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.

Elevance Health, Inc., together with its subsidiaries, operates as a health benefits company in the United States. The company operates through four segments: Health Benefits, CarelonRx, Carelon Services, and Corporate & Other. It offers a variety of health plans and services to program members; health products; an array of fee-based administrative managed care services; and specialty and other insurance products and services, such as stop loss, dental, vision, life, disability, and supplemental health insurance benefits. The company operates in the pharmacy services business; and markets and offers pharmacy services, including pharmacy benefit management, as well as home delivery and specialty pharmacies, claims adjudication, formulary management, pharmacy networks, rebate administration, a prescription drug database, and member services. In addition, it provides healthcare-related services and capabilities, including utilization management, behavioral health, integrated care delivery, palliative care, payment integrity services, subrogation services, and health and wellness programs, as well as services related to data management, information technology, and business operations. Further, the company is involved in the National Government Services business. The company provides its services under the Anthem Blue Cross and Blue Shield, Wellpoint, and Carelon brand names. The company was formerly known as Anthem, Inc. and changed its name to Elevance Health, Inc. in June 2022. Elevance Health, Inc. was incorporated in 2001 and is headquartered in Indianapolis, Indiana.

The Cigna Group, together with its subsidiaries, provides insurance and related products and services in the United States. Its Evernorth Health Services segment provides a range of coordinated and point solution health services, including pharmacy benefits, home delivery pharmacy, specialty pharmacy, distribution, and care delivery and management solutions to health plans, employers, government organizations, and health care providers. The company's Cigna Healthcare segment offers medical, pharmacy, behavioral health, dental, and other products and services for insured and self-insured customers; Medicare Advantage, Medicare Supplement, and Medicare Part D plans for seniors, as well as individual health insurance plans; and health care coverage in its international markets, as well as health care benefits for mobile individuals and employees of multinational organizations. In addition, it offers permanent insurance contracts sold to corporations to provide coverage on the lives of certain employees for financing employer-paid future benefit obligations. The company distributes its products and services through insurance brokers and consultants; directly to employers, unions and other groups, or individuals; and private and public exchanges. The company was formerly known as Cigna Corporation and changed its name to The Cigna Group in February 2023. The Cigna Group was founded in 1792 and is headquartered in Bloomfield, Connecticut.

McKesson Corporation provides healthcare services in the United States and internationally. It operates through four segments: U.S. Pharmaceutical, Prescription Technology Solutions (RxTS), Medical-Surgical Solutions, and International. The U.S. Pharmaceutical segment distributes branded, generic, specialty, biosimilar and over-the-counter pharmaceutical drugs, and other healthcare-related products. This segment also offers practice management, technology, clinical support, and business solutions to community-based oncology and other specialty practices; and consulting, outsourcing, technological, and other services, as well as sells financial, operational, and clinical solutions to pharmacies. The RxTS segment serves biopharma and life sciences partners, and patients to address medication challenges for patients by working across healthcare; connects patients, pharmacies, providers, pharmacy benefit managers, health plans, and biopharma companies to deliver innovative solutions to help people get the medicine needed to live healthier lives; and provides prescription price transparency, benefit insight, dispensing support, third-party logistics, and wholesale distribution support services. The Medical-Surgical Solutions segment offers medical-surgical supply distribution, logistics, and other services to healthcare providers, including physician offices, surgery centers, nursing homes, hospital reference labs, and home health care agencies. The International segment provides distribution and services to wholesale, institutional, and retail customers in Europe and Canada. McKesson Corporation was founded in 1833 and is headquartered in Irving, Texas.

Cencora, Inc. sources and distributes pharmaceutical products in the United States and internationally. The company's U.S. Healthcare Solutions segment distributes pharmaceuticals, over-the-counter healthcare products, home healthcare supplies and equipment, and related services to acute care hospitals and health systems, independent and chain retail pharmacies, mail order pharmacies, medical clinics, long-term care and alternate site pharmacies, and other customers; provides pharmacy management, staffing, and other consulting services; supply management software to retail and institutional healthcare providers; packaging solutions to institutional and retail healthcare providers; clinical trial support, product post-approval, and commercialization support services; data analytics, outcomes research, and other services for biotechnology and pharmaceutical manufacturers; pharmaceuticals, vaccines, parasiticides, diagnostics, micro feed ingredients, and other products to the companion animal and production animal markets; and sales force services to manufacturers. This segment also distributes plasma and other blood products, injectable pharmaceuticals, vaccines, and other specialty products; and offers other services to physicians who specialize in various disease states, such as oncology, as well as to other healthcare providers, including hospitals and dialysis clinics. Its International Healthcare Solutions segment provides international pharmaceutical wholesale and related service, and global commercialization services; distributes pharmaceuticals, other healthcare products, and related services to pharmacies, doctors, health centers, and hospitals; and offers specialty transportation and logistics services for the biopharmaceutical industry. The company was formerly known as AmerisourceBergen Corporation and changed its name to Cencora, Inc. in August 2023. Cencora, Inc. was founded in 1871 and is headquartered in Conshohocken, Pennsylvania.

Cardinal Health, Inc. operates as a healthcare services and products company in the United States, Canada, Europe, Asia, and internationally. It provides customized solutions for hospitals, healthcare systems, pharmacies, ambulatory surgery centers, clinical laboratories, physician offices, and patients in the home. The company operates in two segments: Pharmaceutical and Specialty Solutions, and Global Medical Products and Distribution. It distributes branded and generic pharmaceutical, specialty pharmaceutical, and over-the-counter healthcare and consumer products, as well as medical supplies. The company also provides services to pharmaceutical manufacturers and healthcare providers for specialty pharmaceutical products; offers pharmacy management services to hospitals; operates pharmacies, including pharmacies in community health centers; and repackages generic pharmaceuticals and over-the-counter healthcare products. In addition, it manufactures, sources, and distributes Cardinal Health branded medical, surgical, and laboratory products and devices that include exam and surgical gloves; needles, syringe, and sharps disposals; compression solution, incontinence, nutritional delivery, and wound care products; single-use surgical drapes, gowns, and apparel products; fluid suction and collection systems; urology products; operating room supply products; and electrode product lines. Further, the company distributes a range of national brand products, including medical, surgical, and laboratory products; provides supply chain services and solutions to hospitals, ambulatory surgery centers, clinical laboratories, and other healthcare providers; and assembles and sells sterile, and non-sterile procedure kits. Additionally, it manufactures, prepares, delivers, and distributes radiopharmaceuticals and related treatments; and optimizes direct shipments through integrated technology solutions. The company was incorporated in 1979 and is headquartered in Dublin, Ohio.

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.

Walgreens Boots Alliance, Inc. operates as a healthcare, pharmacy, and retail company in the United States, Germany, the United Kingdom, and internationally. It operates through three segments: U.S. Retail Pharmacy, International, and U.S. Healthcare. The U.S. Retail Pharmacy segment engages in operation of the retail drugstores, health and wellness services, specialty, and home delivery pharmacy services, which offers health and wellness, beauty, personal care and consumables, and general merchandise. The International segment offers sale of prescription drugs and health and wellness, beauty, personal care, and other consumer products outside the United States; and operates pharmacy-led health and beauty retail businesses under the Boots brand stores in the United Kingdom, the Republic of Ireland, and Thailand, as well as the Benavides brand in Mexico and the Ahumada brand in Chile. The U.S. Healthcare segment provides VillageMD, a national provider of value-based care with primary, multi-specialty, and urgent care providers serving patients in traditional clinic settings, in patients' homes and online appointments; Shields, a specialty pharmacy integrator and accelerator for hospitals; and CareCentrix, a participant in the post-acute and home care management sectors. Walgreens Boots Alliance, Inc. was founded in 1909 and is headquartered in Deerfield, Illinois.