The Witch Doctor - Lemon Drop Novella Collection, Vol. 1, #1

Not only does Eartha Bartlett, the last of a powerful line of witches in the hidden town of Blue Hollow, have to deal with the aftermath of the messiest breakup in the history of the town, she has to contend with her well-meaning coven using magic to set her up with someone new. Unfortunately, not only is Eartha in no mood for a blind date chosen by ritual, this person is an outsider. The secrecy of Blue Hollow is the town's top priority, but that doesn't stop Eartha's coven from luring the man there.
Now, at the behest of the stern mayor, Eartha has to babysit someone suddenly introduced to the magical, the weird, and a completely unfamiliar society. Zac Jenner is a paramedic with a life that's going nowhere. His bills are piling up, he can't afford his apartment, and not a single job he applied for has responded. Until he receives an offer to take over a general practice in a town called Blue Hollow.
It's a great offer, but there are two problems: the first is that he never applied for the job, and the second is that he's not a doctor. Zac accepts the offer anyway - keeping his lack of credentials to himself - anticipating a quiet life and easy money. Instead, he finds that Blue Hollow is full of the oddest people and people-shaped creatures, unique medical challenges, and a grumpy physician's assistant named Eartha who makes his seriously consider ending his bachelorism.