His areas of specialty include retardation of chronic kidney disease, hypertension, diabetic kidney disease, vasculitis, glomerulonephritis, general nephrology, dialysis and renal transplantation. In 1991, Dr Ekachai was awarded the Colombo Plan Scholarship in UK. He received advanced training in nephrology and hypertension at the University of Minnesota, under the directorship of Professor Thomas H. Hostetter, Past President of the American Society of Nephrology (ASN). Dr Ekachai is certified in internal medicine and nephrology by the American Board of Internal Medicine (ABIM). He is also certified in transplantation and critical care medicine by Mayo Clinic, USA.