I'm obviuously not a qualified attorney, but it's a possibility your clinic can legally refuse to renew your Endocet prescription because you moved to an area known for problems with the sale and abuse of prescription pain medications (opiods). The feds have been cracking down on areas known for "pill mills" that over-prescribe and even illegally sell pain meds. For example, this link ( (removed) ) illustrates one method authorities in Florida are using to fight the epidemic. An unfortunate side effect of the war on illegal prescription drugs, however, is that some people who are in legitimate pain and need medication will be unable to have it prescribed to them.
It's smart to speak with a lawyer in your area and ask about the legality of being denied medication you need based on the demographics of where you live. Each state's laws on the subject are different. Good luck.