|Occupation||Physician (Smallville Medical Center)|
|Played By||Julian Christopher|
Dr. MacIntyre is a doctor at Smallville Medical Center.
- In Leech, he treated Clark Kent for bruised ribs. Clark was amazed to learn that it might take weeks for them to heal, but later said that it wasn't nearly as bad as exposure to green kryptonite.
- In Nicodemus, he treated James Beels and Jonathan Kent for their exposure to the Nicodemus flower.
- In Vortex, he treated Lionel Luthor's back injury and recommended against the eye surgery.
- In Precipice, he treated Helen Bryce for severe injuries following her beating from Paul Hayden.