Dr Kler is eminent interventional cardiologist and electrophysiologist , he has global repute in leading Heart and Vascular Institute joins Fortis Memorial Research Institute (FMRI) at Gurugram and Fortis Flt Lt Rajan Dhall Hospital at Vasant Kunj.
Dr Kler was the first doctor in India to implant an Implantable Cardioverter Defibrillator, Cardiac Resynchronization Therapy (CRT), and Cardiac Resynchronization Therapy Defibrillator (CRT-D) (Heart Failure Device).