Her research focuses on how to apply health economics and health technology assessment (HTA) in the real-world setting as well as how to advance methods in economic evaluation (EE). She has experience conducting EEs using various methods with specific interest in the potential of big data in health economics and HTA to support evidence generation and policy-making process.

She has also collaborated with researchers, health professionals, and policy-makers in various areas to help communicate the value of health initiatives using EE. She has contributed to the training on HTA to support health systems in Asia, Africa, and North America. Dr. Isaranuwatchai is dedicated to the creation and use of evidence in healthcare decision making.