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Bluestone Accountable Care Organization (ACO)

Bluestone Physician Services is participating in Bluestone ACO, an Accountable Care Organization. An ACO is a group of health care providers that work together to improve the quality and experience of care you receive. ACOs receive a portion of any savings that result from reducing costs and meeting quality requirements. Beneficiaries that are included in this population are those that have fee-for-service Medicare or Original Medicare.

What you need to know

  • Medicare evaluates how well each ACO meets these goals every year. Those ACOs that do a good job can earn a financial bonus. ACOs that earn a bonus may use the payment to invest more in your care or share a portion directly with your providers. ACOs may owe a penalty if their care increases costs.
  • Our participation in the Bluestone ACO doesn’t limit your choice of health care providers. Your Medicare benefits are not changing. You still have the right to visit any doctor, hospital or other provider that accepts Medicare at any time, just like you do now.
  • To help us coordinate your health care better, Medicare shares information about your care with your providers. If you wish to decline this sharing of information call 1-800-MEDICARE (1-800-633-4227).
  • Questions? Contact Bluestone at 877-599-1039 or


For more information on the CMS ACO Models, the following resources are available:


(800) MEDICARE (800-633-4227)
24 hours a day/7 days a week.
TTY users should call (877) 486-2048

Bluestone ACO 

Toll Free: 877-599-1039

2021 Beneficiary Handouts
Medicare Beneficiary Handout English Spanish
Practice Notice English Spanish
Voluntary Alignment Notice English Spanish

ACO Name and Location
Bluestone ACO
9822 Tapestry Park Circle
Suite 208
Jacksonville, Florida 33246

ACO Primary Contact
Timothy Koehler

Organizational Information

ACO Participants:

ACO Participants ACO Participant in Joint Venture
Bluestone Physician Services Southeast LLC N
Bluestone Physician Services PA N
Bluestone Physician Services Wisconsin SC N


ACO Governing Body:


Last Name


First Name



Member’s Voting Power (Expressed as a percentage or number) Membership Type ACO Participant Legal Business Name and D/B/A, if applicable
Koehler Tim Chairman /  Chief Executive Officer/Voting Member 23.75% Participant Representative
Keenan Sarah Co-Chairman/COO/Voting Member 23.75% Participant Representative
Stivland Todd CMO / Voting Member 23.75% Participant Representative Bluestone Physician Services PA
Nelsen David CFO 23.75% Other
Hunkins Nate Director of Population Health 0% Other




Compliance Officer 0% Other
Weinke Katie Program Manager 0% Other
Bergen Brad Beneficiary POA 2.5% Beneficiary Representative
Reuland Stacey Beneficiary POA 2.5% Beneficiary Representative


Key ACO Clinical and Administrative Leadership

Tim Koehler ACO Chief Executive Officer 
Todd Stivland Chief Medical Officer 
Sarah Keenan Chief Operating Officer
David Nelsen Chief Financial Officer 
Joanne Ryan

Candice Levy

Compliance Officer
Nate Hunkins Director of Population Health
Katie Weinke Program Manager

Associated Committees and Committee Leadership

Committees Committee Chairs
Quality Assurance and Process Improvement Nate Hunkins
Medical Cost and Provider Network David Nelsen
Utilization and Care Management Nate Hunkins
Finance and Compensation David Nelsen
Patient Experience Sarah Keenan

Associated Committees and Committee Leadership:

Committee Name Committee Leader Name and Position
Bi-Weekly Value Based Care Committee

·       Patient Experience

·       Quality Assurance & Process Improvement

·       Medical Costs and Provider Network

·       Utilization and Care Management

Nate Hunkins, Director of Population Health 

Katie Weinke, Program Manager 

Executive & Finance Committee

·       Finance and Compensation

·       Medical Costs and Provider Network

Tim Koehler, CEO

Katie Weinke, Program Manager 

Bluestone ACO & Cura Management Committee  Tim Koehler, CEO

Katie Weinke, Program Manager 

Types of ACO Participants, or Combinations of Participants, that Formed the ACO:

  • Bluestone Physician Services (MN/WI/FL/VA)

Shared Savings and Losses

Amount of Shared Savings/Losses:


Shared Savings Distribution:


Quality Performance Results

2019 Quality Performance Results:

Our ACO did not participate in the Shared Savings Program in the 2019 performance year, therefore this section is not applicable at this time.

For Previous Years’ Financial and Quality Performance Results, Please Visit

Waiver for Payment for Telehealth Services:

  • Our ACO clinicians provide telehealth services using the flexibilities under 42 CFR § 425.612(f) and 42 CFR § 425.613.


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