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| Entity Name | State of Incorporation | Doing Business As |
| BioScrip Infusion Services, Inc. | California | BioScrip Infusion Services |
| BioScrip Infusion Services, LLC | Delaware | BioScrip Infusion Services |
| BioScrip PBM Services, LLC | Delaware | BioScrip PBM Services |
| BioScrip Pharmacy Services, Inc. | Ohio | BioScrip Pharmacy Services |
| CHI Holding Corporation | Delaware | CHI Holding Corporation |
| Chronimed, LLC | Minnesota | Chronimed, LLC |
| CHS Holdings, LLC | Delaware | CHS Holdings, LLC |
| Clinical Holdings, Inc. | Ohio | Clinical Holdings, Inc. |
| Clinical Specialties Network Services of Illinois, Inc. | Ohio | Clinical Specialties Network Services of Illinois, Inc. |
| Clinical Specialties, Inc. | Ohio | Clinical Specialties |
| Crescent Healthcare, Inc. | California | Crescent Healthcare |
| Critical Care Systems of New York, Inc. | New York | Critical Care Systems of New York, Inc. |
| Critical Care Systems, LLC | Delaware | Option Care |
| Critical Homecare Solutions, LLC | Delaware | Critical Homecare Solutions, LLC |
| CSI Managed Care, Inc. | Ohio | CSI Managed Care, Inc. |
| CSI Network Services of Indiana, Inc. | Ohio | CSI Network Services of Indiana, Inc. |
| CSI Network Services of Michigan, Inc. | Ohio | CSI Network Services of Michigan, Inc. |
| Deaconess Enterprises, LLC | Ohio | Deaconess Enterprises, LLC |
| Deaconess HomeCare, LLC | Delaware | Deaconess HomeCare, LLC |
| East Goshen Pharmacy, LLC | Pennsylvania | BioScrip Infusion Services |
| HC Group Holdings II, LLC | Delaware | HC Group Holdings II, LLC |
| HC Group Holdings III, Inc. | Delaware | HC Group Holdings III, Inc. |
| Healthy Connections Homecare Services, Inc. | Texas | Option Care Women's Health |
| Home I.V. Specialists, Inc. | Arkansas | Home IV Specialists |
| HomeChoice Partners, LLC | Delaware | BioScrip Infusion Services |
| InfuScience South Carolina, LLC | Delaware | BioScrip Infusion Services |
| InfuScience, LLC | Delaware | BioScrip Infusion Services |
| Infusion Partners of Melbourne, LLC | Georgia | BioScrip Infusion Services |
| Infusion Partners, LLC | Ohio | BioScrip Infusion Services |
| Infusion Solutions, Inc. | New Hampshire | BioScrip Infusion Services |
| Knoxville Home Therapies, LLC | Tennessee | BioScrip Infusion Services |
| MedNow Infusion, LLC | Delaware | Option Care |
| Naven Health, Inc. | Florida | Naven Health, Inc. |
| New England Home Therapies, Inc. | Massachusetts | BioScrip Infusion Services |
| Option Care Enterprises, Inc. | Delaware | Option Care |
| Option Care Health, Inc. (f/k/a BioScrip, Inc.) | Delaware | Option Care Health, Inc. (f/k/a BioScrip, Inc.) |
| Option Care Home Care, Inc. | Illinois | Option Care |