| HPHC of New England INC | Related tax-exempt org | Health insura | MA | 042663394 |
| Tufts Health Plan Foundation INC | Related tax-exempt org | Grant making | MA | 261374263 |
| Tufts Health Public Plans INC | Related tax-exempt org | HMO | MA | 800721489 |
| Point32health INC | Related tax-exempt org | Healthcare | MA | 814089215 |
| Care Partners of Connecticut INC | Related tax-exempt org | HMO | CT | 822604728 |
| Tufts Assoc Health Mainten Plan INC | Related tax-exempt org | HMO | MA | 042674079 |
| HPHC INC | Related tax-exempt org | Health insura | MA | 042452600 |
| Carepartners of CT Holdings LLC | Related partnership | Holding company | CT | 823129930 |
| Kaiser Permanente Ventures LLC | Related partnership | Healthcare | CA | — |
| HPHC Insurance Company INC | Related taxable corporation/trust | Health insurance | MA | 043149694 |
| Plan Marketing Insurance Agency INC | Related taxable corporation/trust | Brokerage | MA | 042734281 |
| HPHC Insurance Agency INC | Related taxable corporation/trust | Brokerage | MA | 043016201 |
| Health Plans INC | Related taxable corporation/trust | TPA | MA | 042734278 |
| Care Management Services INC | Related taxable corporation/trust | Care management | MA | 043438779 |
| New HPHC Holding Corporation | Related taxable corporation/trust | Holding company | DE | 815340662 |
| Point32health Services INC | Related taxable corporation/trust | Management SVCS | DE | 042985923 |
| Tufts Insurance Company | Related taxable corporation/trust | Insurance | MA | 043319729 |
| Tufts Benefit Administrators INC | Related taxable corporation/trust | TPA | MA | 043270923 |
| Total Health Plan INC | Related taxable corporation/trust | TPA | MA | 042918943 |
| TAHP Brokerage Corporation | Related taxable corporation/trust | Brokerage | MA | 043072692 |
| Integra Partners Holdings INC | Related taxable corporation/trust | MED equpt & SVCS | NY | 453032233 |