you're going to need a dietician to evaluate your nutritional needs as you go through treatment and to determine how much supplements you'll require. So your insurance company will need to cover at least one visit.
To secure the PEG, we used either an ace or kling wrap, tape caused all kinds of rashes.

caregiver to spouse, 55 yrs, dx 9/09 SCC BOT, T2N0,nonsmoker, nondrinker, HPV 16+ ,Lt hemiglossectomy, lt modified radical neck dissection, lt tonsillectomy,PEG 11/08 removed 2/09, 30IMRT, CT neg 4/09, neg CT 10/09