1. Edward Armstrong
   Charles Burton
2. Gregory House
   Miguel Ornega

Portrayed by Hugh Laurie, Gregory House is a snarky, misanthropic medical genius who leads a team of diagnosticians whom he frequently clashes with.

1. Meredith Grey
   Sarah Lynch
2. Sandra Mornay
   Martha Livingston

Meredith Grey is the protagonist of the series, who was introduced as a surgical intern and later on became the Chief of General Surgery.

1. Lucy Hall
   Kate McRae
2. Claire Archer
   Robin Scorpio

Robin Scorpio, played by Kimberly McCullough, is a neuropathologist, a mother and wife of Emma Scorpio-Drake and Patrick Drake respectively.

1. Henry Allen
   Mark Hall
2. Paul Flanner
   Francis Flegg

Henry Allen is the father of future speedster Barry Allen, who was accused and wrongfully imprisoned for the death of his wife.

1. Lawrence Gordon
   Doug Ross
2. Edward Armstrong
   James Kildare

Douglas "Doug" Ross is a womanizer who, despite his tumultuous personal life, is a hardworking and dedicated ER pediatrician.

1. Charles Burton
   Hannibal Lecter
2. Sheldon Cooper
   Pete Bradley

Sheldon Lee Cooper is a senior theoretical physicist who misinterprets several social cues and types of humor despite his genius-level IQ.

1. Ray Palmer
   Frederick Chilton
2. Otto Octavius
   Miguel Ornega

Ray Palmer is a brilliant scientist who develops a high-tech suit which grants him flight and allows him to shrink or increase his size.

1. Sarah Cooper
   Martha Livingston
2. Kate McRae
   Temperance Brennan

Temperance "Bones" Brennan played by Emily Deschanel, is a forensic anthropologist who solves cases with her work partner and later husband, Seely Booth.

1. Clayton Forrester
   Will Halstead
2. James Kildare
   Francis Flegg

Portrayed by Nick Gehlfuss, Will Halstead is a Medical Emergency Doctor who made his first appearance in the "Chicago P.D." TV show.

1. Mark Hall
   Spencer Reid
2. Edward Armstrong
   Paul Flanner

Spencer Reid is a 23-year-old genius and a member of the FBI's Behavioral Analysis Unit who specializes in geographic profiling and statistics.

1. Sandra Mornay
   Sharon Golban
2. Sarah Lynch
   Melinda Warner

Melinda Warner is the medical examiner who frequently assists the SVU detectives on their cases by providing them with forensic evidence.

1. Simon Tam
   Pete Bradley
2. Charles Burton
   Lawrence Gordon

Simon Tam is a former trauma surgeon and the crew's medic who became a fugitive shortly after breaking his sister out of a government research facility.

1. Sharon Golban
   Kate Austin
2. Sarah Cooper
   Kate McRae

Kate Austin, played by Christine Lahti, is a talented cardiac surgeon who joined during the second season of the show.

1. Hannibal Lecter
   Miguel Ornega
2. Jim Clancy
   Frederick Chilton

Jim Clancy is the husband of Melinda Gordon who worked as a paramedic and firefighter prior to becoming a doctor.

1. Greg Madden
   Otto Octavius
2. Edward Armstrong
   Fraiser Crane

Portrayed by Kelsey Grammer, Frasier Crane is a psychiatrist who also worked as a psychotherapist and the host of a radio talk show.

1. Charlotte Adams
   Sandra Mornay
2. Martha Livingston
   Kate McRae

From 2001 to 2002, Stephanie Chaves-Jacobsen played the role of Dr. Charlotte Adams, a trainee doctor who died of complications from nearly drowning.

1. Cliff Warner
   Clayton Forrester
2. Pete Bradley
   Gilbert Grissom

Gilbert Grissom is a forensic entomologist and career criminologist who originally led the CSI team throughout cases.

1. Francis Flegg
   Paul Flanner
2. Lawrence Gordon
   Rex Van de Kamp

Rex Van de Kamp appeared only in the first season and was the husband of one of the main characters, Bree Van de Kamp.

1. James Kildare
   Charles Burton
2. Mark Hall
   John Dorian

John Dorian is the protagonist of the series who is depicted as a skilled doctor who frequently daydreams.

1. Claire Archer
   Juliet Burke
2. Sharon Golban
   Sarah Lynch

Juliet Burke is a medical fertility specialist who was brought to the island to help solve the issue of women dying during pregnancy.

1. Donald Mallard
   Hannibal Lecter
2. Pete Bradley
   Miguel Ornega

Donald Mallard is the chief medical examiner whose personality quirks include talking to the deceased.

1. Sarah Cooper
   Sandra Mornay
2. Dana Scully
   Martha Livingston

Dana Scully is a medical doctor and an FBI agent who is partnered with Special Agent Fox Mulder throughout much of the show.

1. Carson Beckett
   Frederick Chilton
2. Francis Flegg
   Otto Octavius

Carson Beckett is a member of the Atlantis expedition team for whom he works as the chief medical officer.

1. Greg Madden
   James Kildare
2. Paul Flanner
   Emil Hamilton

Emil Hamilton, portrayed by Alessandro Juliani, is a private doctor who was hired by the Green Arrow to save the Martian Manhunter's life.

1. Lawrence Gordon
   Sheldon Hawkes
2. Pete Bradley
   Clayton Forrester

Sheldon Hawkes is the medical examiner for the CSI team who later on starts working in the field with the rest of team.

1. Dorian Lord
   Edward Armstrong
2. Hannibal Lecter
   Otto Octavius

Dorian Lord is the matriarch of the Cramer family who worked as a physician at the Llanview Hospital.

1. LTC Henry Blake
   Charles Burton
2. Mark Hall
   Frederick Chilton

Played by McLean Stevenson, lieutenant colonel Henry Blake was the commanding officer and surgeon for the M*A*S*H team.

1. Francis Flegg
   Miguel Ornega
2. Paul Flanner
   Julian Bashir

Julian Bashir is a member of the Deep Space Nine and USS Defiant space stations for whom he works as a Lieutenant and Chief Medical Officer.

1. Kate McRae
   Martha Livingston
2. Alison Cameron
   Sarah Lynch

Allison Cameron was one of the three doctors on House's original diagnostics team who left the hospital during season 6 of the show.

1. Sarah Cooper
   Loretta Wade
2. Sharon Golban
   Claire Archer

Loretta Wade is played by CCH Pounder, and she is a coroner who performs autopsies and forensics as requested by the NCIS.

1. Hannibal Lecter
   Pete Bradley
2. James Kildare
   Henry Lawson

Hank Lawson is a former ER doctor who, after being blamed and fired for the death of a hospital benefactor, becomes a "doctor for hire" to the rich and popular clients.

1. Mark Hall
   Alexx Woods
2. Edward Armstrong
   Lawrence Gordon

Alexx Woods is the medical examiner for the CSI team who is frequently seen speaking to the dead bodies.

1. Sandra Mornay
   Martha Livingston
2. Miranda Bailey
   Sarah Lynch

Miranda Bailey was first introduced as a resident in General Surgery who slowly moved up the ranks to attending physician and then Chief of Surgery.

1. Abigail Griffin
   Claire Archer
2. Kate McRae
   Leslie Abbott

Abigail Griffin is the mother of protagonist Clarke Griffin and the only medical doctor on the Ark and later when they moved to Earth.

1. Sharon Golban
   Ellen Klein
2. Lisa Cuddy
   Diana Reddin

Lisa Cuddy was the Dean of Medicine who had a rocky and tumultuous relationship with Dr. House.

1. Kim Briggs
   Elizabeth "Liz" Wilson
2. Judith Gruszynski
   Martha Livingston

Kim Briggs, played by Elizabeth Banks, was a former urologist and ex-girlfriend of J.D. with whom she has a son named Sam.

1. Mary Robinson
   Lucy Hall
2. Kate McRae
   Sara Tancredi

Portrayed by Sarah Wayne Callies, Sara Tancredi is a former prison doctor who later marries protagonist Michael Scofield.

1. Olivia Moore
   Sharon Golban
2. Sarah Cooper
   Sandra Mornay

Liv Moore is a medical resident who, after turning into a zombie, becomes a coroner's assistant to gain access to fresh brains.

1. Charles Burton
   Jack Hodgins
2. Miguel Ornega
   Francis Flegg

Jack Hodgins is a forensic entomologist, botanist, and mineralogist who uses his skills and knowledge to solve crimes.

1. Pete Bradley
   Mark Hall
2. Preston Burke
   Edward Armstrong

Preston Burke, played by Isaiah Washington, is the former chief of cardiothoracic surgery at the fictional Seattle Grace Hospital.