Caresource Group Market Analysis: Market Share and Coverage by State

Payer Overview

Caresource Group operates as a leading regional health insurer with a concentrated but significant national footprint. The company is the #17 largest US A&H payer by premium and writes $11.97B in the US market, representing a 0.83% US market share across 7 states. The organization reports an Estimated Total Members base of 1.7M and operates through 7 affiliated subsidiaries, reflecting a structure that supports both scale and local market focus.

Caresource Group's strongest positions are clustered in a handful of Midwestern and adjacent states, which helps explain why a large share of its premium and membership is geographically concentrated rather than evenly spread across the country. This concentrated footprint suggests the payer prioritizes depth in select state markets rather than broad national retail penetration.

Premium by Scope

Caresource Group's premium is entirely concentrated in the US States & DC scope according to the authoritative data provided. The payer does not report premium in US territories or foreign jurisdictions, so its footprint is exclusively U.S. mainland. For providers, this concentration means negotiations and network strategies can be focused on a limited set of states where the payer controls most of its commercial and government business.

Caresource Group's premium is highly concentrated, with $8.60B written in Ohio alone and the national total at $11.97B. This concentration means that national contracting levers will be disproportionately influenced by the payer's relationships and rate structures in Ohio and the neighboring Midwestern states. Providers negotiating with Caresource Group should prioritize engagement in Ohio and Indiana, where scale is largest, while maintaining targeted strategies in Georgia and West Virginia to capture regional opportunities.

The membership distribution mirrors premium concentration, with 1.17M estimated members in Ohio accounting for the bulk of the payer's membership book. For health systems and multi-state provider groups, this geographic concentration simplifies network strategy by focusing operational and contracting resources on a limited set of high-impact states rather than a wide, dispersed national footprint.

State-by-State Market Position

Caresource Group shows its strongest presence in the Midwest, led by Ohio and Indiana, which together account for the majority of premium and membership. The Southeast presence is more modest but notable in Georgia, while Appalachia exposure comes through West Virginia and Kentucky. There is minimal presence in the Carolinas and Arkansas.

The Affordable Care Act (ACA) established federally-facilitated health insurance marketplaces ("exchanges") where individuals and small businesses can shop for and enroll in health plans, often with income-based subsidies. Issuers that participate in these marketplaces are required to report enrollment, claims, and denial data to CMS (Centers for Medicare & Medicaid Services) each year.

The sections below cover this payer's ACA marketplace-specific footprint — enrollment, plan portfolio, and claims/denial-rate data. This is a narrower, separate population from the NAIC-based commercial data shown earlier on this page (total premium, market share, and membership across all lines of business): ACA marketplace enrollment is typically a small fraction of a payer's total commercial book, and the two datasets should not be treated as equivalent. CMS claims-transparency reporting has also been inconsistent industry-wide since 2020 — many issuers have little or no data for 2021 onward, so a single reporting year is common and does not necessarily indicate anything about the payer's current ACA presence.

Estimated Member Demographics

Nationally, the largest age bands are 6–18 (271,848 members), 55–64 (247,148 members), and 45–54 (237,632 members), indicating a strong presence among children, adolescents, and pre-seniors. Ohio, as the dominant state, mirrors this distribution, with the highest counts in these age bands. States like Georgia and Indiana also show substantial numbers across all age groups, while smaller states such as North Carolina and Arkansas have much lower member counts.

There is no state with a pronounced skew toward older age bands; most states follow the national pattern, with the largest segments in children and working-age adults. This suggests CARESOURCE GRP's membership is primarily composed of families and individuals in Medicaid and Marketplace populations, with relatively fewer seniors compared to commercial or Medicare-focused payers.