|Family:|| Lucius Slicker (father †)|
Elena/Eleanor Slicker (mother)
James "Jimmy" Slicker (brother †)
Lucinda Slicker (sister †)
Teresa Morales (wife)
|Actor:|| Colm Meaney (pilot)|
Jim Knobeloch (series)
Jacob "Jake" Slicker is the town barber who did all of the town's "doctoring" before Dr. Mike came to town.
- An alcoholic though it gets better in the later seasons.
- Was abandoned by his father and mother and forced to raise his siblings.
- Marries Teresa the last half of the final season.
- Plays the concertina
- Pilot - He removes a tooth for Dr. Mike & sends her to Robert E. Played by Colm Meaney.
- Epidemic - Gets sick with Influenza & goes to Dr. Mike only after bleeding himself unsuccessfully.
- The Visitor - first mention of him being drunk
- Law of the Land
- The Healing - gives Loren a truss for his hernia .
- Father's Day
- Bad Water - part of the "rescue team" going to save Dr. Mike & Sully.
- The Great American Medicine Show
- A Cowboy's Lullaby - Helps Colleen with the McCall baby while Dr. Mike is off trapped by a bear.
- Running Ghost
- The Prisoner
- Happy Birthday - He deals with causing the death of Harry Barton by trying to drink it away
- Rite of Passage - Gives Matthew his first shave
- Heroes - tries to tell Dr. Mike how to treat frostbite