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.

Tenet Healthcare Corporation operates as a diversified healthcare services company in the United States. The company operates through two segments: Hospital Operations and Services, and Ambulatory Care. Its general hospitals offer acute care services, operating and recovery rooms, radiology and respiratory therapy services, clinical laboratories, and pharmacies. The company also provides intensive and critical care, and/or coronary care units; cardiovascular, digestive disease, neurosciences, musculoskeletal, and obstetrics services; outpatient services, including physical therapy; tertiary care services, such as cardiothoracic surgery, complex spinal surgery, neonatal intensive care, and neurosurgery services; quaternary care services in heart and kidney transplants; and limb salvaging vascular procedure, acute level 1 trauma, intravascular stroke care, minimally invasive cardiac valve replacement, imaging, surgical robotic, and telemedicine access services. In addition, it offers a range of procedures and services, such as orthopedics, total joint replacement, and spinal and other musculoskeletal procedures; gastroenterology; pain management; otolaryngology; ophthalmology; and urology. It operates hospitals, ambulatory surgery centers, imaging centers, surgical hospitals, off-campus emergency departments, and micro-hospitals. Tenet Healthcare Corporation was founded in 1967 and is headquartered in Dallas, Texas.

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.

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.

Ardent Health Partners, Inc. owns and operates a network of hospitals and clinics that provides a range of healthcare services in the United States. It operates acute care hospitals, including rehabilitation hospitals and surgical hospitals. The company was founded in 2001 and is based in Brentwood, Tennessee. Ardent Health Partners, Inc. is a subsidiary of EGI-AM Investments, L.L.C.

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.

SurgePays, Inc., together with its subsidiaries, operates as a financial technology and telecom company in the United States. It operates through three segments: Mobile Virtual Network Operators, Comprehensive Platform Services, and Lead Generation. The company offers subsidized and non-subsidized mobile virtual network operators for internet connectivity through mobile broadband services to consumers; ACH banking relationships and fintech transactions platform to convenience stores; wireless top-up transactions and wireless product aggregation; and lead generation and case management solutions primarily to law firms in the mass tort industry, as well as call center activities. SurgePays, Inc. is headquartered in Bartlett, Tennessee.

Inspire Veterinary Partners, Inc. owns and operates veterinary hospitals in the United States. The company specializes in small animal general practice hospitals, which serve companion pets, canine, and feline breeds, including equine care. Its hospitals provide preventive care for companion animals consisting of annual health exams and parasite control; dental health; nutrition and body condition counseling; neurological examinations; radiology; bloodwork; and skin and coat health, and other breed specific preventive care services. It also offers surgical services, which include soft tissue procedures, such as spays and neuters, mass removals, splenectomies, gastropexies, orthopedic procedures, and other surgical offerings; and care and alternative procedures, such as acupuncture, chiropractic, and other health and wellness services. The company was incorporated in 2020 and is based in Virginia Beach, Virginia.