Accountable Care Organization
Northwestern Medicine ACO, LLC, is an Accountable Care Organization (ACO). This recognizes our ability to work together with CMS and participating physicians to provide high-quality service to our Medicare Fee-for-Service beneficiaries, ensuring they receive the right care at the right time in the right setting. As an organization, we work closely with physicians and other healthcare providers participating in the ACO to promote seamless, coordinated care.
Northwestern Medicine Physician Network ACO helps providers to track a Medicare Fee-for-Service beneficiary’s services across multiple care settings to ensure that each healthcare provider who has a role in a Medicare Fee-for-Service beneficiary’s care can have a complete picture—providing an improved care experience for each patient. This section describes important information for the public about Northwestern Medicine Physician Network ACO.
ACO Name and Location
Northwestern Medicine ACO, LLC
541 North Fairbanks Court, Suite 1500
Chicago, Illinois 60611
ACO Primary Contact
Jessica Walradt
312.926.5637
Jessica.Walradt@nm.org
Organizational Information
ACO participants:
ACO Participants | ACO Participant in Joint Venture (Enter Y or N) |
Aagaard 5, LLC | N |
Advanced Center for Internal Medicine | N |
Algimantas S Kerpe | N |
Allergy & Asthma Medical Associates | N |
Anjali Mehta | N |
Anne Marie Kudelka, MD, FACC, Center for Heart Health, LLC | N |
Armbrust 7 LLC | N |
Beata I Styka | N |
Bethany Cluskey | N |
Central DuPage Emergency Physicians PC | N |
Central DuPage Physician Group | N |
Constants Adams | N |
David K Zich | N |
Diane L Ozog, MDSC | N |
Emergency Medical Associates of Palos LTD | N |
Ewa V Hampston MD SC | N |
Grayslake Medical Group | N |
Instep Poidatry | N |
Internal Medicine Associates | N |
JeeYoon Park | N |
John Carroll | N |
Lakeshore Obstetrics and Gynecology | N |
Mass Medical SC | N |
Melinda Lukens | N |
NM Khan MD SC | N |
North Shore Medical Associates | N |
North Shore Primary Care | N |
North Suburban Family Physicians | N |
Northwestern Medical Faculty Foundation | N |
Northwestern Specialists in Plastic Surgery | N |
Northwestern Surgical Associates | N |
Patricia Katz | N |
Perry L Kamel MD SC | N |
Personalized Phsyciains Group LTd | N |
Premier General Medicine | N |
Radiology Subspecialists of Northern Illinois | N |
Ronald W Riegelhaupt | N |
Sean D O'Connor MD SC | N |
Shelly L Betman MD SC | N |
Suburban Neurology Group | N |
Surgery Group SC | N |
Timothy C Hain | N |
Valley Emergency Care Management | N |
Wheaton Eye | N |
ACO governing body:
Member | Member's Voting Power (Expressed as a percentage) | Membership Type | ACO Participant TIN Legal Business Name/DBA, if Applicable | ||
First Name | Last Name | Title/Position | |||
Douglas | Ambler |
MD/Chair | 12.5% | Physician Representative | Central DuPage Physician Group |
Steven | Armbrust |
MD/Voting Member | 12.5.% | Physician Representative | Armbrust 7, LLC |
Christine | Amstadt |
DO/Voting Member | 12.5.% | Physician Representative | Central DuPage Physician Group |
Brian | Walsh |
Voting Member | 12.5.% | System Representative | Central DuPage Hospital Association |
Jon | Aagaard |
MD/Voting Member | 12.5.% | Physician Representative | Aagaard 5, LLC |
Phillip | Roemer |
MD/Voting Member | 12.5.% | Physician Representative | Northwestern Medical Faculty Foundation |
Cheryl |
Wilkes | MD/Voting Member | 12.5.% | Physician Representative | Northwestern Medical Faculty Foundation |
David | Watt |
Voting Member | 12.5.% | Medicare Beneficiary Representative | N/A |
Key ACO clinical and administrative leadership:
ACO Executive | Brian Walsh |
Medical Director | Douglas Ambler |
Compliance Officer | Justine Dover |
Quality Assurance/Improvement Officer | Vanessa Flaherty |
Associated committees and committee leadership:
Committee Name | Committee Leader Name and Position |
Physician and Patient Engagement Committee | Dr. Douglas Ambler, Medical Director |
Quality Improvement Committee | Vanessa Flaherty |
Types of ACO participants, or combinations of participants, that formed the ACO:
- Hospital employing ACO professionals
- Networks of individual practices of ACO professionals
Shared Savings and Losses
Amount of Shared Savings/Losses
- Third Agreement Period
- Performance Year 2022, $0
- Second Agreement Period
- Performance Year 2021, $0
- Performance Year 2020, $0
- Performance Year 2019, $0
- Performance Year 2018, $0
- First Agreement Period
- Performance Year 2017, $0
- Performance Year 2016, $0
- Performance Year 2015, $0
Shared Savings Distribution
- Third Agreement Period
- Performance Year 2022
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
- Second Agreement Period
- Performance Year 2021
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
- Performance Year 2020
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
- Performance Year 2019
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
- Performance Year 2018
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
- First Agreement Period
- Performance Year 2017
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
- Performance Year 2016
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
- Performance Year 2015
- Proportion invested in infrastructure: N/A
- Proportion invested in redesigned care processes/resources: N/A
- Proportion of distribution to ACO participants: N/A
Quality Performance Results
2022 Quality Performance Results:
Quality performance results are based on CMS Web Interface.
Measure # | Measure Name | Collection Type | Rate | ACO Mean |
Quality ID#: 001 | Diabetes: Hemoglobin A1c (HbA1c) Poor Control | CMS Web Interface | 6.57 | 10.71 |
Quality ID#: 134 | Preventative Care and Screening: Screening for Depression and Follow-up Plan | CMS Web Interface | 87.90 | 76.97 |
Quality ID#: 236 | Controlling High Blood Pressure | CMS Web Interface | 73.44 | 76.16 |
Quality ID#: 318 | Falls: Screening for Future Fall Risk | CMS Web Interface | 98.10 | 87.83 |
Quality ID#: 110 | Preventative Care and Screening: Influenza Immunization | CMS Web Interface | 93.05 | 77.34 |
Quality ID#: 226 | Preventative Care and Screening: Tobacco Use: Screening and Cessation Intervention | CMS Web Interface | 92.31 | 79.27 |
Quality ID#: 113 | Colorectal Cancer Screening | CMS Web Interface | 83.98 | 75.32 |
Quality ID#: 112 | Breast Cancer Screening | CMS Web Interface | 80.48 | 78.07 |
Quality ID#: 438 | Statin Therapy for the Prevention and Treatment of Cardiovascular Disease | CMS Web Interface | 89.96 | 86.37 |
Quality ID#: 370 | Depression Remission at Twelve Months | CMS Web Interface | 1.96 | 16.03 |
Quality ID#: 321 | CAHPS for MIPS | CAHPS for MIPS Survey | N/A | N/A |
Measure#: 479 | Hospital-Wide, 30-Day, All-Cause Unplanned Readmission (HWR) Rate for MIPS Groups | Administrative Claims | 0.1576 | 0.1510 |
Measure#: 484 | Clinician and Clinician Group Risk-standardized Hospital Admission Rates for Patients with Multiple Chronic Conditions | Administrative Claims | 39.74 | 30.97 |
For previous years’ Financial and Quality Performance Results, please visit: data.cms.gov