- Society of Thoracic Surgery (Fellow)
- American College of Surgeons (Fellow)
- American College of Cardiology (Fellow)
- American College of Chest Physicians (Fellow)
- Pennsylvania Association for Thoracic Surgery
- Treasurer 2001 – 2004
- Vice President 2004 – 2005
- President 2005 – 2006
- Executive Council 2006 – 2009
- American Medical Association
- American Association for Physician Leadership
- American Association of Healthcare Executives
- Heart Valve Society of America (Concluded 2018)
- General Thoracic Surgery Club (Concluded 2014)
- Pennsylvania Medical Society (Concluded 2014)
- Lehigh County Medical Society (Concluded 2014)
- Board of Trustees 2005 –2014
- Vice President 2006 – 2007 and 2010 – 2011
- President 2008 – 2009
- Florida Society of Thoracic and Cardiovascular Surgeons (Honorary Member)
Dr. Singer has been in practice since 1992 and has, to date, performed over 8000 surgeries. His practice interests include complex valve, coronary and aneurysm surgery, as well as prevention and treatment of lung cancer.
