I have just come to find out the admissions coordinator signed all of the paperwork for my mother. As her medical POA, I was not even aware of this. At the time of the signed paperwork my mother was still mentally stable and aware. 2 days after the admissions guy signed these docs (which I was unaware of at the time), I had my mom sign a legal document with a notary present and she was fully aware and able to sign herself. He simply signed a squiggly line and checked a little box that said "Resident is with me and is aware I am signing on his/her behalf". The nursing home never asked me to sign anything, which in retrospect is strange. This has got to be fraud right?
I think you need to consult an attorney with your question.
If indeed you are acting POA for your mother, and she has not signed this to someone else then you are able, as POA, to pay for legal attorney to check all of this out.
You seem to have other questions regarding your mother and her nursing home administation and insurance problems.
We cannot know what is happening in your particular case, as not much of what you are saying is normal or making any sense without a whole lot of history.
Do consult an attorney in your area with your Mother. Many will make visits to the nursing home where she resides. Have your POA document, and your bank work and record keeping with you when you meet with the attorney. Also have proof that someone else is signing as her POA.
https://www.agingcare.com/questions/can-a-snf-forego-my-moms-private-insurance-and-start-using-her-secondary-medicaid-insurance-without-484804.htm?orderby=recent
IMO a Medical POA does not sign admitting paperwork. The Financial POA does because they are the ones who can confirm the bills will be paid. But, your Mom seems to be competent to sign her own stuff she should have at least initialed it. That I would question.
If Mom is competent, your medical POA is not in effect. Read ur POA, it probably needs a doctor or two to declare Mom incompetent for it to be in effect.
Since Mom is competent to make her own decisions your Medical POA is not needed. The doctors and Nurses will talk to Mom. Its up to Mom to tell u what they say.