| John Carter |
Age: 32
Birth date: June 4, 1970
From: Chicago
Parents: Jack [name has also been stated as Roland] and Eleanor Carter
Siblings: Bobby, older brother (deceased); Barbara, older sister.
Other relatives/notables: Millicent "Gamma" Carter, grandmother; Jonathan Truman Carter Sr., grandfather (deceased); Branch, uncle; Chase, Douglas, A.C., Eliot, Bob, Keith, Susan, Margaret, Sara, Jodie, Jeff, Barry, cousins; Branch and Everett, uncles.
Children: None
- Love Life:
- Maid - Carter lost his virginity at age 11 to one of his maids.
- Liz - Carter had a brief fling with Liz, a prostitute who hung around the hospital, in season 1. He got an STD from her.
- Harper Tracy - A fellow med student, they dated throughout season 2. Things were rocky after she slept with Doug, and she eventually moved to Texas.
- Abby Keaton - Carter and Dr. Keaton, a pediatric surgeon, had short-lived relationship in season 3. It ended when she transferred to Pakistan.
- Anna Del Amico - Carter and Anna never really developed a relationship, although they did have feelings for each other. However, they did share a kiss in season 4. Anna admitted to not being fully over her last boyfriend, and moved back to Philadelphia to be with him.
- Laura Brown - Carter and Laura, a second year medical student, went out once in season 4.
- Roxanne Please - Carter and Roxanne, an insurance saleswoman, met at the hospital in season 5, after he treated an injury of hers. They had a short-lived relationship.
- Lucy Knight - They never had a full-fledged relationship either. They shared one kiss, but realized that a doctor-med student relationship was inappropriate.
- Elaine Nichols - Carter also dated his cousin's ex-wife, Elaine, after she came into the ER with an injury. Their relationship was strained after she was diagnosed with breast cancer, and went to Europe to sort out her feelings.
- Rena Trujillo - Carter and Rena, a child life specialist, began dating in late season 7. Their relationship was strained when Carter found out that Rena was 19, and he didn't want anyone to know he was dating someone so young, and they broke up after she accused him of having a crush on Abby.
- Susan Lewis - Carter and Susan began dating in mid season 8 but broke up after determining that they had little chemistry.
- Abby Lockhart - There was a lot of flirting between them in season 7, and their close friendship contributed to the breakup of Abby and Luka. They shared their first kiss at the end of season 8 and are still going strong in season 9.
- Hospital Positions:
- Med Student - Carter was a third year med student in season 1. He spent most of his time in the ER and surgery.
- Surgical Sub-Intern - Carter was Dr. Benton's sub-intern in season 2, again spending most of his time in surgery and the ER. He also did a brief pediatrics rotation with Dr. Ross before graduating.
- Surgical Intern - In season 3, Carter was an intern on Dr. Benton's surgical team. He switched to Dr. Hick's team later in the year, but eventually realized surgery wasn't where he belonged.
- ER Intern - After Carter switched to the ER, he was forced to redo his internship in season 4.
- ER Resident - In seasons 5 and 6, Carter was a second and third year resident, respectively. He is now a fourth year resident in season 7.
- ER Chief Resident - After Dr. Chen resigned, Carter was offered the chief residency in early season 8.