UnitedHealth Group Incorporated operates as a diversified health care company in the United States. The company operates through four segments: UnitedHealthcare, Optum Health, Optum Insight, and Optum Rx. The UnitedHealthcare segment offers consumer-oriented health benefit plans and services for national employers, public sector employers, mid-sized employers, small businesses, and individuals; health care coverage, and health and well-being services to individuals age 50 and older addressing their needs; Medicaid plans, children's health insurance and health care programs; and health and dental benefits, and hospital and clinical services, as well as health care benefits products and services to state programs caring for the economically disadvantaged, medically underserved, and those without the benefit of employer-funded health care coverage. The Optum Health segment provides care delivery, care management, wellness and consumer engagement, and health financial services patients, consumers, care delivery systems, providers, employers, payers, and public-sector entities. The Optum Insight segment offers software and information products, advisory consulting arrangements, and managed services outsourcing contracts to hospital systems, physicians, health plans, governments, life sciences companies, and other organizations. The Optum Rx segment provides pharmacy care services and programs, including retail network contracting, home delivery, specialty and community health pharmacy services, infusion, and purchasing and clinical capabilities, as well as develops programs in the areas of step therapy, formulary management, drug adherence, and disease/drug therapy management. UnitedHealth Group Incorporated was founded in 1974 and is based in Minnetonka, Minnesota.

Humana Inc., together with its subsidiaries, provides medical and specialty insurance products in the United States. It operates through two segments, Insurance and CenterWell. The company offers medical and supplemental benefit plans to individuals. It has a contract with Centers for Medicare and Medicaid Services to administer the Limited Income Newly Eligible Transition prescription drug plan program; and contracts with various states to provide Medicaid, dual eligible, and long-term support services benefits. In addition, the company provides commercial fully-insured medical and specialty health insurance benefits comprising dental, vision, life insurance, and other supplemental health benefits, as well as administrative services only products to individuals and employer groups; military services, such as TRICARE T2017 East Region contract; and engages in the operations of pharmacy benefit manager business. Further, it operates pharmacies and senior focused primary care centers; and offers home solutions services, such as home health, hospice, and other services to its health plan members, as well as to third parties. The company sells its products through employers and employees, independent brokers and agents, sales representatives, and digital insurance agencies. The company was formerly known as Extendicare Inc. and changed its name to Humana Inc. in April 1974. Humana Inc. was founded in 1961 and is headquartered in Louisville, Kentucky.

Centene Corporation operates as a healthcare enterprise that provides programs and services to under-insured and uninsured families, commercial organizations, and military families in the United States. The company operates through Medicaid, Medicare, Commercial, and Other segments. The Medicaid segment offers health plan coverage, including medicaid expansion, aged, blind, disabled, children's health insurance program, foster care, medicare-medicaid plans, long-term services and support. This segment also provides healthcare products. The Medicare segment offers special needs and medicare supplement, and prescription drug plans. The Commercial segment provides health insurance marketplace product for individual, small, and large group commercials. It also operates clinical healthcare and pharmacies, as well as offers dental and speech therapy services. In addition, the company engages in the government contracts business under the TRICARE program and other healthcare related government contracts. It provides services through primary and specialty care physicians, hospitals, and ancillary providers. Centene Corporation was founded in 1984 and is headquartered in Saint Louis, Missouri.

Amedisys, Inc., together with its subsidiaries, provides healthcare services in the United States. It operates through three segments: Home Health, Hospice, and High Acuity Care. The Home Health segment offers a range of services in the homes of individuals for the recovery of patients from surgery, chronic disability, or terminal illness, as well as prevents avoidable hospital readmissions through its skilled nurses; nursing services, rehabilitation therapists specialized in physical, speech, and occupational therapy; and social workers and aides for assisting its patients. The Hospice segment offers services that is designed to provide comfort and support for those who are dealing with a terminal illness, including cancer, heart disease, pulmonary disease, or Alzheimer's. The High Acuity Care offers essential elements of inpatient hospital, skilled nursing facility care, and palliative care to patients in their homes. Amedisys, Inc. was incorporated in 1982 and is headquartered in Baton Rouge, Louisiana.

Alignment Healthcare, Inc., a tech-enabled Medicare advantage company, operates consumer-centric health care platform for seniors in the United States. It provides customized health care designed to meet the needs of a diverse array of seniors through its Medicare advantage plans. The company was founded in 2013 and is based in Orange, California.

Astrana Health, Inc., Inc., a physician-centric technology-powered healthcare management company, provides medical care services in the United States. It operates through three segments: Care Partners, Care Delivery, and Care Enablement. The company is leveraging its proprietary population health management and healthcare delivery platform, operates an integrated, value-based healthcare model which empowers the providers in its network to deliver care to its patients. It offers care coordination services to patients, families, primary care physicians, specialists, acute care hospitals, alternative sites of inpatient care, physician groups, and health plans. The company's physician network consists of primary care physicians, specialist physicians and extenders, and hospitalists. It serves patients, primarily covered by private or public insurance, such as Medicare, Medicaid, and health maintenance organization plans; and non-insured patients. The company was formerly known as Apollo Medical Holdings, Inc. and changed its name to Astrana Health, Inc. in February 2024. Astrana Health, Inc. was incorporated in 1985 and is headquartered in Alhambra, California.

MediaAlpha, Inc., through its subsidiaries, operates an insurance customer acquisition platform in the United States. It optimizes customer acquisition in various verticals of property and casualty insurance, health insurance, and life insurance. The company was founded in 2014 and is headquartered in Los Angeles, California.

ModivCare Inc., a technology-enabled healthcare services company, provides a suite of integrated supportive care solutions for public and private payors and their members. The company operates through four segments: Non-Emergency Medical Transportation (NEMT), Personal Care, Remote Patient Monitoring (RPM), and Corporate and Other. The company offers risk underwriting, contact center management, network credentialing, claims management, and non-emergency medical transport management services for Medicaid or Medicare eligible members, whose limited mobility or financial resources hinder their ability to access necessary healthcare and social services. It also provides in-home personal care services, such as bathing, personal hygiene, grooming, oral care, dressing, medication reminders, meal planning, preparation and feeding, housekeeping, transportation services, prescription reminders, and assistance with dressing and ambulation services through placing non-medical personal care assistants, home health aides, and skilled nurses primarily to Medicaid patients in need of care monitoring and assistance in performing daily living activities, including senior citizens and disabled adults. In addition, the company offers remote patient monitoring solutions, including personal emergency response systems, vitals monitoring, medication management, and data-driven patient engagement solutions. It serves federal, state, and local government agencies, MCOs, commercial insurers, private individuals, and health systems. The company was formerly known as The Providence Service Corporation and changed its name to ModivCare Inc. in January 2021. ModivCare Inc. was incorporated in 1996 and is headquartered in Denver, Colorado.