The alleged victim, Anil Kumar, told police the doctor used a syringe to withdraw the blood to teach him a lesson, Gulf News reported Wednesday.
The accused doctor, Dayasagar Arya, a medical officer at a health center in the state of Bihar, denied the allegation.
"I had a heated exchange of words with the staff after which I slapped him but did not take out blood," he said during a news conference Wednesday.
Kumar said Arya locked him in an examination room and another doctor helped while the blood was being drawn.
Exploding whale video goes viral on Internet
Mathematician offers formula for finding the perfect Christmas tree