| SEIU Healthcare Illinois Indiana | Related tax-exempt org | Contributing employer | — | — |
| 71ST and Exchange OPCO | Related taxable corporation/trust | Contributing employer | — | — |
| Abbington Village | Related taxable corporation/trust | Contributing employer | — | — |
| Albany Careinc | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Debes | Related taxable corporation/trust | Contributing employer | — | — |
| Alden DES Plaines Rehab & Health Care Ctrinc | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Estates of Barrington | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Estates of Orland Park | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Lakeland Rehab & Health Care Ctrinc | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Lincoln Park Rehab & Health Care Ctrinc | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Northmoor Rehab & Health Care Ctrinc | Related taxable corporation/trust | Contributing employer | — | — |
| Alden of Waterford LLC | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Park Strathmoor INC | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Princeton Rehab & Health Care Center | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Town Manor Rehab & Care Ctrinc | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Village North | Related taxable corporation/trust | Contributing employer | — | — |
| Alden Wentworth Rehab& Health Care Ctrinc | Related taxable corporation/trust | Contributing employer | — | — |
| Aliya on 87TH | Related taxable corporation/trust | Contributing employer | — | — |
| ALL American Village | Related taxable corporation/trust | Contributing employer | — | — |
| Ambassador Nursing & Rehab Centerinc | Related taxable corporation/trust | Contributing employer | — | — |
| Aperion Care Burbank | Related taxable corporation/trust | Contributing employer | — | — |
| Aperion Care Dolton | Related taxable corporation/trust | Contributing employer | — | — |
| Aperion Care Evanston | Related taxable corporation/trust | Contributing employer | — | — |
| Aperion Care Forest Park | Related taxable corporation/trust | Contributing employer | — | — |
| Aperion Care Highwood | Related taxable corporation/trust | Contributing employer | — | — |