Transaction List - Material Change Notices

List of MCN Transactions
MCN PartiesTransaction Type1Date HPC Received2CMIR? 
Southcoast Health System, Inc.; Same Day Surgicare of New England, Inc.Acquisition of/by hospitalApril 30, 2024  
LGH Medical Group LLC
New England Neurological Associates PC
Provider merger/affiliation increasing NPSR $10MApril 1, 2024No 
Collaborative Care Holdings, LLC
Steward Operations Holdings LLC
Provider merger/affiliation increasing NPSR $10MMarch 26, 2024  
BMC Health System, Inc.
Tellica Imaging, LLC
Provider partnership for joint contractingMarch 7, 2024  
Affiliated Pediatrics Practices, LLC
Pediatric Associates of Greater Salem, Inc.
Provider merger/affiliation increasing NPSR $10MMarch 4, 2024No 
UMass Memorial Health Care, Inc.
Milford Regional Medical Center, Inc.
Acquisition of/by a hospitalFebruary 14, 2024  
UMass Memorial Health – Harrington Hospital
Shields Health Care Group
Provider partnership for joint contractingDecember 26, 2023No 
Atrius MSO, LLC
Shields Imaging Services, LLC
Provider partnership for joint contractingNovember 22, 2023No 
Greater Springfield Surgery Center, LLC  *Withdrawn
Mercy Medical Center
Provider partnership for joint contractingNovember 16, 2023No 
Tufts Medical Center Physicians Organization
Sturdy Health
Clinical AffiliationNovember 3, 2023No 
Dana-Farber Cancer Institute
Beth Israel Deaconess Medical Center
Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center, Inc.
Clinical AffiliationOctober 24, 2023  
Beth Israel Lahey Health Performance NetworkProvider merger/affiliation increasing NPSR $10milOctober 17, 2023No 
BIDCO Physician LLC d/b/a Physician Performance LLC
Mount Auburn Cambridge IPA
Provider merger/affiliation increasing NPSR $10milOctober 17, 2023No 
Baystate Medical Center
Laboratory Corporation of America Holdings
Provider merger/affiliation increasing NPSR $10milOctober 16, 2023No 
UnitedHealth Group
Amedisys
Provider merger/affiliation increasing NPSR $10milSeptember 21, 2023No 
Tufts Medicine
Laboratory Corporation of America Holdings
Clinical AffiliationSeptember 20, 2023No 
Tufts Medicine
Laboratory Corporation of America Holdings
Provider merger/affiliation increasing NPSR $10milAugust 4, 2023No 
Greater Boston Urology
US Urology Partners
Provider merger/affiliation increasing NPSR $10MAugust 1, 2023No 
Beth Israel Deaconess Medical Center
Cambridge Health Alliance
Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center, Inc.
Mount Auburn Hospital
Clinical AffiliationApril 26, 2023No 
Mass General Brigham, Inc.
Emergency Medicine Specialists, P.C.
Provider merger/affiliation increasing NPSR $10milApril 24, 2023No 
Saint Vincent Hospital
MetroWest Medical Center
Emergency Physician Associates of Massachusetts
Clinical AffiliationApril 10, 2023No 
Tufts Medical Center
Commonwealth Radiology Associates
Clinical affiliationNovember 4, 2022No 
UnitedHealth Group, Inc.
LHC Group, Inc.
Provider merger/affiliation increasing NPSR $10MOctober 28, 2022No 
Beth Israel Lahey Health, Inc. 
Exeter Health Resources, Inc.
Acquisition of/by a HospitalJuly 28, 2022No 
Monte Nido Holdings, LLCAcquisition of/by a hospitalJuly 27, 2022No 
Steward Health Care System
CareMax, Inc.
Provider merger/affiliation increasing NPSR $10MJuly 15, 2022No 
Tufts Medicine
Acadia Healthcare Company
Provider partnership for joint contractingJuly 7, 2022No 
Children's Medical Center Corporation
Tufts Medicine
Clinical AffiliationJuly 6, 2022No 
MelroseWakefield Healthcare, Inc.
Shields HealthCare Group, Inc.
Provider partnership for joint contractingJune 2, 2022No 
Boston Children's Hospital
Franciscan Hospital For Children
Acquisition of/by a HospitalMarch 21, 2022No 
Emerson Hospital
Atrius Health
Clinical AffiliationMarch 10, 2022No 
Beth Israel Lahey Health
Cape Cod Healthcare
Clinical AffiliationFebruary 11, 2022No 
Lawrence General Hospital
Steward Health Care System
Clinical AffiliationFebruary 3, 2022No 
South Shore Health Integrated Delivery Network
Compass Medical, P.C.
Provider merger/affiliation increasing NPSR $10MJanuary 19, 2022No 
NEBSC Hospital Holdings, LLC
NEBSC Surgeon Holdings, LLC 
Provider partnership for joint contractingJanuary 18, 2022No 
South Shore Health System, Inc.
Sturdy Memorial Hospital, Inc.
Southeast Massachusetts Behavioral Health, LLC
Signature Healthcare Corporation
Provider partnership for joint contractingJanuary 6, 2022No 
Spire Orthopedic Partners (SMN), LLC
Sports Medicine North Orthopedic Surgery, Inc.
Provider merger/affiliation increasing NPSR $10MJanuary 10, 2022No 
BILH Surgery Center Plymouth Hospital Holdco, LLC
Pilgrim ASC LLC
Provider partnership for joint contractingDecember 21, 2021No 
South Shore Hospital, Inc.
Atrius Health, Inc.
Clinical affiliationNovember 22, 2021No 
Baystate Medical Center, Inc.
NEOS SurgCo, LLC
Provider partnership for joint contractingOctober 26, 2021No 
Curahealth Stoughton, LLC
PAM Cubed, LLC
Acquisition of/by a hospitalJuly 28, 2021No 
Walden Behavioral Care
Monte Nido
Acquisition of/by a hospitalJuly 9, 2021No 
Beth Israel Lahey Health, Inc.
Joslin Diabetes Center, Inc. and the Joslin Clinic, Inc.
Provider merger/affiliation increasing NPSR $10MJuly 2, 2021 No 
Aspire
South Shore Health System
Clinical AffiliationMay 19, 2021No 
Boston Children's Hospital
Cape Cod Hospital
Clinical affiliationMay 3, 2021No 
WellforceFormation of a contracting entityApril 16, 2021No 
Atrius Health Inc.
Collaborative Care Holdings LLC
Provider merger/affiliation increasing NPSR $10MMarch 18, 2021No 
Ophthalmic Consultants of Boston
Eye Health Services
Provider merger/affiliation increasing NPSR $10MMarch 6, 2021No 
National Mentor Healthcare
Community Intervention Services
Provider merger/affiliation increasing NPSR $10MMarch 5, 2021No 
Mercy Medical Center
MiraVista Behavioral Health
Acquisition of/by hospitalFebruary 17, 2021No 
Heywood Healthcare
Shields Health Care Group
Provider partnership for joint contractingJanuary 22, 2021No 
UMass Memorial Health Care
Harrington Health Care System
Acquisition of/by hospitalDecember 8, 2020No 
HopeHealth
Community VNA
Provider merger/affiliation increasing NPSR $10MOctober 27, 2020No 
Baystate Health
Valley Medical Group
Clinical affiliationOctober 16, 2020No 
Lawrence General HospitalFormation of a contracting entityOctober 16, 2020No 
Baystate Medical Center
Kindred Healthcare
Provider partnership for joint contractingOctober 16, 2020No 
Lowell General Hospital
Chelmsford ASC Holding Company, LLC
Provider partnership for joint contractingSeptember 21, 2020No 
South Shore Health SystemFormation of a contracting entityJune 2, 2020No 
Emerson Hospital
Physicians Endoscopy, LLC
Provider partnership for joint contractingJune 1, 2020No 
South Shore Hospital
South Shore Anesthesia Associates
Provider merger/affiliation increasing NPSR $10MMay 28, 2020No 
Shields Health Care Group (MRI)
Emerson Hospital (MRI)
Provider partnership for joint contractingApril 24, 2020No 
Shields Health Care Group (PET-CT)
Emerson Hospital (PET-CT)
Provider partnership for joint contractingApril 24, 2020No 
East Boston Neighborhood Health Center
South End Community Health Center
Provider merger/affiliation increasing NPSR $10MOctober 24, 2019No 
Baystate Medical Center
Greater Springfield Surgery Center
Provider partnership for joint contractingOctober 16, 2019No 
Exeter Health Resources
Partners HealthCare System
Acquisition of/by hospitalAugust 26, 2019No 
Boston Children's Hospital
Partners HealthCare System
Clinical AffiliationJuly 11, 2019No 
Baystate Medical Center
AmSurg Holdings
Provider partnership for joint contractingJune 27, 2019No 
Associated Physicians of Harvard Medical Faculty Physicians
Beth Israel Deaconess Care Organization
Provider merger/affiliation increasing NPSR $10MJune 25, 2019No 
South Shore Physician-Hospital Organization, Inc. 
Sturdy Memorial Associates
Provider merger/affiliation increasing NPSR $10MJune 13, 2019No 
The Pediatric Physicians’ Organization at Children’s, LLC 
Woburn and North Andover Pediatric Associates
Pediatric Associates of Brockton
Provider merger/affiliation increasing NPSR $10MMay 7, 2019No 
Emerson Hospital  *Withdrawn
Harrington HealthCare System
Heywood Healthcare 
Holyoke Medical Center
Signature Healthcare
South Shore Health System
Sturdy Memorial Hospital
Provider partnership for joint contractingApril 22, 2019No 
HealthDrive Corporation 
New England Geriatrics (no MCN form)
Provider merger/affiliation increasing NPSR $10MFebruary 12, 2019No 
Baystate Medical Center, Inc. 
Beach Health Development, LLC
Provider partnership for joint contractingFebruary 8, 2019No 
Partners HealthCare System 
Care New England Health System
Acquisition of/by hospitalDecember 20, 2018No 
Dana-Farber Cancer Institute MCN
Cape Cod Healthcare MCN
Clinical AffiliationNovember 1, 2018No 
Shields Health Care Group*
Reliant MSO*
ASC HoldCo
*Updated on October 17, 2018
Provider partnership for joint contractingSeptember 7, 2018No 
Wellforce, Inc.
Home Health Foundation, Inc.
Provider merger/affiliation increasing NPSR $10MAugust 1, 2018No 
South Shore Health System, Inc. 
Health Express, LLC
Provider merger/affiliation increasing NPSR $10MJuly 23, 2018No 
Partners HealthCare System
Cooley Dickinson Physician Hospital Organization
Provider merger/affiliation increasing NPSR $10MJune 15, 2018No 
Shields Health Care 
Tufts Medical Center
Clinical AffiliationJanuary 8, 2018No 
Shields Health Care
Hallmark Health System
Tufts Medical Center Physicians Organization
Formation of a contracting entityJanuary 5, 2018No 
AdCare Hospital of Worcester, Inc.Acquisition of/by hospitalOctober 25, 2017No 
UMass Memorial Health Care  
Harrington Memorial Hospital  
Clinical AffiliationOctober 19, 2017No 
Shields Health Care Group  
Baystate Health  
Formation of a Contracting EntityOctober 16, 2017No 
Steward Health Care System  
IASIS Healthcare Corporation
Acquisition by/of hospitalSeptember 18, 2017No 
Steward Health Care System  *Withdrawn
Community Health Systems
Acquisition by/of hospitalSeptember 18, 2017No 
Community Health Care, Inc.  Provider merger/affiliation increasing NPSR $10MAugust 9, 2017No 
CareGroup  
Lahey Health System  
Seacoast Regional Health Systems  
Beth Israel Deaconess Care Organization  
Mount Auburn Cambridge Independent Practice Association  
Acquisition of/by hospitalJuly 13, 2017Yes 
Collaborative Care Holdings LLC  
Reliant Medical Group, Inc.  
Provider merger/affiliation increasing NPSR $10MJune 30, 2017No 
Quest Diagnostics Massachusetts  
Cape Cod Healthcare  
Provider merger/affiliation increasing NPSR $10MJune 28, 2017No 
Atrius Health, Inc.  
Lowell General Hospital  
Clinical AffiliationMay 11, 2017No 
UMass Memorial Health Ventures (UMMHV)  
Team Behavioral Health  
Formation of a contracting entityApril 5, 2017No 
Partners HealthCare System  
Foundation of the Massachusetts Eye and Ear Infirmary
Acquisition of/by hospitalApril 3, 2017Yes  
Atrius Health, Inc.  Provider merger/affiliation increasing NPSR $10MFebruary 1, 2017No 
Berkshire Health Systems  Formation of a Contracting OrganizationJanuary 17, 2017No 
Dana-Farber Cancer Institute  
UMass Memorial Health Care, Inc.  
Clinical AffiliationJanuary 9, 2017No 
Alita Care  
Bournewood Hospital  
Acquisition of/by hospitalJanuary 4, 2017No 
New England Life Flight  
Lahey Clinic Hospital  
Clinical AffiliationDecember 6, 2016No 
Shields Health Care  
Berkshire Medical Center  
Formation of a contracting entityNovember 30, 2016No 
ATI Physical Therapy  
UMass Memorial Health Ventures (UMMHV)  
Formation of a contracting entityNovember 9, 2016No 
Steward Health Care Network  
Central Massachusetts Independent Physician Association  
Provider merger/affiliation increasing NPSR $10MNovember 4, 2016No 
Clinton Hospital  
HealthAlliance Hospitals  
Acquisition of/by hospitalOctober 7, 2016No 
Southcoast Health Network LLC  Formation of a contracting entitySeptember 30, 2016No 
Partners HealthCare System  
Wentworth-Douglass Health System  
Acquisition of/by hospitalSeptember 9, 2016No 
Care New England Health System   *Withdrawn
Southcoast Hospitals Group, Inc.   
Acquisition of/by hospitalAugust 26, 2016No 
The Pediatric Physicians' Organization at Children's, LLC  Provider merger/affiliation increasing NPSR $10MAugust 19, 2016No 
Hallmark Health PHO, Inc.  
New England Quality Care Alliance, Inc.  
Provider merger/affiliation increasing NPSR $10MAugust 12, 2016No 
Hallmark Health Corporation 
Wellforce, Inc.  
Acquisition of/by hospitalAugust 12, 2016No 
Boston Children's Hospital  
South Shore Medical Center  
Clinical AffiliationAugust 4, 2016No 
Atrius Health, Inc.  
Winchester Hospital  
Clinical AffiliationMay 10, 2016No 
Kindred Healthcare  
Curahealth  
Acquisition of/by hospitalMay 6, 2016No 
Boston Children's Hospital  
Southcoast Hospitals Group  
Clinical AffiliationApril 12, 2016No 
Belmont Medical Associates   
Mount Auburn Professional Services, Inc  
Provider merger/affiliation increasing NPSR $10MMarch 31, 2016No 
MWA, P.C. d/b/a RiverBend Medical Group  
Sisters of Providence Health System, Inc.  
Provider merger/affiliation increasing NPSR $10MMarch 1, 2016No 
Baystate Mary Lane Hospital  
Baystate Wing Hospital  
Acquisition of/by hospitalFebruary 5, 2016No 
Mount Auburn Hospital  
Mount Auburn Cambridge Independent Practice Association, Inc.
Boston Children's Hospital
Clinical AffiliationJanuary 26, 2016No 
Beth Israel Deaconess Medical Center  
Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center   
MetroWest Medical Center  
Clinical AffiliationJanuary 14, 2016Yes  
Partners HealthCare System  
Shields Health Care Group  
Formation of a contracting entityNovember 30, 2015No 
Atrius Health, Inc.   
Massachusetts Eye and Ear Infirmary  
Clinical AffiliationNovember 17, 2015No 
MetroWest Medical Center  
Beth Israel Deaconess Care Organization   
Provider merger/affiliation increasing NPSR $10MOctober 30, 2015Yes  
UMass Memorial Accountable Care Organization   *WithdrawnClinical AffiliationOctober 19, 2015No 
Anna Jaques Hospital  
Shields Health Care Group  
Formation of a contracting entityOctober 13, 2015No 
Beth Israel Deaconess Care Organization  
New England Baptist Clinical Integration Organization  
New England Baptist Hospital  
Provider merger/affiliation increasing NPSR $10MOctober 2, 2015Yes 
Dana-Farber Cancer Institute  
Partners HealthCare System  
Berkshire Medical Center  
Amended Dana-Farber Cancer Institute Notice of Material Change 
Amended Berkshire Medical Center Notice of Material Change  
*Partners HealthCare System has withdrawn from this transaction.
Clinical AffiliationSeptember 24, 2015No 
Cape Cod Hospital   
Tufts Medical Center Parent   
Clinical AffiliationAugust 12, 2015No 
Trinity Health Corporation  
Saint Francis Care
Acquisition of/by hospitalJuly 31, 2015No 
Boston Medical Center  Clinical AffiliationJuly 2, 2015No 
Boston Children’s Hospital  
Lahey Clinical Performance Network   
Clinical AffiliationJuly 2, 2015No 
HealthSouth Acquisition Holdings, LLC  
Reliant Rehabilitation Hospital Braintree   
HealthSouth Acquisition Holdings, LLC  
Reliant Rehabilitation Hospital New England  
Acquisition of/by hospitalJune 26, 2015No 
Sturdy Memorial Hospital, Inc.  
Shields Health Care Group  
Formation of a contracting entityJune 1, 2015No 
Brockton Hospital, Inc.  
Shields Health Care Group  
Formation of a contracting entityJune 1, 2015No 
South Shore Medical Center  
South Shore Physician Ambulatory Enterprise  
Provider merger/affiliation increasing NPSR $10MMay 7, 2015No 
UMass Memorial Health Care  
Quest Diagnostics Massachusetts   
Provider merger/affiliation increasing NPSR $10MMay 1, 2015No 
Partners HealthCare System, Inc.  
Steward Health Care   
Clinical AffiliationApril 10, 2015No 
Noble Hospital  
Baystate Medical Center  
Acquisition of/by hospitalMarch 18, 2015No 
UMass Memorial Health Care, Inc.  
Shields Health Care Group   
Formation of a contracting entityMarch 18, 2015No 
Steward Health Care  
Dana Farber Cancer Institute  
Clinical AffiliationMarch 10, 2015No 
Partners HealthCare System, Inc.  
Pentucket Medical Associates 
Provider merger/affiliation increasing NPSR $10MNovember 21, 2014No 
Winchester Hospital  Formation of a contracting entityOctober 30, 2014No 
UMass Memorial Health Care, Inc.  Formation of a contracting entityOctober 30, 2014No 
Reliant Medical Group  
Southboro Medical Group  
Provider merger/affiliation increasing NPSR $10MOctober 23, 2014No 
Valley Medical Group  
Health New England
Merger or Affiliation with a CarrierSeptember 30, 2014No 
PMG Physician Associates  
Beth Israel Deaconess Care Organization  
Provider merger/affiliation increasing NPSR $10MJuly 28, 2014No 
Lahey Health   
VNA of Middlesex-East
Provider merger/affiliation increasing NPSR $10MJuly 24, 2014No 
Lowell General Hospital   
Tufts Medical Center  
Acquisition of/by hospitalJuly 22, 2014No 
Boston Medical Center  Formation of a contracting entityMay 13, 2014No 
Beth Israel Deaconess Care Organization  
Lawrence General Hospital  
Provider merger/affiliation increasing NPSR $10MMay 7, 2014No 
New England Rehabilitation Management Co. (NERM)    
UMass Memorial Health Ventures (UMMHV)  
Change in ownership levelsApril 23, 2014No 
Holy Family Hospital  
Merrimack Valley Hospital  
Acquisition of/by hospitalMarch 25, 2014No 
New England Baptist Hospital   
Beth Israel Deaconess Medical Center  
Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP)   
Clinical AffiliationMarch 18, 2014No 
Dana-Farber Cancer Institute  
Steward Health Care System LLC   
Clinical AffiliationMarch 18, 2014No 
Baystate Health   
Wing Memorial  
Acquisition of/by hospitalMarch 12, 2014No 
Dana-Farber Cancer Institute  
Commonwealth Hematology-Oncology, P.C.   
Provider merger/affiliation increasing NPSR $10MMarch 3, 2014No 
Beth Israel Deaconess Care Organization  
Lower Merrimac Valley Hospital Organization, Inc  
Whittier Independent Practice Association, Inc  
Seacoast Regional Health System  
Provider merger/affiliation increasing NPSR $10MFebruary 28, 2014No 
MACC - Emerald  
Emerald Physician Services Inc.
Provider merger/affiliation increasing NPSR $10MNovember 18, 2013No 
Partners Healthcare System, Inc - Hallmark Health Corporation  
Hallmark Health Corporation-Partners Healthcare System, Inc.  
Acquisition of/by hospitalNovember 12, 2013Yes 
Lahey Health Systems, Inc - Winchester Hospital  
Winchester Hospital - Lahey Health System, Inc.  
Acquisition of/by hospitalOctober 30, 2013Yes 
Harbor Medical Associates - Partners Healthcare System, Inc.  
Partners Healthcare System, Inc - Harbor Medical Associates  
Provider merger/affiliation increasing NPSR $10MOctober 24, 2013Yes 
Reliant
Braintree Rehabilitation Hospital  
Reliant
New England Rehabilitation Hospital
Acquisition of/by hospitalSeptember 23, 2013No 
Harvard Medical Faculty Physicians - Jordan Health Systems  
Jordan Hospital-HMFP MCN  
Clinical Affiliation3August 9, 2013No 
Jordan Hospital-BIDCO MCN  
BIDCO-Jordan MCN  
Provider merger/affiliation increasing NPSR $10M3August 8, 2013No 
Atrius-Jordan Hospital, Inc.  
Jordan - Atrius Affiliation  
Clinical Affiliation3August 8, 2013No 
Tenet-Vanguard MetroWest Hospital  
Tenet-Vanguard St. Vincent Hospital  
Acquisition of/by hospitalAugust 7, 2013No 
CHA-BIDCO  
CHAPO-BIDCO  
BIDCO-CHA  
Provider merger/affiliation increasing NPSR $10MAugust 1, 2013No 
Beth Israel Deaconess Medical Center  
Jordan Hospital, Inc.  
Acquisition of/by hospital3July 29, 2013No 
New England Quality Care Alliance, Inc. 
Healthcare South, P.C.
Provider merger/affiliation increasing NPSR $10MJuly 22, 2013No 
Atrius Health, Inc.  
Visiting Nurse Association of Boston, Inc.  
Provider merger/affiliation increasing NPSR $10MJuly 3, 2013No 
Children’s Hospital Corporation  Formation of a contracting entityJune 12, 2013No 
BIDMC  
Signature Healthcare Corporation  
HMFP   
Clinical AffiliationJune 4, 2013No 
Steward Health Care System, LLC  
Hawthorn Medical Associates   
Acquisition of/by hospitalMay 24, 2013No 
Partners Healthcare System, Inc.  
Cooley Dickinson Hospital, Inc.  
Acquisition of/by hospitalMay 6, 2013No 
Beth Israel Deaconess  
Cambridge Public Health Commission  
Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center   
Clinical AffiliationMay 6, 2013No 
Partners HealthCare System, Inc. Notice of Material Change  
South Shore Hospital Notice of Material Change   
Acquisition of/by
hospital
April 22, 2013Yes 

1. The listed transaction type represents the HPC’s classification of each transaction, which may in some cases differ from the transaction type indicated by filing parties on their notice forms.

2. Note that the date that a notice was first received does not generally reflect the date that the notice was completed. The exact timing of notice completion depends on the nature of the transaction and the parties’ timeliness in responding to requests for information necessary to complete the notice.

3. In counts of transactions, the HPC treats these four notices as a single transaction.

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