Dr Olievera is excellent, knowledgable specialist in his field of hematology. He was consulted on a critically ill patient with hematological abnormality and was very helpful with his recommendations, which brought this young patient to a complete recovery without complications. Dr Olievera was prompt in recognizing the emergency of situation, potential complications and did excellent job in terms of urgency of care. He came to see the patient right away, very early in the morning and took care of the problem. I was glad my patient got to be in such good hands.