Number of people, by county, enrolled in Medicaid expansion Enrollment as of March 23, by county, in the state's Medicaid expansion program, which is called Healthy Michigan: ALPENA, 2,057 ANTRIM, 1,418 CHARLEVOIX, 1,360 GRAND TRAVERSE, 4,275 IRON, 706 KEWEENAW, 116 MACKINAC, 619 MIDLAND, 4,275 ONTONAGON, 374 OTSEGO, 1,700 UNKNOWN, 618(asterisk) (asterisk) County may be unknown due to the homeless population or changes in address that are currently in process. Michigan Department of Community Health.