A. Yes, it is a scam.
There is no such special Health Insurance Card under the Affordable Care Act. Do not give out your credit card or banking information to get such a card.
Other hoaxes include claiming to be from Medicare call and ask you for personal or financial information, telling you that the information is required under Obamacare. It is not. Also, someone might knock your door claiming to help you sign up for the health insurance policies. Of course they will ask for your personal or financial information. Do not give that out.
Whenever in doubt, check the official website healthcare.gov, or report the scam to FTC.