T.S.
I originally caught mrsa from my eldest daughter, who was at the time being a belligerent couch-surfing near runaway, and who did finally let me help her with her laundry and moving into a place with some friends. She had mrsa at the time, and I believe I caught it from her laundry. I now have it systemically and occasionally, during times of stress, get a boil or two.
Though it is gross and can be dangerous, it is also something that so many people have now it is not something to be too worried about, as long as you have the tools to deal with it.
Bactroban, or muprocin, is the ointment of choice for external use. If you catch the sore when it is in it's early stages, that can be enough. I am extremely careful when I have an outbreak to use only MY towel and to keep it well covered. To cover it, I find that the special burn bandages--they are like a single piece of translucent gel that sticks onto the skin and absorbs any fluids--are the best, because they are completely waterproof, surround the sore on all sides, and do not cause any sensitivity due to the adhesive. One of the triggers for a sore to develop for me, ironically, can be the adhesive of regular bandaids.
I notice that the sores start out as a tiny red bump that is itchy and somewhat sore as well. You might mistake it for a mosquito bite, but it will be very small and very red, rather than the more typical swelling of a bug bite. If you catch it at that point with muprocin, you may just have it go away.
Another thing to try is colloidal silver liquid or gel--for this, I actually DO use a regular bandaid, because you can soak the pad with this. It is very effective at killing nasty bacteria/viruses, including mrsa, and mrsa cannot develop an immunity to it. Liquid colloidal silver can also be taken internally, which I find to be more effective and much more safe than the sulfa antibiotics offered by Western medicine, if you catch it early. If you wait too long, it will require sulfa on top of that.
To keep the space clean, learn universal precautions and follow them strictly--use gloves whenever you handle this, do not place or touch the gloves, bandages, or anything else to any other surface after they have touched a sore. Keep a bag in the bathroom trash can, and learn how to take gloves off without coming in contact with the outside of them. Keep a spray bottle of bleach/water solution in the bathroom and spray down the bathroom sink, toilet seat (if there is a boil anywhere near the upper legs or bottom), and the bathtub/shower after each use. Keep any sores covered. Wash hands often and thoroughly.
It's a pain, but it can be handled.
And YES, by all means get away from the pediatricians! You need a general practitioner who has experience with this.