[4][5] Geisinger operates ten hospitals, a medical school, and Life Flight, an air ambulance service.

[citation needed] From 2001 through mid 2015, Glenn Steele served as Geisinger's president and chief executive officer (CEO).

Ryu formerly served as the health system's executive vice president and chief medical officer since 2016.

As part of the deal, Geisinger would operate as an independent subsidiary, folded into a new non-profit group called Risant Health;[11][12] the transaction was completed on March 31, 2024.

[15] The organization offers internal health insurance plans to the public within its coverage area.

[20][21] In 2018, Geisinger introduced a program that drives patients unable to arrange their own transportation to medical appointments or pharmacies.

[22] Geisinger incorporates electronic health records (EHRs) and genomics into its healthcare practices.

[23] By 2002, it was using Tel-a-Nurse, a service that allowed patients to call and receive medical advice from nurses informed by EHRS.

[26] In 1967, Geisinger was awarded a federal grant to study the effectiveness of medications to prevent heart attacks or their recurrence.

[27] In 1974, the Central Pennsylvania Chapter of the Arthritis Foundation awarded a grant to Geisinger to study the potential treatment of Raynaud syndrome with drugs normally used to treat high blood pressure at that time.

[28] Geisinger has a database of electronic health records (EHR), and set up a genetics research program called MyCode in 2007.

[26] Geisinger contributed data from 35,000 of its patients to a 2016 Johns Hopkins University study that demonstrated linkages between asthma and fracking.

[37] Geisinger Commonwealth School of Medicine received a $3.4 million grant from the federal government in 2017 to promote diversity and provide opportunities for disadvantaged communities.

Geisinger Healthplex State College is a clinic with 41 exam rooms and a surgical suite.

[45] Geisinger collaborates with Mount Nittany Medical Center, and Life Flight is contracted with Centre Lifelink EMS.

In December 2012, it was announced that Geisinger Health System and Lewistown Hospital had signed a letter of intent for a merger.