| GEISINGER SYSTEM SERVICESLocation not reported, AK · Good Standing | Location not reported, AK | Nonprofit | Nov 12, 2024 | Good Standing |
| International Shared Services, Inc., Colorado Authority Relinquished January 23, 2014Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Nov 18, 2005 | Withdrawn |
| ISS Solutions, Inc.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Oct 19, 2015 | Good Standing |
| Geisinger Medical CenterLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Dec 14, 2021 | Good Standing |
| Geisinger System ServicesLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Apr 26, 2022 | Good Standing |
| Geisinger ClinicLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Oct 11, 2022 | Good Standing |
| Geisinger Health PlanLocation not reported, CO · Good Standing | Location not reported, CO | Nonprofit | Aug 6, 2025 | Good Standing |
| D.G.R. PRODUCTS, L.L.C.Location not reported, CT · Forfeited | Location not reported, CT | LLC | Oct 15, 1998 | Forfeited |
| ISS SOLUTIONS, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 29, 2010 | Active |
| GEISINGER CLINIC INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Feb 14, 2020 | Active |
| GEISINGER SYSTEM SERVICES INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jan 4, 2022 | Active |
| Geisinger Health Plan Inc.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 29, 2024 | Active |
| GEISINGER MEDICAL CENTERLocation not reported, OR · Active | Location not reported, OR | Nonprofit | Feb 25, 2019 | Active |
| GEISINGER CLINICLocation not reported, OR · Active | Location not reported, OR | Nonprofit | Feb 25, 2019 | Active |
| GEISINGER SYSTEM SERVICESLocation not reported, OR · Active | Location not reported, OR | Nonprofit | Dec 22, 2021 | Active |
| GEISINGER PHARMACY, LLCLocation not reported, OR · Active | Location not reported, OR | LLC | Feb 24, 2025 | Active |
| ISS SOLUTIONS, INC.Location not reported, OR · Active | Location not reported, OR | Corporation | Sep 10, 2009 | Active |
| Geisinger Quality Options, Inc.Danville, PA · Not reported | Danville, PA | Corporation | Not reported | Not reported |
| Iss Solutions, Inc.Danville, PA · Not reported | Danville, PA | Corporation | Not reported | Not reported |
| Geisinger HealthDanville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| West Shore Advanced Life Support Services, Inc.Danville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| Camps for Spiffy-kyds, Inc.Danville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| Camp Echo Inc.Danville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| Camp Horizon, Inc.Danville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| Geisinger Community Health ServicesDanville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| Surehealth LlcDanville, PA · Not reported | Danville, PA | LLC | Not reported | Not reported |
| Geisinger Commonwealth School of MedicineDanville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| Hepgen, Inc.Danville, PA · Not reported | Danville, PA | Corporation | Not reported | Not reported |
| Keystone Accountable Care Organization, LlcDanville, PA · Not reported | Danville, PA | LLC | Not reported | Not reported |
| Evangelical-geisinger Health, LlcDanville, PA · Not reported | Danville, PA | LLC | Not reported | Not reported |
| Keystone Health Information Exchange, Inc.Danville, PA · Not reported | Danville, PA | Nonprofit | Not reported | Not reported |
| Haas Werks Rentals, LlcDanville, PA · Not reported | Danville, PA | LLC | Not reported | Not reported |
| Geisinger-hm Joint Venture LlcDanville, PA · Not reported | Danville, PA | LLC | Not reported | Not reported |
| Geisinger Pharmacy, LlcDanville, PA · Not reported | Danville, PA | LLC | Not reported | Not reported |
| Geisinger Accountable Care Organization, LlcDanville, PA · Not reported | Danville, PA | LLC | Not reported | Not reported |
| GEISINGER SYSTEM SERVICES INC.Location not reported, FL · Inactive | Location not reported, FL | Nonprofit | Mar 13, 2009 | Inactive |
| ISS SOLUTIONS, INC.Location not reported, FL · Active | Location not reported, FL | Corporation | May 23, 2011 | Active |
| GEISINGER QUALITY OPTIONS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jun 24, 2015 | Inactive |
| GEISINGER HEALTH PLAN, INC.Location not reported, FL · Active | Location not reported, FL | Nonprofit | Jun 25, 2015 | Active |
| GEISINGER INDEMNITY INSURANCE COMPANYLocation not reported, FL · Inactive | Location not reported, FL | Corporation | Jun 24, 2015 | Inactive |
| GEISINGER CLINIC INC.Location not reported, FL · Active | Location not reported, FL | Nonprofit | Nov 14, 2017 | Active |
| GEISINGER SYSTEM SERVICES INC.Location not reported, FL · Active | Location not reported, FL | Nonprofit | Dec 13, 2017 | Active |
| GEISINGER MEDICAL CENTER, INC.Location not reported, FL · Active | Location not reported, FL | Nonprofit | Jun 22, 2022 | Active |
| GEISINGER PHARMACY, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Sep 15, 2023 | Active |