Yes. If your father is not competent, then the POA, if he or she believes that your visits are in any way disruptive or disturbing to your father, can forbid yours or anyone else's visits. The POA, if your Father is no longer competent has a fiduciary duty to act "in the best interests " of your father. Should you believe that your POA is acting AGAINST the best interests, if you have reason to believe you father is asking for you and you cannot visit, see an elder law attorney. That attorney will write a "lawyer letter" to the POA asking for visitation, whether supervised or not. You might volunteer to the POA that you are willing to make supervised visits. Best of luck.
Tich1974, what is the back story as to why you believe the Power of Attorney is stopping you from seeing your Dad? Does the POA give a reason? What relationship does the POA have to your father? More information would be helpful.
Should you believe that your POA is acting AGAINST the best interests, if you have reason to believe you father is asking for you and you cannot visit, see an elder law attorney. That attorney will write a "lawyer letter" to the POA asking for visitation, whether supervised or not. You might volunteer to the POA that you are willing to make supervised visits.
Best of luck.