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.

HCA Healthcare, Inc., through its subsidiaries, owns and operates hospitals and related healthcare entities in the United States. It operates general and acute care hospitals that offers medical and surgical services, including inpatient care, intensive care, cardiac care, diagnostic, and emergency services; and outpatient services, such as outpatient surgery, laboratory, radiology, respiratory therapy, cardiology, and physical therapy. The company also operates outpatient health care facilities consisting of freestanding ambulatory surgery centers, freestanding emergency care facilities, urgent care facilities, walk-in clinics, diagnostic and imaging centers, rehabilitation and physical therapy centers, radiation and oncology therapy centers, physician practices, and various other facilities. In addition, it operates behavioral hospitals, which provide therapeutic programs comprising child, adolescent and adult psychiatric care, adolescent and adult alcohol, drug abuse treatment, and counseling services. The company was formerly known as HCA Holdings, Inc. HCA Healthcare, Inc. was founded in 1968 and is headquartered in Nashville, Tennessee.

Universal Health Services, Inc., through its subsidiaries, owns and operates acute care hospitals, and outpatient and behavioral health care facilities. It operates through Acute Care Hospital Services and Behavioral Health Care Services segments. The company's hospitals offer general and specialty surgery, internal medicine, obstetrics, emergency room care, radiology, oncology, diagnostic and coronary care, pediatric services, pharmacy services, and/or behavioral health services. It also provides commercial health insurance services; and various management services, which include central purchasing, information, finance and control systems, facilities planning, physician recruitment, administrative personnel management, marketing, and public relations services. Universal Health Services, Inc. founded in 1978 and is headquartered in King of Prussia, Pennsylvania.

Surgery Partners, Inc., together with its subsidiaries, owns and operates a network of surgical facilities and ancillary services in the United States. The company provides ambulatory surgery centers and surgical hospitals that offer non-emergency surgical procedures in various specialties, including orthopedics and pain management, ophthalmology, gastroenterology, and general surgery. It offers diagnostic imaging, laboratory, obstetrics, oncology, pharmacy, physical therapy, and wound care; and ancillary services, including multi-specialty physician practices, urgent care facilities, and anesthesia services. In addition, it offers single- and multi-specialty facilities. Surgery Partners, Inc. was founded in 2004 and is headquartered in Brentwood, Tennessee.

Select Medical Holdings Corporation, through its subsidiaries, operates critical illness recovery hospitals, rehabilitation hospitals, outpatient rehabilitation clinics, and occupational health centers in the United States. It operates in four segments: Critical Illness Recovery Hospital, Rehabilitation Hospital, Outpatient Rehabilitation, and Concentra. The Critical Illness Recovery Hospital segment consists of hospitals that provide services for heart failure, infectious disease, respiratory failure and pulmonary disease, surgery requiring prolonged recovery, renal disease, neurological events, and trauma. The Rehabilitation Hospital segment offers therapy and rehabilitation treatments, including rehabilitative services for brain and spinal cord injuries, strokes, amputations, neurological disorders, orthopedic conditions, pediatric congenital or acquired disabilities, and cancer. The Outpatient Rehabilitation segment operates rehabilitation clinics that provide physical, occupational, and speech rehabilitation programs and services; and specialized programs, such as functional programs for work related injuries, hand therapy, post-concussion rehabilitation, pediatric and cancer rehabilitation, and athletic training services. The Concentra segment operates and provides occupational health centers, telemedicine platforms, onsite clinics, and contract services at employer worksites that deliver occupational health services, consumer health, physical therapy, and preventive care. Select Medical Holdings Corporation was founded in 1996 and is headquartered in Mechanicsburg, Pennsylvania.

AMN Healthcare Services, Inc. provides healthcare workforce solutions and staffing services to healthcare facilities in the United States. It operates through three segments: Nurse and Allied Solutions, Physician and Leadership Solutions, and Technology and Workforce Solutions. The Nurse and Allied Solutions segment offers travel nurse staffing, labor disruption staffing, local staffing, international nurse and allied permanent placement, and allied staffing solutions. The Physician and Leadership Solutions segment provides locum tenens staffing, healthcare interim leadership staffing, executive search, and physician permanent placement solutions. The Technology and Workforce Solutions segment offers language services, vendor management systems, workforce optimization, and outsourced solutions. The company also provides allied health professionals, such as physical therapists, respiratory therapists, occupational therapists, medical and radiology technologists, lab technicians, speech pathologists, rehabilitation assistants, and pharmacists. It offers its services under the brands, including AMN Healthcare, Nursefinders, HealthSource Global Staffing, O'Grady Peyton International, Connetics, Medical Search International, DRW Healthcare Staffing, and B.E. Smith. AMN Healthcare Services, Inc. was founded in 1985 and is headquartered in Dallas, Texas.

Nutex Health Inc. operates as a physician-led, healthcare services, and operations company. It operates through three segments: Hospital, Population Health Management (PHM), and Real Estate. The PHM segment establishes and operates independent physician associations; and offers a cloud-based platform for healthcare organizations to provide value-based care and population health management. The Real Estate segment owns and owns and leases land and hospital building. The Hospital segment develops and operates a network of micro-hospitals, specialty hospitals and hospital outpatient departments which offers 24/7 care. It also provides operational and managerial services, including management, billing, collections, human resources and recruiting, legal, accounting, and marketing. In addition, the company offers healthcare services, including emergency room care, inpatient care, and behavioral health, as well as onsite imaging, such as CT scan, X-ray, MRI, ultrasound, etc.; certified and accredited laboratories; and onsite inpatient pharmacies. The company was founded in 2011 and is based in Houston, Texas.

Community Health Systems, Inc. owns, leases, and operates general acute care hospitals in the United States. It offers general acute care, emergency room, general and specialty surgery, critical care, internal medicine, obstetrics, diagnostic, psychiatric, and rehabilitation services, as well as skilled nursing and home care services. The company also provides outpatient services at primary care practices, urgent care centers, free-standing emergency departments, ambulatory surgery centers, imaging and diagnostic centers, and direct-to-consumer virtual health visits. The company was incorporated in 1996 and is headquartered in Franklin, Tennessee.