Assoc.Prof.Ratchaya Lertnawapan graduated medical degree from Ramathibodi Hospital, Mahidol university. She had her residency training in Medicine from the same institute. She finished her sub-specialties in Allergy, Immunology, and Rheumatology. She had her research fellowship in Vanderbilt university, Tennessee USA. Currently, she is working as Allergist and Rheumatologist as Assoc.Prof. at Thammasat University.