[4] DAHP began with a $500,000 grant from the state of Ohio to address a growing issue with the health care problems of low income citizens.

[5] The DAHP had to raise funds, secure an HMO license and obtain a federal waiver allowing the company to operate solely as a mandatory enrollment plan.

The DAHP would become the first mandatory Medicaid managed care program in 1989[4][6] In 1993 the federal waiver would expire and in order to allow the organization to continue, Congressional action would be required.

In this same year when the economy was down in Dayton, Ohio and major employers like National Cash Register, General Motors, and Delphi closed or left town.

In 2007 employment in the area remained weak, but CareSource saw business growth and became the only Medicaid Managed Care provider to offer services in all 88 counties in Ohio.

That year CareSource broke ground on its new corporate headquarters in Downtown Dayton, showing the company's commitment to the city it was founded in.

[12] In 2010, CareSource announced expansion of its provider network in Southeastern Ohio through a partnership with Quality Care Partners (QCP), a physician-hospital organization (PHO).

[15] After the passing of the Affordable Care Act, CareSource created a product which allowed the company to enter the commercial insurance market.

[19] The constant growth that CareSource experienced with healthcare reform and Medicaid expansion made it the third largest company in the Dayton area again in 2014.

[20] In late 2014 and early 2015 a new division of CareSource was launched to address the other unmet needs of the company's Ohio Medicaid population.

[22] Under VanZant's leadership, the program grew to address other aspects that contribute to a person's health including their housing and economic stability.

[1] In 2020 CareSource became the largest locally owned company by revenue in the Dayton-area after Marathon Petroleum Corp. announced its agreement to sell Speedway to the corporate owner of international convenience store chain 7-Eleven.

[30] In 2019 and 2020, CareSource earned a high quality rating in the Ohio Department of Medicaid (ODM) Managed Care Plans Report Card.

[35] The new office, named the Pamela Morris Center to honor the legacy of its founder,[36] will be located at First and Jefferson streets and be the first new high-rise in downtown Dayton since the company's headquarters opened in 2008.