WASHINGTON (AP) — The Supreme Court has refused a group of doctors' request to block implementation of the nation's new health care law.

Chief Justice John Roberts turned away without comment Monday an emergency stay request from the Association of American Physicians & Surgeons, Inc. and the Alliance for Natural Health USA.

They asked the chief justice Friday to temporarily block the law, saying Congress had passed it incorrectly by starting it in the Senate instead of the House. Revenue-raising bills are supposed to originate in the lower chamber. They also wanted blocked doctor registration requirements they say will make it harder for independent non-Medicare physicians to treat Medicare-eligible patients.

Still pending is a decision on a temporary block on the law's contraceptive coverage requirements, which was challenged by a group of nuns.