40,000 members. Leading a team of more than 200 staff with locations in Minneapolis, MN, and Washington, DC, Post is responsible for the AAN achieving its mission of enhancing member career fulfillment and promoting brain health for all., as well as the AAN’s vision of being indispensable to its membership.
Post began her position as CEO of the AAN in April 2020. She is the fourth CEO since the AAN was established in 1948. Post was selected for the role based on her extensive experience leading a major nonprofit medical specialty organization as well as her broad prior experience at the AAN, where she served for 16 years in many leadership roles, including as deputy executive director.
Post is a Certified Association Executive (CAE), the highest credential in the association management industry. She also holds a Post-Master’s Certificate in organizational leadership, a Master of Business Administration Degree in human resources, and a Bachelor of Science Degree in business administration. She has over 25 years of experience in the nonprofit medical specialty industry. She has led meaningful, sustainable, programmatic, operational, and financial growth within organizations while increasing value for stakeholders and creating an award-winning, resilient culture.
In Post’s most recent position as the executive director for the American Board of Anesthesiology (ABA), she established a strong and collaborative partnership with its board of directors and 700 volunteer physicians to innovate and transform the organization’s programs.
Under Post’s leadership, the ABA became the first US medical specialty certifying board to successfully implement an Objective Structured Clinical Examination (OSCE) into the ABA’s initial certification program. In 2014, the ABA also reimagined its Maintenance of Certification in Anesthesiology Program (MOCA) and incorporated learning and assessment of knowledge into its physicians’ daily practice through MOCA Minute®.
Dr. Slaw received his masters and doctoral degrees in educational psychology from the University of Illinois, Urbana-Champaign.
Ken has over 35 years of executive leadership experience in the medical society arena. He currently serves as the Executive Director, of the Society for Vascular Surgery, an organization of 6,500 members dedicated to the prevention and treatment of vascular disease. Prior to this he served on the Executive Staff of the American Academy of Pediatrics, an organization of 67,000 members dedicated to optimizing the health and well-being of children.
In his various roles Ken has developed and led implementation of 200+ organizational visioning and strategic plans, including the Vision of Pediatrics 2020 project. He also has a strong passion for leadership development. Ken served on the Steering Committee of the AAP Pediatric Leadership Alliance from its inception, and has been a principal curriculum architect, and lead faculty for Leadership programs reaching over 3,000 thousand physicians and allied health professionals with the message and skills to lead.
Ken has an impressive history of volunteer service and leadership in his profession as well as his community including:
Prior to joining the ATS, Ms. Collishaw was the president & CEO of the Community Health Accreditation Program, an independent, not-for-profit accrediting body for community-based health care organizations. Previously, Ms. Collishaw served in executive leadership positions with two professional medical societies–the American Academy of Dermatology and the American College of Cardiology. She was responsible for activities related to science, research, advocacy, quality, and managed the ACC’s annual scientific session.
Following the completion of a Bachelor of Arts in Government from Cornell University, Ms. Collishaw started her career working for the U.S. House of Representatives and then in Battelle Memorial Institute’s Washington office. She earned a Master of Public Policy degree from Georgetown University, is a certified association executive, and past president of the American Association of Medical Society Executives.
Tracy Sereiko, MBA, CAE is a medical association executive with a passion for guiding transformation and innovation in mission-driven organizations amidst dynamic healthcare changes. She leads multidisciplinary teams to deliver results with emphasis on understanding member needs and driving member value. Her 20+ year career extends across strategic planning, governance facilitation, market and brand strategy, membership engagement strategy, educational product development, and technology strategy. Tracy is currently the Chief Executive Officer & Executive Director at the American Academy of Physical Medicine and Rehabilitation (AAPM&R). Tracy has previously held senior leadership roles at SmithBucklin and worked with other non-profits. Tracy has an MBA from Kellogg School of Management at Northwestern University and a BA, Political Science with Honors and International Studies from Northwestern University.
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Dr. Paniagua has served as a course director, clerkship director and internal medicine residency program director at various points during his career in academic medicine prior to joining the staff of the National Board of Medical Examiners (NBME), where he served as Associate Vice President, Assessment Operations & Medical Education. After eight years at NBME Miguel assumed the role of Vice President of Medical Education at the American College of Physicians (ACP). Miguel received his undergraduate degree from Saint Louis University before earning his MD at the University of Illinois College of Medicine, Chicago. Dr. Paniagua completed his internal medicine residency and gerontology & geriatric medicine fellowship at the University of Washington, Seattle. Dr. Paniagua practices consultative Hospice and Palliative Medicine at the Hospital of the University of Pennsylvania and is Adjunct Professor of Medicine in the faculty of the Perelman School of Medicine at the University of Pennsylvania. He is the co-editor of the fifth & sixth edition of “Constructing Written Test Questions for the Basic and Clinical Sciences,” The chapter on “Writing High-Quality Constructed-Response and Selected-Response Items” in Assessment in Health Professions Education (2nd ed.), and the fifth edition of “Essential Practices” (UNIPAC) palliative medicine book series.
Marketa M. Wills, MD, MBA, FAPA, is the CEO/Medical Director of the American Psychiatric Association (APA), becoming the organization’s eighth CEO—and its first Black American and first woman in the role—on June 1, 2024. She leads the 180-year-old professional society with a focus on advancing equitable, high quality, and patient centered mental health care.
Prior to joining APA, Dr. Wills served as Senior Vice President and Chief Medical Officer for Johns Hopkins Health Plans (JHHP), where she led clinical strategy and operations across Pharmacy, Medical Management, Care Management, and Quality Improvement. Her leadership helped drive improved outcomes and cost-effective care for health plan members.
Her career spans roles at McKinsey & Company, Memorial Hermann Hospital System and WellCare Health Plans where she has led efforts around strategy & operations, physician affairs, population health and clinical quality.
She is the co-author of a groundbreaking book entitled “Understanding Mental Illness” which is a practical guide written to educate the public about common mental health and substance use conditions and how to get needed help.
Dr. Wills earned her medical degree from the Perelman School of Medicine at the University of Pennsylvania and completed a residency in adult psychiatry at Harvard’s Massachusetts General Hospital/McLean Hospital program, serving as chief resident in her last year. She also has a master’s in business administration from The Wharton School.
Outside of work, she enjoys fitness, traveling, the arts, and engaging in community services. She is a certified yoga teacher and dedicated meditator.
Executive Vice President, National Health Council
After nearly 30 years of experience working with non-profits across the country, Susan Gaffney joined the National Health Council in March 2020 and is now its Executive Vice President.
Gaffney provides strategic direction for the group’s fundamental work of ensuring that its robust membership is engaged and supported while tackling the critical issues related to chronic health conditions, which are at the core of the NHC’s mission.
Gaffney’s progressive experience in both the health and non-profit sectors allows her to draw on a range of skills and experiences in helping to drive the NHC’s work.
Previously, Gaffney had been the National Director of Membership and Governance at NAMI, the National Alliance on Mental Illness, where she focused on nonprofit governance, compliance, strategy, and member support. She has also worked in a variety of roles in the nonprofit education and health sectors in Washington, DC, New York, and San Francisco including the Department of Child and Adolescent Psychiatry at Columbia University College of Physicians and Surgeons and the Mount Sinai Adolescent Health Center.
Growing up in Long Island, New York, Gaffney is especially proud of her background as a first-generation American who maintains dual citizenship with her family’s ancestral home in Ireland.
Gaffney has significant lived experience as both a patient and caregiver. Swift diagnosis of a rare condition while she was pregnant with her first child proved to be lifesaving. Now a mother of three boys, family is near and dear to her heart. Part of the NHC’s work includes advocating on behalf of family caregivers, and Gaffney understands that as she spent over 10 years helping to care for her own parents during their struggles with chronic health issues.
Gaffney earned a master’s in Nonprofit Management and Public Policy from the Milano School of Policy, Management, and Environment at The New School in New York City, and a bachelor’s in history from St. Bonaventure University. She is certified in Group Facilitation by the Institute of Cultural Affairs and as a Change Management Practitioner by Prosci.
Helen Burstin, MD, MPH, MACP is the Chief Executive Officer of the Council of Medical Specialty Societies (CMSS), a coalition of more than 50 specialty societies representing more than 800,000 physicians. In her role, Dr. Burstin advances the expertise and collective voice of medical specialty societies in support of physicians and the patients they serve.
Dr. Burstin formerly served as Chief Scientific Officer of The National Quality Forum (NQF). Prior to joining NQF, she was the Director of the Center for Primary Care, Prevention, and Clinical Partnerships at the Agency for Healthcare Research and Quality (AHRQ). Prior to joining AHRQ, Dr. Burstin was an Assistant Professor at Harvard Medical School and served as Director of Quality Measurement at Brigham and Women’s Hospital. She is the author of more than 100 articles and book chapters on quality, safety, equity, and measurement. She serves on the American Society of Hematology Research Collaborative Board of Directors and the Oversight Committee of the National Cardiovascular Data Registry (NCDR) of the American College of Cardiology. Dr. Burstin recently joined the Coalition for Trust in Health and Science Board of Directors.
A graduate of the State University of New York at Upstate College of Medicine and the Harvard School of Public Health, Dr. Burstin completed her residency training in primary care internal medicine at Boston City Hospital and fellowship in General Internal Medicine and Health Services Research at Brigham and Women’s Hospital and Harvard Medical School. She is a volunteer preceptor and Clinical Professor of Medicine at George Washington University School of Medicine and Health Sciences. She was awarded Mastership in the American College of Physicians. She is a member of the National Academy of Medicine.