Tomblin's office had been waiting on the results of an actuarial study about the state's cost of expansion.
According to that study, expanding Medicaid will provide insurance coverage to about 91,500 state residents.
"Behind all the numbers discussed today are thousands of West Virginians who will benefit greatly from Gov. Tomblin's action. It is the waitress who serves us lunch today, the man working for a small roofing company, the women working at a child care center, the aide at a nursing home," said Perry Bryant, head of West Virginians for Affordable Health Care.
"These are hardworking West Virginians who struggle without health care. Now they will get the coverage they deserve thanks to the leadership of Governor Tomblin," Bryant said in an emailed statement to the Gazette.
The state's costs for expansion will be about $375.5 million from fiscal year 2014 through fiscal year 2023, and will mean an additional $5.2 billion in federal funding for the same time period, according to the actuarial study.
To help with the state's costs for Medicaid, Medicaid recipients will be assessed co-payments according to their income.
The state can make up the money for expanding Medicaid in several ways, officials say.
For instance, the state spends $12 to $15 million each year on uncompensated care, which is the amount that hospitals pay to treat patients who don't pay for care. With Medicaid expansion, the amount the state spends will decrease, officials say. A recent audit of the state's Department of Health and Human Resources identified more than $50 million in savings that can be used for the state's share in Medicaid, officials say.
New Medicaid recipients also will be required to use a managed care organization. These companies are similar to health maintenance organizations (HMOs), and agree to provide most Medicaid benefits to people in exchange for a monthly fee from the state, according to Medicaid.gov.
Enrollment in the expanding Medicaid program will begin Oct. 1 and coverage will begin Jan. 1, 2014.
Reach Lori Kersey at lori.ker...@wvgazette.com or 304-348-1240.