I'm considering writing a character who works as a pharmaceutical rep. I have met a few, and I know the basics of the job itself.
Good Start
But I wanted to know more about the travel involved. How big is a typical territory, how often does he cover the circuit, how long is a typical stay in a given city, how does he choose which doctors/facilities to visit, how many facilities will he visit in a given area, etc.
It depends on what they are selling. Some medicines are specific to certain specialties and so the good rep will spend their week scheduling and travelling to all the specific specuialists in that territory. The more specific the med, the bigger the territory, perhaps as large as a medium sized state. Those reps might spend 5 nights a week in motels.
The more general the med, the more Drs might prescribe it, the smaller the territory so the rep can feasibly make their rounds. Those reps might have a city, or a part of a city if it's a metropolis and might be home almost every night.
Some Drs never meet with reps at all and don't accept samples (fairly rare).
Some might just leave instructions for reps to leave samples and literature. (moderately rare to slightly common)
Some might meet with the rep if and when there's down time. Often downtime means, "Bring lunch for the office and I'll squeeze in talking to you at lunch. If you don't bring lunch, then since I need to eat, I'll be gone when you try to talk to me since I'll be out to lunch. However, understand that I can't guarantee that I'll be there if an emergency pops up." (the norm)
Some Drs will bump patients to talk to reps. Often those Doctors are expecting something from the rep, like a golf excursion or fancy dinner at a restaurant or an outright bribe. (fairly rare as far as I know)
An absolute no-no for reps would be to touch another rep's samples. Samples are often the only way to treat patients with crappy insurance and getting the samples to treat them is the only reason some Dr's even talk to reps.
Another one would be to make inappropriate comments, offers or gestures to the staff. I have called companies and told them this or that rep is no longer welcome in my office.
I had one rep actually ask me, "What can I do for you to get you to prescribe more of my drug?"
I answered, "Have a better drug that doesn't only have esoteric applications."
I thought about calling the company to ban that rep, but since it wasn't a blatant attempt at a bribe I didn't. I did call about some that actually offered cash or made creepy lewd comments to staff and they said the guys were creeping them out.