So..... the reason the judge granted this search warrant was because this prosecutor had "reason to believe" something or another.
Did he have a dream the night before about Limbaugh?? Or maybe he visited Miss Cleo and she told him her visions.
More likely, he was just out to bag himself a political enemy.
For the same reason that police cannot just walk up and search someone's car without a valid reason, so it is that a prosecutor cannot just search someone's doctor records simply because they "have reason to believe" something or another.