Sources: 476,000 Obamacare applications filed

WASHINGTON (AP) — Administration officials

say about 476,000 health insurance applications have been filed through


and state exchanges, the most detailed measure yet of the

problem-plagued rollout of President Barack Obama's signature


However, the officials continue to refuse to

say how many people have actually enrolled in the insurance markets.


enrollment figures, it's unclear whether the program is on track

to reach the 7 million people projecting by the Congressional

Budget Office to gain coverage during the six-month sign-up


Obama's advisers say the president has been frustrated by the flawed rollout. During one of his daily health care briefings

last week, he told advisers assembled in the Oval Office that the administration had to own up to the fact that there were

no excuses for not having the website ready to operate as promised.

The president is expected to address the problems on Monday during a health care event at the White House. Cabinet members

and other top administration officials will also be traveling around the country in the coming weeks to encourage sign-ups

in areas with the highest population of uninsured people.

The first three weeks of sign-ups have been

marred by a cascade of computer problems, which the administration says

it is

working around the clock to correct. The rough rollout has been a

glaring embarrassment for Obama, who invested significant

time and political capital in getting the law passed during his

first term.

The officials said technology experts from inside and outside the government are set to work on the glitches, though they

did not say how many workers were being added.

Officials did say staffing has been increased at call centers by about 50 percent. As problems persist on the federally run

website, the administration is encouraging more people to sign up for insurance over the phone.

The officials did not want to be cited by name and would not discuss the health insurance rollout unless they were granted