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Impact of Change
The ambulatory tipping point has arrived
We've been talking about the outpatient shift for years. But the data is no longer forecasting a trend—it’s confirming a reality. And for health system leaders still dragging their feet, the window is closing.
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One of the most consequential decisions a health system can make over the next decade is deciding where it believes care will happen.
Increasingly, the wrong answer is “the hospital.”
The industry’s center of gravity is moving beyond the four walls of the acute care campus and into ambulatory surgery centers (ASCs), physician offices, virtual platforms, retail clinics, and the home. Patients are driving it, technology is enabling it, and policy and reimbursement changes are accelerating it.
Still, many organizations insist on treating ambulatory care as a supporting strategy rather than the operating model emerging around them.
The data suggests that’s a risky bet.
Our 2026 Vizient Impact of Change forecast projects overall outpatient volume to grow 20% over the next decade, reaching approximately 6.2 billion encounters, while inpatient utilization growth softens. The trend is already reshaping how care is delivered, where investments are made, and which organizations are best positioned for growth.

- Ambulatory care is becoming healthcare’s new center of gravity. Overall outpatient volume is projected to grow 20% over the next decade while inpatient growth continues to soften, fundamentally reshaping where care is delivered.
- The shift is accelerated by forces that are unlikely to reverse. Pharmaceutical advances and evolving reimbursement policies are all moving more care beyond the four walls of the hospital.
- Health systems can’t approach ambulatory care as a side strategy. Success requires rethinking workforce models, operational analytics, capacity planning, and capital investment across a distributed network of care settings.
- Don’t assume any service line is immune. Even specialties once considered firmly hospital-based, including cardiovascular services, are seeing more procedures migrate to outpatient environments as technology and clinical capabilities evolve.
- The market is already signaling where value will be created next. As for-profit organizations increase investment in ASCs, diagnostic centers, and other ambulatory assets, health systems should view it as a signal that growth, margin, and patient demand are increasingly concentrating outside the hospital campus.
What’s driving the shift, and why it’s accelerating
Three forces are converging, and each one is picking up speed.
- Pharmaceutical advances are rewriting where care happens. We're watching infusions shift to subcutaneous injections, biologic treatments move into outpatient infusion clinics, and cell and gene therapies beginning to replace years of surgery and procedures. These are all curative treatments that don’t require a hospital stay.
- The ongoing shift away from inpatient care continues. The phase-out of the inpatient-only (IPO) list is a significant policy shifts. Procedures like lumbar and thoracic spinal fusion, motion preservation procedures and revision hip replacement, and can now be covered by Medicare when provided in an outpatient setting. Meanwhile, the ASC covered procedure list continues to expand: At the start of 2026, CMS added 276 procedures due to criteria changes and 271 added due to IPO list changes.
- Payers are sending a signal. The IPO list phase-out may enhance a growing sentiment among payers questioning whether care needs to be delivered in the inpatient setting at all. Nobody is forcing the move, but the door is open. And when payers start questioning the necessity of inpatient delivery, health systems that don't adapt will find themselves on the wrong side of reimbursement dynamics.
- In The ASC Shift blog series, our experts explore the role of strategic planning, operational rigor, and supply chain innovation as more complex surgeries move to outpatient settings.
- A recent Edge Perspectives podcast delves into tactical, operational, and strategic metrics for the ambulatory space.
- On a recent Knowledge on the Go episode, Andrea Boohaker, associate vice president of ambulatory services at UAB Medicine, discusses UAB’s work to optimize advanced practice provider templates and improve access in the ambulatory setting.
You must act now
We want to be direct here, because the stakes don't allow for hedging: The time to act was yesterday. The health systems that have made a concerted and consistent investment in consumer-centric care, in meeting patients where they are, and in serving patients in the setting that’s most suited to and safest for them are the ones doing the best. And those who may be lagging on that front will continue to lag. That disparity is only going to widen.
Every quarter your organization delays building ambulatory capacity, investing in distributed-care workforce models, or standing up the operational intelligence to manage a dispersed network is a quarter of lost ground.
So, what does keeping pace actually look like? Here are the concrete strategies we believe health system leaders need to execute on now.
Strategy 1: Let safety lead, but don't let it become an excuse
Safety has to be the No. 1 consideration in every site-of-care decision. Where is the patient going to receive the highest quality and highest level of care that’s needed? The clinical rationale needs to be sound, and the evidence for clinical quality needs to be comparable (if not better) than what the inpatient setting offers.
But here's the nuance we see leaders miss: Safety is the starting point of the conversation, not the end of it. Too often, the argument for keeping a service in the inpatient space defaults to safety without any real interrogation of what would be required to move it. The right question is what would it take to make this safe to move, and are we willing to invest in that?
There will be market-to-market variation in what can shift and how. Workforce availability is a real constraint—even as the center of gravity shifts for demand, there may not be the staffing in the market to appropriately deliver that care safely. Quality and safety have to rule the day. But treat those constraints as problems to solve, not reasons to stand pat.

Strategy 2: Rethink workforce deployment across the entire care continuum
If you think you can’t provide outpatient services, you’re not looking hard enough at how you’re deploying resources. That's where the real opportunity lies.
Here's the truth that many health systems haven't fully internalized: Much of the ambulatory care that's offered doesn’t need to be provided by a physician. Leverage your APPs, your techs, and your aides. Think about ways to deploy technology to carve out additional capacity for ancillary services.
Get creative. Consider sitter services: How can you use technology to free up the human sitter currently stationed in a recovery room and redeploy them where they’re needed more? How can you use virtual tools to let a single provider scale their patient panel or tend to more rooms at a given time?
The workforce strategy for the outpatient shift should center on deploying the people you have differently—across a distributed network, supported by technology, and operating at the top of their license.
Strategy 3: Build ambulatory operational intelligence
Health systems are far more likely to have advanced analytic capabilities and operational dashboarding for their inpatient sites of care. But ask the same question about their ambulatory sites, and the answer is often silence.
If you’re not tracking capacity, supply, and demand across your ambulatory network in real time, you’re flying blind. Proactive operational dashboarding across the entire care continuum is key. You need to know where capacity exists, where demand is building, and how to move people and resources in response.
The inpatient world has had this for years. The ambulatory world needs it now. And the health systems that build it first will have an operational advantage that compounds over time.

Strategy 4: Don’t assume any service line is immune
Here's a risk we see health systems taking that they shouldn’t: assuming that any service line or care modality is immune from shifting or being disrupted. That assumption is a liability.
Consider cardiovascular services. We’ve seen a lot of reticence and hesitance around shifting cardiovascular patients outside the four walls of the hospital—it’s a very sick population, and the instinct to protect it is understandable. But the Impact of Change forecast shows cardiovascular medicine projected to grow 29% in the outpatient setting over the next decade. The procedures that were unthinkable in an ASC five years ago are on the migration path now.
The lesson: If you think your service line is the exception, you're probably the one being disrupted. Every service line needs a site-of-care strategy.
Strategy 5: Read the for-profit signal and move
One of the most reliable indicators of where healthcare is headed is where sophisticated investors are putting their money.
That’s why we pay close attention when large for-profit healthcare organizations accelerate investment in ASCs, diagnostic centers, and other outpatient care settings. These organizations are making a calculated judgment about the future economics of healthcare delivery. They're betting that growth, margin, and patient demand will increasingly concentrate outside the hospital campus.
Health systems should take notice when organizations known for financial discipline and operational rigor are making the same bet at scale.
The for-profits are responding to the same forces outlined throughout our forecast: favorable reimbursement dynamics, a growing list of procedures eligible for outpatient delivery, advances in clinical technology, and consumers who increasingly value convenience and access.
The point isn’t that health systems should mimic every move made by the for-profit sector. But these investments provide a signal. The market is showing us where value is being created and where future growth is expected to occur.

The gap will widen. Which side will you be on?
Here’s what we'd ask of health system leaders reading this: pull up your ambulatory strategy. Pressure-test your assumptions about which service lines are immune. Audit your operational dashboards—are they built for the inpatient world you're leaving behind, or the ambulatory world you're entering? Look hard at your workforce deployment: Are you leveraging every team member at the top of their license, supported by technology?
The time to act was yesterday. But today is still better than tomorrow.
The Vizient Impact of Change forecast provides health system leaders with the analytics, scenario modeling tools, and expert guidance needed to navigate utilization shifts across service lines, sites of care, and planning horizons. Learn more about Impact of Change and the rest of our comprehensive data and insights portfolio.
Authors

Karyl Kopaskie
Principal, Vizient Strategy Intelligence
Karyl Kopaskie, PhD, is a healthcare strategy expert and leader at Vizient. In her role as principal, she partners with members to navigate the complexities of a rapidly evolving healthcare landscape. Her work focuses on strategic prioritization, forecasting future trends in care delivery, and analyzing inpatient and outpatient utilization data to generate actionable insights. Through her leadership, she helps health...

Tori Richie
Vizient Senior Consulting Director, Intelligence
As a senior director on the Vizient Intelligence team, Tori Richie leads Vizient’s proprietary Impact of Change® forecasting product, which projects 10-year patient demand across inpatient and outpatient services. She focuses her research on macro-level trends impacting future health care utilization trends and works closely with Vizient’s team of service line experts to ensure the forecast continues to drive value...