Kurian founded the Sunny Healthcare Group in 1990 and became the chairman in 2000. In July 2024, the group opened a Sunny Health and Wellness Center in Sharjah Healthcare City. In April 2024, the group signed an agreement with the Sharjah Healthcare City to establish a multi-specialty medical complex in several phases. The group also provides homecare services. Kurian is also the founder and chairman of Health2Home, Sunny Wellness, Therapeo Health Care Consultancy, and the Sunny Management Group.