V. R. Henderson
From Tardis Wiki, the free Doctor Who reference
Dr. Henderson was a medical doctor who worked at Ashbridge Cottage Hospital. He took care of the Third Doctor during his stay at the hospital and was astounded by his test results. He noted that the Doctor had a binary vascular system and an unidentifiable blood type, making him initially believe one of his colleagues had pulled a prank on him. (DW: Spearhead from Space)
