Accountable care organizations (ACOs) exist to improve care quality and reduce total cost of care—but the administrative machinery required to operate an ACO can itself become a significant cost. Managing vendor contracts, coordinating quality measure reporting to CMS, maintaining communications across dozens of participating providers, and sustaining compliance documentation for the Medicare Shared Savings Program (MSSP) or other value-based contracts all generate administrative demand that small ACO management teams struggle to absorb. In 2026, ACOs are increasingly turning to virtual assistants to handle this administrative volume efficiently.
Vendor Billing in the ACO Operating Model
ACOs contract with a range of operational vendors: care coordination technology platforms, population health analytics services, clinical integration consultants, and practice transformation support organizations. Managing the billing and contract administration for these relationships requires tracking service milestones, reconciling invoices against engagement letters, and processing payments through approval chains that may span multiple participating entities.
According to a 2024 report from the National Association of ACOs (NAACOS), administrative costs average 6–9% of an ACO's total shared savings program budget, with vendor management and contract administration representing a disproportionate share of that overhead relative to the staff hours involved. VAs manage vendor invoice queues, track contract milestone payments, and maintain organized vendor contract archives—reducing the administrative drag on ACO management staff.
Quality Measure Coordination: The Administrative Core of ACO Performance
ACO performance under MSSP and commercial value-based contracts is measured by quality scores across 20–50 clinical quality measures, depending on the contract year and track. Coordinating data collection, gap closure activities, and measure-specific reporting across a provider panel that may include hundreds of participating practices requires persistent administrative management.
VAs support quality measure coordinators by managing outreach queues to participating practices, tracking measure-specific data collection deadlines, and assembling reporting packages for submission to CMS or commercial payers. A 2024 analysis by the Leavitt Partners healthcare consultancy found that ACOs with dedicated administrative support for quality coordination submitted complete quality data on time at a rate 24% higher than ACOs where coordinators carried the full administrative burden alongside clinical oversight.
Provider and CMS Communications at Scale
ACO management involves simultaneous communication obligations: quarterly performance updates to participating providers, responding to CMS program inquiries, managing beneficiary assignment appeals, and distributing regulatory updates to the provider panel. The Centers for Medicare & Medicaid Services (CMS) increasingly communicates MSSP program changes through secure portal notifications that require documented receipt and response.
VAs manage the communication infrastructure: distributing provider performance reports, tracking response confirmations, logging CMS portal notifications, and maintaining the correspondence records required for program audit purposes. They draft routine outgoing communications—provider engagement updates, quality campaign announcements, and program milestone reminders—so that ACO leadership retains only the high-judgment communications for personal attention.
Compliance Documentation for Value-Based Programs
MSSP participation requires ACOs to maintain extensive compliance documentation: beneficiary notice procedures, advance payment track documentation, anti-assignment attestations, and annual program participation certifications. Failure to maintain current documentation can result in shared savings recoupment or program termination.
VAs own the compliance documentation calendar: tracking certification renewal dates, preparing documentation packages for annual MSSP certification submissions, and maintaining audit-ready records that demonstrate program participation compliance. The NAACOS 2025 compliance survey found that ACOs with administrative staff dedicated to compliance documentation maintenance experienced significantly fewer CMS corrective action requests than those managing compliance informally.
Cost Considerations for ACO Management Organizations
ACO management organizations operate with lean administrative teams by design. The shared savings model incentivizes cost efficiency, which creates internal pressure against adding permanent administrative FTEs. VA deployment aligns with this incentive: comparable administrative coverage at 30–50% of the annual cost of a full-time hire, with flexible engagement scope.
ACO management leaders exploring VA options for quality coordination and vendor administration can find experienced support at Stealth Agents, which works with value-based care organizations on administrative workflow support.
The ACO Outlook for 2026
With CMS expanding value-based care participation requirements and commercial payers accelerating their own ACO-aligned contract structures, the administrative demands on ACO management organizations will continue to grow through 2026 and beyond. ACOs that invest in scalable administrative infrastructure—including VA-supported vendor management, quality coordination, and compliance documentation—will be better positioned to achieve the shared savings performance their participating providers and payers expect.
Sources
- National Association of ACOs (NAACOS), ACO Administrative Cost Report 2024
- Leavitt Partners, ACO Quality Coordination Effectiveness Study 2024
- Centers for Medicare & Medicaid Services (CMS), MSSP Program Participation Data 2024
- National Association of ACOs (NAACOS), Compliance Survey 2025