Executive Staff Bios

  • Jo Buyske, M.D.
    President & Chief Executive Officer
  • Dr. Jo Buyske has been on staff at the ABS since 2008, initially as an associate executive director and director of evaluation. She was named executive director in 2017, and president and chief executive officer in 2019. Prior to that, Dr. Buyske was chief of surgery and director of minimally invasive surgery at Penn Presbyterian Medical Center in Philadelphia, and faculty at the University of Pennsylvania School of Medicine. Still clinically active, she remains on staff at the university as an adjunct professor of surgery. Her clinical experience focuses on applications of minimally invasive surgery to all areas of general and gastrointestinal surgery.
  • Originally from New Jersey, she attended medical school at Columbia University and completed her general surgery residency at Massachusetts General Hospital in Boston. She began her career at the Lahey Clinic in Burlington, Massachusetts, before coming to Philadelphia.
  • Dr. Buyske is a past president of the Society of American Gastrointestinal and Endoscopic Surgeons and a former ABS director. She was elected to the ABS in 2006, serving on the board of directors for two years before being hired as associate executive director. Dr. Buyske is also on the board of directors of the American Board of Medical Specialties (ABMS), ensuring that the voice of the surgical community is heard in ABMS deliberations. She is certified by the ABS in general surgery.
  • Bruce A. Perler, M.D.
    Vice President
  • Dr. Bruce Perler joined the ABS in 2016, succeeding Dr. Robert Rhodes as Associate Executive Director for Vascular Surgery. He was named vice president in 2019. Dr. Perler is clinically active, and in addition to his ABS position, he is the Julius H. Jacobson II Professor of Surgery and vice chair for clinical operations and financial affairs at Johns Hopkins University, as well as director of the vascular noninvasive laboratory. He previously served for more than a decade as chief of the division of vascular surgery and endovascular therapy, and is the founder and past director of the vascular surgery training program. Originally from New Bedford, Massachusetts, he completed his medical degree at Duke University and his general surgery residency and vascular surgery fellowship at Massachusetts General Hospital.
  • Dr. Perler has served as president of the Society for Vascular Surgery, Southern Association for Vascular Surgery, Eastern Vascular Society, and Chesapeake Vascular Society, and on the executive council of the Association of Program Directors in Vascular Surgery. He is co-editor of Rutherford's Vascular and Endovascular Surgery, 9th Edition and past senior editor of the Journal of Vascular Surgery. Dr. Perler is certified by the ABS in vascular surgery and previously in general surgery.
  • Mary E. Klingensmith, M.D.
    Vice President; Editor-in-Chief, SCORE®
  • Dr. Mary Klingensmith first joined the ABS in 2011 when she was elected to the board of directors, representing the American College of Surgeons. She was later elected to serve as vice chair and chair of the board of directors in 2016 and 2017, respectively. Dr. Klingensmith was named ABS vice president and SCORE® editor-in-chief in 2019. During her tenure as ABS board chair, Dr. Klingensmith oversaw the development and roll out of both the Continuous Certification Program and the pilot of competency-based education using EPAs, while also leading ABS through a strategic planning process, which eventually culminated in a new governance structure for the organization. Since 2009, she has been a member of SCORE's leadership team, most recently serving as president prior to her appointment to editor-in-chief. Originally from Beckley, West Virginia, she completed medical school at Duke University and general surgery residency at Brigham and Women's Hospital.
  • In addition to her ABS and SCORE positions, Dr. Klingensmith is the Mary Culver Distinguished Professor of Surgery and vice chair for education at the Washington University School of Medicine in St. Louis. Formerly director of Washington University's general surgery residency program, she has a long-standing interest in graduate medical education and residency curricula, including the use of simulation and the teaching of ethics in residency education. She is the founding director of the Washington University School of Medicine’s Academy of Educators.
  • Dr. Klingensmith has served as president of the Association for Surgical Education (ASE) and board member of the Association of Program Directors in Surgery (APDS). She currently serves as an associate editor for Annals of Surgery, and has been lead editor of five editions of The Washington Manual of Surgery. Dr. Klingensmith received the Philip J. Wolfson Outstanding Teacher Award from the ASE in 2005, and the Parker J. Palmer Courage to Teach Award from the Accreditation Council for Graduate Medical Education in 2012.
  • Jessica A. Schreader
    Chief Operating Officer
  • Jessica Schreader joined ABS in 1993 as a part-time employee while attending law school. Over the years, she has held many various positions, including Vascular Surgery Examination Coordinator, Hospice and Palliative Medicine Examination Coordinator, Arrangements Coordinator and Operations Manager, prior to her appointment to Chief Operations Officer. In this role, Ms. Schreader works closely with all ABS employees as she oversees ongoing operations and procedures. She also handles contracts and arrangements for all of ABS's examinations and meetings.
  • Ms. Schreader is a graduate of Loyola University and holds a J.D. from Rutgers School of Law.
  • Abby L. Pozefsky, Esq.
    General Counsel and Chief Administrative Officer
  • Abby Pozefsky joined ABS in 2018, assuming the dual roles of ABS general counsel and chief administrative officer. Prior to ABS, Ms. Pozefsky was an important fixture at some major institutions in Philadelphia, serving in capacities that include Philadelphia Water Department General Counsel, Philadelphia Airport General Counsel, Chief Deputy of Regulatory Affairs for the Philadelphia Law Department, General Counsel and Chief Administrative Officer for the Philadelphia Gas Works, Board Secretary for the Philadelphia Facilities Management Corporation and transformation consultant for the Philadelphia School District Legal Department. In addition to her roles at ABS, she currently serves on the Philadelphia Water, Sewer and Storm Water Rate Board.
  • Ms. Pozefsky is a graduate of the University of Pennsylvania and the New York University School of Law.