2. How do I try out new masks? Can I just make an appt w/ my sleep physician's office for this express purpose? (That is, will they be surprised when I call and say I want to try out a bunch of masks?) Are there other places to go to try out masks?
Where did you get your CPAP machine and the initial mask you have? That is the office to contact regarding trying other masks. Usually, it is a durable medical equipment (DME) supplier. I like to try out masks a the office of the DME to which my sleep specialist's office sent my prescription and sleep study and that provided the CPAP machine and initial mask, as that DME has been very helpful. From what I have read here, I have been lucky in that regard.
Usually, the office that does your sleep study either sends you to a specific DME supplier or they give you a written prescription for a mask and machine with pressure settings and a list of DMEs. If you have insurance, you can call your insurance company to find out what DMEs they cover for CPAP equipment.
DME reps will come to your house and bring your equipment and set it up, but I prefer to go to the DME's office because the DME that comes to the house is likely to only bring a few masks, whereas the DME's office has more masks. I make an appointment and tell them what masks I'd like to try and why I want to switch masks (i.e. what is uncomfortable about the current mask and what I am looking for in a new mask). My DME's office has been very helpful in suggesting masks, as well as letting me try the masks suggested by this forum and ones that I have found using the mask selection guide on cpap.com.