In his private and personal life, Dr Dork is...a dork. A dweeb, a dolt, a dummkopf.
Yet in his interactions with his patients, he exudes confidence, charm and reassurance.
This is a conscious decision. This is an aspect of the mask.
This is, in essence, utilizing the Placebo Effect to help his patients.
Dr Dork does not think he is being misleading or deceptive. He gives bad news truthfully, but with some dorky aplomb, he hopes. He ensures his patients are aware of potential pitfalls of treatment options. If he thinks a particular medication might help a particular patient, for example, he uses words such as "could" and "might" as opposed to "will". He gives probability outcomes where there is good evidence for such.
But Dr Dork knows that his subtle, subvocal clues, his body's unspoken language, his demeanour and so forth...have themselves a potentially significant contribution to the healing process. Especially in regards to symptoms of pain, depression, nausea and other scenarios where there can sometimes be a large psychological element contributing.
As strange as it may feel in the hands of a Dork...like any tool at his disposal to help his patients, it is sharpened, oiled, and used to best effect.