1 - the character portrayed on tv radio and in novels is called "The Doctor". Only Peter Cushing in the films had the character name "Doctor Who" and was addressed by that name.
Ten, they are: The First Doctor- William Hartnell,
The Second Doctor -Patrick Troughton,
The Third Doctor -Jon Pertwee,
The Fourth Doctor -Tom Baker,
The Fifth Doctor -Peter Davison,
The Sixth Doctor -Colin Baker,
The Seventh Doctor -Sylvester McCoy,
The Eighth Doctor -Paul McGann,
The Ninth Doctor -Christopher Eccleston,
The Tenth Doctor -David Tennant.
As of today, (15/04/2017) 12 people have played the Doctor. This total can be raised to 13 if you count the War Doctor.
In the US there are about 8 and a half people per doctor!
5,786,324,000
Ken Tyllssen has: Played Dalek in "Doctor Who" in 1963. Played 1st Sensorite in "Doctor Who" in 1963. Played First Sensorite in "Doctor Who" in 1963. Played Mechonoid in "Doctor Who" in 1963. Played First Scientist in "Doctor Who" in 1963. Played Mechanoid in "Doctor Who" in 1963. Played Assistant in "Doctor in the House" in 1969.
Barney Lawrence has: Played Android in "Doctor Who" in 1963. Played Royal Servant in "Doctor Who" in 1963. Played Guard in "Doctor Who" in 1963. Played Foster in "Doctor Who" in 1963. Played Seabase Guard in "Doctor Who" in 1963. Played Marshman in "Doctor Who" in 1963. Played Sailor on the Shadow in "Doctor Who" in 1963. Played 2nd Kinda Hostage in "Doctor Who" in 1963. Played Dave Culshaw in "Doctor Who" in 1963. Played Guard in "Blakes 7" in 1978. Played Federation Trooper in "Blakes 7" in 1978.
Rex Duis has: Played Daleks in "Doctor Who Online Adventures" in 2009. Played Radio News Reporter in "Diana" in 2009. Played The Fourth Doctor, The Cybermen in "Doctor Who Online Adventures" in 2009. Played Timothy Langden in "Doctor Who Online Adventures" in 2009. Played The Botcheen in "Doctor Who Online Adventures" in 2009. Played The Celestial Toymaker in "Doctor Who Online Adventures" in 2009. Played The Fourth Doctor in "Doctor Who Online Adventures" in 2009. Played Unknown Voice in "Doctor Who Online Adventures" in 2009. Played Robot Voices in "Doctor Who Online Adventures" in 2009. Played Lord President Carridon in "Doctor Who Online Adventures" in 2009. Played War Lord in "Doctor Who Online Adventures" in 2009. Played Computer Voice in "Doctor Who Online Adventures" in 2009. Played The Cybermen in "Doctor Who Online Adventures" in 2009. Played Doctor Cavil, The Cybermen, The Third Doctor in "Doctor Who Online Adventures" in 2009. Played Maxwell, The Tetraps in "Doctor Who Online Adventures" in 2009. Played Cyber Voices in "Doctor Who Online Adventures" in 2009. Played Omega in "Doctor Who Online Adventures" in 2009. Played Daleks, The Foreman in "Doctor Who Online Adventures" in 2009.
200
900
800,000probably ;)
Ruari Mears has: Played 1st Foster Guard in "Doctor Who" in 2005. Played Clone - developing stage in "Doctor Who" in 2005. Played Scarecow in "Doctor Who" in 2005. Played Praygat in "Doctor Who" in 2005. Played Ood in "Doctor Who" in 2005. Played Monk in "Doctor Who" in 2005. Played Time Zombie in "Doctor Who" in 2005. Played Elder Ood in "Doctor Who" in 2005. Played Hath Gable in "Doctor Who" in 2005. Played 2nd Host in "Doctor Who" in 2005. Played Cyber Leader in "Doctor Who" in 2005. Played Pigman in "Doctor Who" in 2005. Played Judoon Captain in "Doctor Who" in 2005. Played Cybershade in "Doctor Who" in 2005. Played Spaceship Guard in "Doctor Who" in 2005. Played Smiler in "Doctor Who" in 2005. Played himself in "Doctor Who Confidential" in 2005. Played Cyberman in "Doctor Who" in 2005. Played himself in "Torchwood Declassified" in 2006. Played Yellow Robot in "The Sarah Jane Adventures" in 2007. Played Heidi Slitheen in "The Sarah Jane Adventures" in 2007. Played Tree Blathereen in "The Sarah Jane Adventures" in 2007. Played Shansheeth in "The Sarah Jane Adventures" in 2007. Played Werewolf Tom in "Being Human" in 2008. Played Tom Werewolf in "Being Human" in 2008. Played Werewolf in "Being Human" in 2008. Played Other Monsters in "Doctor Who at the Proms" in 2009. Played Monster in "BBC Proms" in 2010. Played Cybermen in "Doctor Who: Best of Specials" in 2011. Played Cyberman in "The Women of Doctor Who" in 2012. Played Monster in "BBC Proms" in 2013.
There are Dr. Kildare's with different first names. 1937: Joel McCrea 1938, 1939, 1940, 1941: Samuel S. Hinds 1938, 1939, 1940, 1941, 1942: Lew Ayres 1961, 1963, 1966: Richard Chamberlain 1972, 1973: Mark Jenkins
Murray Grumbar has: Played Arcturus in "Doctor Who" in 1963. Played Dalek in "Doctor Who" in 1963. Played Dalek Machine Operator in "Doctor Who" in 1963. Played Dalek Operator in "Doctor Who" in 1963. Played Mechonoid in "Doctor Who" in 1963. Played Mechanoid in "Doctor Who" in 1963. Played Dining Car Attendant in "Moody and Pegg" in 1974.