| MA | Massachusetts Health Policy Commission | Atrius Health, Inc.; Acton Medical Associates | No NO_CMIR | 2025-09-25 | Agency page |
| MA | Massachusetts Health Policy Commission | Nautic Partners; KabaFusion | No NO_CMIR | 2025-08-26 | Agency page |
| MA | Massachusetts Health Policy Commission | Ascension Health Alliance; AMSURG | No NO_CMIR | 2025-08-19 | Agency page |
| MA | Massachusetts Health Policy Commission | UMass Memorial Health – Milford Regional Medical Center; Shields Health Care Group, Inc. | No NO_CMIR | 2025-08-01 | Agency page |
| MA | Massachusetts Health Policy Commission | Mass General Brigham; CVS | Yes CMIR_INITIATED | 2025-06-06 | Agency page |
| MA | Massachusetts Health Policy Commission | The Pediatric Physicians’ Organization at Children’s, LLC; Children's Health Care | No NO_CMIR | 2025-05-20 | Agency page |
| MA | Massachusetts Health Policy Commission | Valley Health Systems, Inc.; ServiceNet | No NO_CMIR | 2025-05-05 | Agency page |
| MA | Massachusetts Health Policy Commission | BioReference Health, LLC; Laboratory Corporation of America Holdings, Inc. | No NO_CMIR | 2025-03-19 | Agency page |
| MA | Massachusetts Health Policy Commission | UMass Memorial Medical Center, Inc.; Marlborough Hospital | No NO_CMIR | 2025-02-13 | Agency page |
| MA | Massachusetts Health Policy Commission | Baystate Medical Practices, Inc.; Springfield Anesthesia Service, Inc. | No NO_CMIR | 2024-11-13 | Agency page |
| MA | Massachusetts Health Policy Commission | Mass General Brigham; Commonwealth Pathology Partners, P.C. | No NO_CMIR | 2024-10-31 | Agency page |
| MA | Massachusetts Health Policy Commission | Southcoast Health System; Gordon Operating Company, LLC (Alden Court) | No NO_CMIR | 2024-09-30 | Agency page |
| MA | Massachusetts Health Policy Commission | Owens & Minor, Inc.; Rotech Healthcare Holdings Inc. | No NO_CMIR | 2024-09-17 | Agency page |
| MA | Massachusetts Health Policy Commission | Steward Health Care System, LLC; BMC Health Systems | No NO_CMIR | 2024-09-16 | Agency page |
| MA | Massachusetts Health Policy Commission | Vibra Hospital of Western Massachusetts, LLC; Everest Hospital, LLC | No NO_CMIR | 2024-09-13 | Agency page |
| MA | Massachusetts Health Policy Commission | Steward Health Care System, LLC (Holy Family Hospital); LG Newcorp, Inc. | No NO_CMIR | 2024-09-11 | Agency page |
| MA | Massachusetts Health Policy Commission | Steward Health Care System, LLC (St. Elizabeth’s Medical Center of Boston; BMC Health Systems | No NO_CMIR | 2024-09-10 | Agency page |
| MA | Massachusetts Health Policy Commission | Steward Health Care System, LLC (Steward Good Samaritan Medical Center, Inc); BMC Health Systems | No NO_CMIR | 2024-09-10 | Agency page |
| MA | Massachusetts Health Policy Commission | Lifespan of Massachusetts, Inc.; Steward Health Care System, LLC | No NO_CMIR | 2024-09-06 | Agency page |
| MA | Massachusetts Health Policy Commission | Healthcare South, PC; Mass General Brigham, Inc. | No NO_CMIR | 2024-08-28 | Agency page |
| MA | Massachusetts Health Policy Commission | Northeast Orthopaedic Alliance; Northeast Orthopaedic Alliance MSO; Boston Sport and Shoulder; New England Orthopedic Surgeons; EONE Medical; EONE Medical Subsidiary | No NO_CMIR | 2024-08-16 | Agency page |
| MA | Massachusetts Health Policy Commission | Stewardship Health, Inc.; Brady Health Buyer, LLC | No NO_CMIR | 2024-08-15 | Agency page |
| MA | Massachusetts Health Policy Commission | Optum Health Networks | No NO_CMIR | 2024-08-12 | Agency page |
| MA | Massachusetts Health Policy Commission | BioReference Health, LLC; Laboratory Corporation of America Holdings, Inc. | No NO_CMIR | 2024-07-11 | Agency page |
| MA | Massachusetts Health Policy Commission | Southcoast Health System, Inc.; Same Day Surgicare of New England, Inc. | No NO_CMIR | 2024-04-30 | Agency page |
| MA | Massachusetts Health Policy Commission | LGH Medical Group LLC; New England Neurological Associates PC | No NO_CMIR | 2024-04-01 | Agency page |
| MA | Massachusetts Health Policy Commission | Collaborative Care Holdings, LLC; Steward Operations Holdings, LLC Note: *Withdrawn | No NO_CMIR | 2024-03-26 | Agency page |
| MA | Massachusetts Health Policy Commission | BMC Health System, Inc.; Tellica Imaging, LLC | No NO_CMIR | 2024-03-07 | Agency page |
| MA | Massachusetts Health Policy Commission | Affiliated Pediatrics Practices, LLC; Pediatric Associates of Greater Salem, Inc. | No NO_CMIR | 2024-03-04 | Agency page |
| MA | Massachusetts Health Policy Commission | UMass Memorial Health Care, Inc.; Milford Regional Medical Center, Inc. | No NO_CMIR | 2024-02-14 | Agency page |
| MA | Massachusetts Health Policy Commission | UMass Memorial Health – Harrington Hospital; Shields Health Care Group | No NO_CMIR | 2023-12-26 | Agency page |
| MA | Massachusetts Health Policy Commission | Atrius MSO, LLC; Shields Imaging Services, LLC | No NO_CMIR | 2023-11-22 | Agency page |
| MA | Massachusetts Health Policy Commission | Mercy Medical Center; Greater Springfield Surgery Center, LLC Note: *Withdrawn (Greater Springfield Surgery Center, LLC) | No NO_CMIR | 2023-11-16 | Agency page |
| MA | Massachusetts Health Policy Commission | Tufts Medical Center Physicians Organization; Sturdy Health | No NO_CMIR | 2023-11-03 | Agency page |
| MA | Massachusetts Health Policy Commission | Dana-Farber Cancer Institute; Beth Israel Deaconess Medical Center; Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center, Inc. | Yes CMIR_INITIATED | 2023-10-24 | Agency page |
| MA | Massachusetts Health Policy Commission | Beth Israel Lahey Health Performance Network | No NO_CMIR | 2023-10-17 | Agency page |
| MA | Massachusetts Health Policy Commission | BIDCO Physician LLC d/b/a Physician Performance LLC; Mount Auburn Cambridge IPA | No NO_CMIR | 2023-10-17 | Agency page |
| MA | Massachusetts Health Policy Commission | Baystate Medical Center; Laboratory Corporation of America Holdings | No NO_CMIR | 2023-10-16 | Agency page |
| MA | Massachusetts Health Policy Commission | UnitedHealth Group; Amedisys | No NO_CMIR | 2023-09-21 | Agency page |
| MA | Massachusetts Health Policy Commission | Tufts Medicine; Laboratory Corporation of America Holdings | No NO_CMIR | 2023-09-20 | Agency page |
| MA | Massachusetts Health Policy Commission | Tufts Medicine; Laboratory Corporation of America Holdings | No NO_CMIR | 2023-08-04 | Agency page |
| MA | Massachusetts Health Policy Commission | Greater Boston Urology; US Urology Partners | No NO_CMIR | 2023-08-01 | Agency page |
| MA | Massachusetts Health Policy Commission | Beth Israel Deaconess Medical Center; Cambridge Health Alliance; Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center, Inc.; Mount Auburn Hospital | No NO_CMIR | 2023-04-26 | Agency page |
| MA | Massachusetts Health Policy Commission | Mass General Brigham, Inc.; Emergency Medicine Specialists, P.C. | No NO_CMIR | 2023-04-24 | Agency page |
| MA | Massachusetts Health Policy Commission | Saint Vincent Hospital; MetroWest Medical Center; Emergency Physician Associates of Massachusetts | No NO_CMIR | 2023-04-10 | Agency page |
| MA | Massachusetts Health Policy Commission | Tufts Medical Center; Commonwealth Radiology Associates | No NO_CMIR | 2022-11-04 | Agency page |
| MA | Massachusetts Health Policy Commission | UnitedHealth Group, Inc.; LHC Group, Inc. | No NO_CMIR | 2022-10-28 | Agency page |
| MA | Massachusetts Health Policy Commission | Beth Israel Lahey Health, Inc.; Exeter Health Resources, Inc. | No NO_CMIR | 2022-07-28 | Agency page |
| MA | Massachusetts Health Policy Commission | Monte Nido Holdings, LLC | No NO_CMIR | 2022-07-27 | Agency page |
| MA | Massachusetts Health Policy Commission | Steward Health Care System; CareMax, Inc. | No NO_CMIR | 2022-07-15 | Agency page |