If you mean the actual Doctor Who character, nobody knows. The audience has never been told the Doctor's date of birth.
If you're referring to the birthday of the first Doctor Who episode released it's 23rd November 1963.
If you're referring to the actor, it depends which actor you're referring to-
1st Doctor, William Hartnell: 8th January 1908.
2nd Doctor, Patrick Troughton, 25th March 1920.
3rd Doctor, Jon Pertwee, 7th July 1919.
4th Doctor, Tom Baker, 20th January 1934.
5th Doctor, Peter Davidson, 13th April 1951.
6th Doctor, Colin Baker, 8th June 1943.
7th Doctor, Sylvester McCoy, 20th August 1943.
8th Doctor, Paul McGann, 14th November 1959.
("War Doctor", John Hurt, 22nd January 1940.)
9th Doctor, Christopher Eccleston, 16th February 1964.
10th Doctor, David Tennant, 18th April 1971.
11th Doctor, Matthew Smith, 28th October 1982.
12th Doctor, Peter Capaldi, April 14, 1958.
Charlie sheen
no
the doctor's proper name
Karen gilan
131 months
it is on the 23rd of november 2013
10 because David Tennant is the 10th Doctor Matt Smith became the 11th Doctor in 2010.
The doctor's companion in 2009 was Amy Pond. The actress's name is Karen Gillan.
yes there has been a comfirmed season 6
Kakashi: September 15th Shikamaru: September 22nd
His new assitant/companion is a woman called Jenna-Louise Coleman :)
any doctor whos gone to med school and graduated