Locations Main Campus: Chesterfield, MO 63017   |   Locations
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St. Luke’s ACO, LLC


St. Luke's ACO, LLC is a Medicare Shared Savings Program Accountable Care Organization (ACO). An ACO is a group of doctors, hospitals, and/or other health care providers working together with Medicare to give patients better, more coordinated service and health care. The goal of the ACO is to support doctors in caring for patients by making sure they have the most up-to-date information about patients' health and care. For patients, this coordination could mean less paperwork to fill out at the doctor's office, avoiding unnecessary tests, and more awareness of treatment options for various health conditions.

To learn more about physicians participating in our ACO, including contact information and office hours, please search our Physician Directory for St. Luke's Medical Group Physicians.

For general questions or additional information about Accountable Care Organizations, please visit www.medicare.gov/acos.html or call 1-800 MEDICARE (1-800-633-4227). TTY users should call 1-877-486-2048.

ACO Name and Location
St. Luke's ACO, LLC
Previous Names: N/A
232 S. Woods Mill Road
Chesterfield, Missouri 63017

ACO Primary Contact
Primary Contact Name: Allison Rajaratnam
Primary Contact Phone Number: 314-523-2583
Primary Contact Email Address: Allison.Rajaratnam@stlukes-stl.com

Organizational Information
ACO Participants (PDF) PDF
ACO Governing Body (PDF) PDF

Key ACO Clinical and Administrative Leadership
Scott Johnson
ACO Executive

John Campbell
Medical Director

Charla Craig
Compliance Officer

Allison Rajaratnam
Quality Assurance/Improvement Officer

Associated Committees and Committee Leadership
Sara Lander, M.D., Chair
Quality and Clinical Informatics Committee

Mohammad Ahmed, M.D., Chair
Finance Committee

John W. Campbell, M.D., Chair
Compliance Committee

Allison Rajaratnam, Chair
ACO Steering Committee

Types of ACO participants, or combinations of participants, that formed the ACO
Shared Savings and Losses
Amount of Shared Savings/Losses
Shared Savings Distribution
Quality Performance Results
2018 Quality Performance Results (PDF) PDF

Payment Rule Waivers