While important, this is immaterial to the NBC article. The PE firms CUT the number of employees in ER rooms in this paper, so having more doctors wouldn't actually help out the problem that the NBC article is describing.

"The increased deaths in emergency departments at private equity-owned hospitals are most likely the result of reduced staffing levels after the acquisitions, which the study also measured, said Dr. Zirui Song, a co-author and associate professor of health care policy and medicine at Harvard Medical School."

The issue with American healthcare is the profit-seeking capitalists.