2009 - Present Chairman and Managing Director at Medanta- The Medicity

2007 - 2009 Senior Consultant, Cardio Vascular Surgery at Apollo Hospitals, Sarita Vihar

1988 - 2007 Executive Director and Chief Cardiothoracic and Vascular Surgeon at Escorts Heart Institute and Research Institute

1991 - Present Personal Surgeon at The President of India

1994 - Present Honorary Consultant at Cromwell Hospital, London, UK

1997 - Present Honorary Visiting Professor, Cardiovascular Surgery at LPS Institute of Cardiology

1997 - Present Honorary Consultant, Cardiothoracic Surgery at Armed Forces Medical Services

2000 - Present Honorary Visiting Professor of Surgery at Bangladesh Medical College, Dhaka

1981 - 1988 Assist Professor of Surgery at New York University Medical Center, New York, USA

1971 - 1974 Clinical Instructor in Surgery at New York University Medical Center, New York, USA

1971 - 1974 Teaching Assistant in Surgery at New York University Medical Center, New York, USA

1979 - 1988 Attending Cardiothoracic Surgeon at New York University Medical Center, New York, USA

1979 - 1988 Attending Cardiothoracic Surgeon at New York Infirmary-Beekman Downtown Hospital, New York, U.S.A

Lal Bahadur Shastri National Award conferred by President of India, for excellence in Public Administration, Academics and Management for the year

Life Time Achievement Award - by the International Society of Cardiovascular Ultrasound.

Dr. B. C. Roy National Award for the year in the category of “Eminent Medical Person.

Jewel of India in the Millennium by the International Award Committee of Wisitex Foundation

Rashtriya Ratan Award - Presented by United Indians for outstanding services, achievements and contributions in chosen field.

AMA Physician's Recognition Award by The CME Alliance at ISMICS-2001, Munich, Germany.

4th Sat Paul Mittal Annual Oration presented by Nehru Sidhant kender Trust & Dayanand Medical College & Hospital, Ludhiana

Sir Syed National Awards from Mehfil-e-Sanam, Urdu Monthly

Indira Gandhi Millennium Award from All India Feroze Gandhi Memorial Society

IMA Dr. K. Sharan Cardiology Excellence Award from Indian Medical Association

Life Time Achievement Award from International Medical Integration Council in recognition of the pioneering work done in developing new surgical techniques.

Medical Council of India (MCI)

International Society for Minimally Invasive Cardiac Surgery

Society of Thoracic Surgeons of U.S.A.

Scientific Council of the American College of Angiology, U.S.A.

Royal Society of Medicine, London

American College of Surgeons, USA.

International Medical Sciences Academy

International Society for Minimally Invasive Cardiac Surgery, Minneapolis, USA

Heart Surgery Forum”, Charlottesville, VA, USA

Association of Thoracic and Cardiovascular Surgeons of Asia

European Association for Cardio-thoracic Surgery.

Indian Industries - Healthcare Industry Committee

Indian Health Care Federation

Ministry of Health and Family Welfare, Govt. of India

Vice Chairman, Services Export Promotion Council, Govt. of India.

Member, Task Force on Skill Development, XIth Five Year Plan, Planning Commission, Govt. of India

Member, Governing Council TIFAC (Technology Information, Forecasting & Assessment Council), New Delhi Member

Institute Body of Sanjay Gandhi Post Graduate Institute of Medical Sciences

Governing Council of Sri Jayadeva Institute of Cardiology, Bangalore, India.

5133 Haryana State Medical Council, 2010