From 1989 to 1994, he worked at the Sree Chitra Tirunal Institute of Medical Science and Technology (SCTIMST), where he gained prominence by performing India’s first beating heart surgery. In 1994, he moved to Abu Dhabi to develop a cardiac centre under the U.A.E. Ministry of Health, which became a major cardiac care hub for the region.

Dr. Nazer has achieved several milestones, including cerebral aneurysm repair under circulatory arrest, beating heart surgery without bypass, and the first successful ECMO in an adult in Kerala. He has held teaching positions at institutions like SCTIMST and Gulf Medical College, and has contributed to developing centres of excellence in cardiac care.

His leadership was evident in establishing the cardiac centre at Al-Mafraq Hospital, bringing top surgeons from Australia and North India. He also played a key role in creating the Kerala Institute of Medical Sciences and the Travancore Medicity teaching hospital in Kerala.

Throughout his career, Dr. Nazer has emphasised care for the underprivileged, collaborating with various organisations for philanthropic initiatives. His contributions have earned him numerous accolades, including features in prestigious publications and the Sheikh Hamdan Bin Rashid Al Maktoum Award. He remains committed to advancing sustainable healthcare and evidence-based medicine globally.