The incident occurred near village Seeh Palson, under Barsana police station area, they said.
Dr. Ratan Singh was en route to his clininc in Deeg town of Bharatpur. He belonged to village Kamai which falls under Barsana police station limits.
"His motorbike was hit by some unknown vehicle, resulting in his death on the spot," police said.
The body has been sent for post-mortem, they said.