Gemstone Holdings Grp Market Analysis: Market Share and Coverage by State

Payer Overview

Gemstone Holdings Grp is the #69 largest US A&H payer by reported premium, writing $2.23B in the US market and holding a 0.15% US market share across 1 states. The company reports an estimated 478.7K covered lives and operates through 2 affiliated subsidiaries, with its strongest market position concentrated in Idaho where it is the market leader.

The firm's US presence is tightly focused: its US premium footprint is limited to a single state, making its commercial scale highly regional. That concentrated position shapes its provider contracting dynamics, local bargaining power, and strategic priorities around that top-ranked state.

Premium by Scope

Gemstone Holdings Grp's premium is entirely derived from the US States & DC scope, with $2.23B reported in that category and no reported premium in US territories or foreign jurisdictions. This exclusive U.S. mainland concentration means provider groups negotiating with the payer should expect contracting terms and network design to be driven by a single-state strategy, emphasizing local market dynamics and state-specific regulatory considerations.

National Market Footprint

Gemstone Holdings Grp's national presence is highly concentrated in the West, with $2.23B of premium written and 479K estimated members located in Idaho. The insurer's market share of 34.58% in that single state indicates substantial local scale, while nationally the company remains a niche player. For provider contracting, the concentration implies that network leverage and reimbursement negotiations will be strongest in Idaho, where the payer represents a large share of local covered lives and premium.

Because the carrier's footprint is confined to one state, multi-state provider groups should treat Gemstone Holdings Grp as a regionally critical counterparty only if they have material operations in Idaho. The payer's concentrated membership pool makes statewide network participation and reimbursement terms especially valuable to providers operating within Idaho.

State-by-State Market Position

Gemstone Holdings Grp's presence is limited to the Mountain West region, specifically Idaho, where it is the top-ranked payer. This western concentration means the West shows the strongest presence, while the Northeast, Southeast, Midwest, and Southwest show no material footprint from this payer. The company's geographic distribution — effectively a single-state stronghold — simplifies contracting strategy for local providers but offers limited value to multi-state networks unless they have substantial Idaho exposure.

Top-ranked status in Idaho positions the payer as a dominant local negotiator for provider reimbursement terms and network design. For multi-state provider groups, the lack of presence outside Idaho reduces strategic importance except where Idaho operations exist. Local provider groups, health systems, and regional ACOs will find the most negotiating leverage and partnership opportunity given the payer's concentrated member base and premium in that market.

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

The largest age band nationally is the 6–18 group, with 88,085 estimated members, followed by the 35–44 and 55–64 bands. Idaho, the only state with reported member estimates, mirrors this distribution, indicating a balanced population across pediatric, adult, and senior segments. There is no evidence of significant skew toward older or younger populations in Idaho; the age profile is broadly representative of a typical commercial insurance population.

Providers should note the substantial pediatric and working-age adult presence, which will influence care delivery patterns and service demand. The relatively even distribution across age bands suggests that GEMSTONE HOLDINGS GRP's insured population requires a wide range of services, from preventive pediatric care to chronic disease management for older adults.

Estimated Members by State

GEMSTONE HOLDINGS GRP's estimated member count is concentrated entirely in Idaho, with 478,725 members. This aligns with the payer's dominant market share in Idaho, where it holds the #1 position with a 34.58% share and the highest premium volume. No other states report member estimates, reflecting the payer's highly localized footprint.

This geographic concentration means that providers in Idaho are likely to encounter GEMSTONE HOLDINGS GRP members frequently, making the payer a critical partner for contracting and care delivery. For providers outside Idaho, the lack of reported members suggests minimal impact from this payer. The alignment between member count and market share rank underscores the importance of Idaho as GEMSTONE HOLDINGS GRP's core market, with implications for network strategy and resource allocation.