The U.S. could be short as many as 94,000 doctors over the next decade, a new report claims.

The report from the American Association of Medical Colleges projects a shortage ranging from 61,700 to 94,700, and says there will be a specific shortage of doctors with surgical specialties. The nonprofit argues that an aging population and attrition as older physicians retire will be the main reasons for the shortage.

The nonprofit includes accredited medical schools in the U.S. and Canada, and teaching hospitals. The group said in a press release that more money from Congress is needed for an additional 3,000 new residency positions a year for the next five years.

The report, which updates findings from last year, projects that by 2025 there will be a shortfall of up to 35,600 primary care doctors, and non-primary care doctors are expected to have a shortfall of up to 60,300.

It also projects that if underserved patients had barriers to getting treatment removed, the U.S. would actually need 96,000 new doctors today to help meet their needs.

"When you consider all the people who do not utilize health care — despite their need — because of financial, cultural, social or geographic barriers, the physician shortage is actually much bigger," said Darrell Kirch, MD, the group's president and CEO.