POOLED HOLDING

What POOLED HOLDING does

Mass General Brigham Incorporated is a nonprofit integrated academic healthcare system headquartered in Somerville, Massachusetts, formally established in 1994 as Partners HealthCare System and rebranded in 2019. The system serves 2.5 million patients annually across an integrated network that includes two flagship Harvard Medical School teaching affiliates (Massachusetts General Hospital and Brigham and Women's Hospital), community hospitals, specialty hospitals, rehabilitation facilities, home care, urgent care, primary care practices, and a health insurance plan. It also operates one of the largest hospital-based biomedical research enterprises in the U.S., with nearly $2 billion in annual research funding and over 3,700 ongoing clinical trials, plus graduate medical education with more than 2,500 residents and fellows across 300+ programs.

The system delivers core products including the Patient Gateway patient portal, Virtual Care (24/7 Virtual Urgent Care, Virtual Visits, Online Second Opinions), Clinical Trials access, and Graduate Medical Education. Technology infrastructure includes AI/ML research programs spanning AI scribes, diagnostic imaging AI (via Annalise.ai partnership), generative AI for clinical decision support, foundation models for pathology, predictive analytics models such as ALADYNOULLI (a Bayesian generative model for longitudinal EHR analysis published in Nature), and autonomous agents for cognitive decline detection. The MESH Incubator and Mass General Brigham Innovation division support commercialization through venture capital, licensing, and partnerships. The organization also maintains a dedicated Compliance Office and certifications including HIPAA and GDPR compliance.

Revenue is generated through patient care services and insurance reimbursements (including its own Mass General Brigham Health Plan), supplemented by NIH and ARPA-H research grants and other research funding sources. Distribution is regional (Massachusetts and broader New England), with international patient services extending reach. Five hospitals are nationally ranked by U.S. News & World Report Best Hospitals 2025-2026. The company is private and nonprofit, with no funding rounds or public ticker, and operates as the parent of 22+ wholly-owned operating subsidiaries spanning hospitals, physician organizations, home care, urgent care, specialty pharmacy, and the MGH Institute of Health Professions.

Name

POOLED HOLDING

Legal name

Mass General Brigham Incorporated

Website

https://massgeneralbrigham.org

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Mass General Brigham is a nonprofit integrated academic healthcare system operating five nationally ranked hospitals in Massachusetts and New England, serving 2.5 million patients annually through patient care, biomedical research ($2B budget), and graduate medical education across 300+ training programs.

Ownership category

akta.pro rank

Product category

Integrated Academic Healthcare Delivery

NAICS

Specialty (except Psychiatric and Substance Abuse) Hospitals (622310), Health and Welfare Funds (525120)

SIC

Services-Hospitals (8060)

akta.pro primary industry

Hospital Shared Services, GPOs & System Support Organizations (HLAFAAAO)

Keywords

• Academic healthcare system
• Integrated hospital network
• Patient care services
• Clinical research programs
• Medical education training

Headquarters

HQ city

Somerville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales, Others

Revenue model

1. Patient Care Services: Integrated healthcare delivery across hospitals, specialty centers, primary care, and virtual care services. Revenue generated through patient services, insurance reimbursements, and healthcare delivery.
2. Research Funding and Grants: Significant research enterprise funded through NIH grants, ARPA-H funding, and other research funding sources supporting clinical trials and biomedical research.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

MGB Pooled Holdings manages pooled investment assets for tax-exempt entities within the Mass General Brigham healthcare system. The broader Mass General Brigham organization operates as an integrated academic healthcare system delivering patient care through a network of academic medical centers, community hospitals, specialty hospitals, rehabilitation facilities, and primary care practices, while also conducting biomedical research with a nearly $2 billion annual research budget and operating graduate medical education programs.

Product overview

Mass General Brigham is an integrated academic healthcare system comprising academic medical centers, community hospitals, specialty hospitals, and physician practices. The organization operates as a unified healthcare delivery network rather than a software product company. Key offerings include Patient Gateway (patient portal), Virtual Care services, Graduate Medical Education programs (2,500+ residents/fellows in 300+ programs), and extensive clinical research with over 3,700 ongoing clinical trials and nearly $2 billion in annual research budget. The organization also has significant AI/ML research initiatives spanning diagnostic imaging, clinical decision support, generative AI applications, and predictive analytics for disease detection and treatment optimization.

Differentiator

Problem solved

Functional benefit

Brands

• Patient Gateway: Secure patient portal for managing health, viewing test results, appointments, messaging doctors, renewing prescriptions, and paying bills
• Mass General Brigham Health Plan
• Mass General Brigham Innovation
• Graduate Medical Education
• MGH Institute of Health Professions

Products and services

• Patient Gateway A secure patient portal that enables patients to review test results, manage appointments, message doctors, renew prescriptions, and pay bills.
• Virtual Care Remote healthcare services including 24/7 virtual urgent care, virtual visits for primary and specialty care, and online second opinions for patients across the region.
• Clinical Trials Over 3,700 ongoing clinical trials across the healthcare system accelerating the development and delivery of new treatments and therapies to patients.
• Graduate Medical Education Medical training programs including over 300 residency and fellowship programs across all specialties, training more than 2,500 residents and fellows.
• Mass General Brigham Health Plan Health insurance plan offered by the organization to provide coverage to enrolled members.
• MESH Incubator Innovation and commercialization incubator focused on developing and testing AI and medical technology solutions within Mass General Brigham.
• AI Research Programs Comprehensive AI research programs including AI scribes, diagnostic imaging AI, generative AI for clinical decision-making, and foundation models for pathology and disease prediction.
• Mass General Brigham Innovation Innovation division focused on venture capital, investments, and commercialization of medical technologies developed within the system.
• Pooled Investment Management Management of pooled investment assets for tax-exempt entities within the Mass General Brigham healthcare system, administered by MGB Pooled Holdings.

Quantifiable outcome

• 2.5 million patients cared for annually across the integrated health system
• +2 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability13 records

Feature2 records

Partnerships

One partnership is on record.

• Annalise.aicoreTechnology or Integration · 27 November 2023Mass General Brigham and Annalise.ai collaborate to deploy, develop, and research AI imaging tools. This partnership focuses on advancing AI-powered medical imaging diagnostics and integrating these tools into clinical workflows.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Stanford Health Care: Academic medical center affiliated with Stanford University, known for biomedical research, AI in healthcare, and quaternary care - directly comparable in research scale and innovation positioning.
• Cleveland Clinic: Nonprofit integrated academic health system combining specialty care, research, and education with multiple hospital locations - operates the same integrated delivery model with comparable scale and reputation.
• NewYork-Presbyterian Hospital: Major nonprofit academic hospital system affiliated with Columbia and Cornell, with significant research footprint and tertiary/quaternary care - comparable in size, complexity, and reputation tier.
• Mount Sinai Health System: NYC-based nonprofit integrated academic health system combining multiple hospitals, a medical school, and a major research enterprise - closely comparable scale and structure.
• UCSF Health: West Coast academic health system with top-ranked hospitals, substantial NIH-funded research, and integrated primary/specialty care network - similar operating model with comparable emphasis on research-driven differentiation.
• Cedars-Sinai Medical Center: Large nonprofit academic medical center in Los Angeles with extensive research programs, AI/health-tech initiatives, and physician network - comparable to MGB's specialty care and research profile.
• NYU Langone Health: Major NYC-based nonprofit academic medical system with significant research output, graduate medical education, and an expanding hospital footprint - comparable scale, payer mix challenges, and research ambitions.
• Johns Hopkins Medicine: Academic health system integrating a flagship hospital, research enterprise, and medical school with strong NIH funding and AI/health-data initiatives - closely mirrors MGB's academic research-driven positioning.
• Mayo Clinic: Large nonprofit academic medical center system with a national/international referral base, integrated research enterprise, and graduate medical education pipeline - directly comparable to MGB's academic health system model.
• Penn Medicine (University of Pennsylvania Health System): Ivy-affiliated nonprofit academic health system with multiple hospitals, sizable research enterprise, and integration of payer-provider assets - closely comparable to MGB's structure and strategic positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat7 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/MassGenBrigham
• YouTubeyoutube.com/massgeneralbrigham
• Facebookfacebook.com/MassGeneralBrigham
• LinkedInlinkedin.com/company/mass-general-brigham
• Instagraminstagram.com/massgeneralbrigham

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries22 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about POOLED HOLDING