Psychiatric hospitals are part of the hospital infrastructure serving more than 62 million Americans having Medicare Part A insurance coverage.  More than 6,200 hospitals of all kinds, having over 927,000 beds in total, were participating in the Medicare program in the 2020 calendar year.  Psychiatric hospitals accounted for about 9.9% of those hospitals and 6.6% of those hospital beds.  

In the 2020 calendar year, the five-state Great Lakes region of the U.S. was home to 102 psychiatric hospitals, with over 8,170 beds, that were participating in the Medicare program.  As such, the region was home to about 14.7% of the nation's Medicare Part A enrollment and about 14.2% of the Medicare program's psychiatric hospital beds.  Here is a state-level look at Medicare psychiatric hospital beds in the Great Lakes region of the U.S.:

Medicare Psychiatric Hospital Beds in the Great Lakes Region

	# Part A Enrollees		# Hospitals	# Beds
Illinois	2,246,603		16	2,069
Indiana	1,282,040		29	1,419
Michigan	2,099,433		14	1,648
Ohio	2,368,612		31	2,382
Wisconsin	1,200,220		12	1,145
Region	9,196,908		102	8,663
National*	62,498,751		613	61,129
% of National	14.7%		16.6%	14.2%

* National totals include U.S. territories

Data Source:  CMS Program Statistics, Table: MDCR PROVIDERS 4. Medicare Providers:  Number of Medicare Certified Hospitals and Skilled Nursing Facilities, and Number of Beds, by State, Territories, Possessions, and Other, Calendar Year 2020