Does a healthcare power of attorney give the first person listed power over financial decisions as well?

Question Details: My dad suffered a heart attack recently. He left a healthcare power of attorney listing my sister first, then me second. The POA says it's for health care decisions and that he doesn't want to rbe evived. Does a healthcare POA give her control over any financial decisions involving his bank account? She took it to the bank and was able to be added as a signer to his account. Do I have just as much right to be added as a signer as well?

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