I just went through all this so let me tell you what I know... I too, was very nervous about the MMR as one shot. I decided to split them up and found a pediatrician that was willing to do this. As she got close to one year, the office told me they had to order in bunches of 10 and so basically I would have to pay for 30 shots. I was furious, needless to say, after doing so much research on pediatricians before she was born and spending one whole year on going to this pediatrician that had just lied to me. After all, I was told I could split the shots starting when I interviewed them before my daughter was born, with no mention of paying for 30 shots.
I am a part of a Mom's group through meetup.com, and after posting my fury about what happened, they all suggested switching docs. I asked them for recs and more than 5 of them recommended Dr. Mike Scheade (spelling). He not only breaks up the shots, but he has them stocked in his office and you only pay for the one you are given. My daughter got the mumps shot on Tuesday and will be given the measles in a month and a half and the rubella a short time after that. To be fair, it broke my heart at how much pain she was in from the shot. It seemed to hurt more than the others.
You will def want to ask your doc if he/she splits them and if so, if you will be required to pay for the bunch. If so, you may want to switch docs so you can be on an shot schedule thats right for YOU. If you want more info for Dr. Mike Scheade (spell?), he has offices in Streamwood and Elgin... not sure where else (I think there is at least one other office, but not sure). I think the one in Streamwood says "Associates in Pediatrics" above the door. Personally, I prefer the Elgin office off Randal more. It is a new building and very nice!
Downfall for him- he is very 'popular' and the wait is awful. I've seen him twice now and I waited just short of an hour each time to see him.