Assoc. Prof. Thaschawee Arkachaisri serves as the Head and Senior Consultant in the Rheumatology and Immunology Service at KK Women's and Children's Hospital. He brings specialized expertise in pediatric rheumatology and immunology, providing advanced care for children with complex rheumatic and immunological conditions. His extensive qualifications include certifications from the American Board of Pediatrics, Allergy/Immunology, and Pediatric Rheumatology, reflecting his commitment to excellence in patient care and medical education.

Beyond his clinical responsibilities, Assoc. Prof. Arkachaisri is actively engaged in research, with interests in understanding the characteristics and outcomes of childhood-onset rheumatic diseases, particularly enthesitis-related arthritis. He has also contributed to the development of localized scleroderma outcome measures, aiming to improve treatment approaches and patient outcomes in this field.