Mark Miller

Mark Miller is the father of Dean Miller.

History
Mark's son, Dean, came into the practice to see Cooper. While Cooper was examining him, he told Cooper that he had a girlfriend and he was going to have sex with her. Cooper pushed condoms on him because he knew that Dean was HIV positive. Dean was unaware of his condition because his parents refused to tell him. When he was diagnosed, they thought he wouldn't live long enough to understand, so they told him he had a kidney condition and most of his symptoms were side effects of the HIV cocktail.

Unable to tell Dean's parents about his intent to have sex and unable to tell Dean about his HIV status, Cooper called Dean's parents into his office and told them he believed it was time to tell Dean. They refused and warned him not to overstep his boundaries.

Desperate to prevent Dean from passing HIV to another kid, Cooper called the whole family into his office and told Dean's parents that he was planning to have sex with his girlfriend. They asked him to leave the office so they could talk to Dean. They told him about his HIV status, but he angrily told Cooper that it was too late and they'd already had sex. His father also attacked Cooper and knocked him down.

The next day, Dean came into the practice with his parents, his girlfriend, and her parents. He said they had a lot of questions. Cooper invited them back to his office to answer them.

Romantic
He is married to Robin Miller.

Familial
His son, Dean, has HIV. Not wanting to tell him that, they told him he had a kidney condition.