Payer Overview
MASS GEN BRIGHAM HLTH PLAN GRP Market Analysis: Market Share and Coverage by State
Mass Gen Brigham Health Plan Group is a regional health insurer concentrated in Massachusetts, focused on employer and member coverage within its home market. Its scale and operations favor local provider negotiations and network strategies.
Payer Overview
Mass Gen Brigham Health Plan Group operates as a regional health insurer anchored in Massachusetts and plays a focused role in employer and member coverage across its footprint. As the #72 ranked US A&H payer by premium, it reports $2.22B in US premium and a US market share of 0.15%, reflecting a concentrated but meaningful presence in its home state and select markets. The plan reports estimated total members of 341.1K and operates through 2 affiliated subsidiaries.
The payer's commercial scale is tightly concentrated in Massachusetts, spanning 1 states and exposing its business primarily to a single-state marketplace. The company does not report premium in US territories or foreign jurisdictions, and its strategic focus suggests contracting and network negotiations will be driven by Massachusetts market dynamics rather than multi-state considerations.
2 rows
| Subsidiary | Domicile |
|---|---|
| Mass Gen Brigham Health Insurance Company | MA |
| Mass Gen Brigham Health Plan Inc | MA |
National Market Presence
National Market Footprint
| State | Market Share | Premium Written | Estimated Members |
|---|---|---|---|
| MA | 6.31% | $2.22B | 341.1K |
| National Total | — | $2.22B | 341.1K |
Mass Gen Brigham Health Plan Group's footprint is highly concentrated in Massachusetts, where it writes $2.22B in premium and holds a 6.31% market share. The payer's estimated membership base is 341.1K, all located in MA. This concentration means the company's negotiating leverage, provider network design, and utilization trends will be driven by Massachusetts market dynamics rather than national patterns.
Given the single-state concentration, national providers and multi-state health systems should treat this payer as a localized contracting opportunity. Large multi-state groups seeking scale with this payer will need to rely on their Massachusetts presence or affiliate arrangements, as the payer does not provide premium exposure across other states.
State-by-State Market Position
Mass Gen Brigham Health Plan Group shows its strongest presence in the Northeast, specifically in Massachusetts where it is a meaningful regional player. There is no material presence in the Midwest, South, West, or Southwest according to reported data. The concentration in a single state simplifies contracting focus: multi-state provider groups must prioritize Massachusetts relationships or partner with local systems to capture membership from this payer.
For provider contracting strategy, the payer's single-state footprint suggests negotiations should emphasize Massachusetts-specific utilization trends, regional reimbursement benchmarks, and local referral patterns. Systems without a Massachusetts presence should weigh the costs of market entry against incremental membership growth, while Massachusetts-based providers can view the payer as a significant local counterparty given its 341.1K members and $2.22B in premium.
Estimated Member Demographics
| Age Band | Massachusetts | National Total |
|---|---|---|
| Under 6 | 18882 | 18882 |
| 6–18 | 49228 | 49228 |
| 19–25 | 35542 | 35542 |
| 26–34 | 44596 | 44596 |
| 35–44 | 46811 | 46811 |
| 45–54 | 46086 | 46086 |
| 55–64 | 49882 | 49882 |
| 65–74 | 29325 | 29325 |
| 75+ | 20723 | 20723 |
The largest age bands nationally are 55–64 (49,882 members), 6–18 (49,228 members), and 35–44 (46,811 members), indicating a strong presence among both families with children and pre-retirement adults. The distribution is relatively balanced across working-age adults, with a notable pediatric segment as well.
All estimated members are concentrated in Massachusetts, with no significant membership reported in other states. This means the demographic profile does not vary by state, and there is no evidence of a skew toward older or younger populations in any other region.
Estimated Members by State
MASS GEN BRIGHAM HLTH PLAN GRP's estimated membership is overwhelmingly concentrated in Massachusetts, with approximately 341,075 members. No other state or territory reports a significant member count for this payer, reflecting its highly localized market presence.
This geographic concentration aligns with the payer's market share, which is highest in Massachusetts. For providers, this means that contracting and care delivery strategies should be tailored to the Massachusetts market, with little need to consider multi-state member flows or regional variation. The payer's influence and member base are deeply rooted in the Massachusetts healthcare ecosystem.