Elmhurst Radiologists provides imaging and radiology services within the healthcare sector. The company offers diagnostic imaging services such as X-rays, CT scans, MRIs, and ultrasound examinations, which assist in the diagnosis and monitoring of medical conditions. They provide services for women's health and cancer screenings. It is based in Elmhurst, Illinois.

Mayo Clinic operates as a healthcare provider with a focus on patient-centered care and medical services. The organization offers a range of services, including diagnosis, treatment of medical conditions, and health information resources. Mayo Clinic also emphasizes medical research, education, and training for healthcare professionals. It was founded in 1864 and is based in Rochester, Minnesota.

Advocate Christ Medical Center is a not-for-profit, 802-bed facility that provides quaternary care and trauma services within the healthcare sector. The center has an internal medicine residency program, supporting the training of interns and residents. It serves as a referral center for various medical specialties. It is based in Oak Lawn, Illinois.

Cleveland Clinic operates as a non-profit, multispecialty academic medical center. It integrates clinical and hospital care with research and education. It provides healthcare services, including outpatient care, primary care, and various subspecialties across its hospitals and family health centers. It was founded in 1921 and is based in Cleveland, Ohio.

University Hospitals provides various medical services through its network of hospitals and outpatient facilities. The organization offers quaternary care, academic medical services, pediatric care, women's health services, and cancer treatment, while also engaging in research and clinical trials. University Hospitals provides medical education programs and serves as an employer in the healthcare sector. It was founded in 1866 and is based in Cleveland, Ohio.

Johns Hopkins Medicine operates as an academic medical center and health system that incorporates patient care, medical education, and research. The organization provides various health care services, including primary and specialty care, outpatient services, long-term care, and home care, and conducts medical research and clinical trials. Johns Hopkins Medicine serves as a health care provider and research institution. It was founded in 1996 and is based in Baltimore, Maryland.