Health systems face intense pressure to care for more patients with fewer resources. But before adding capacity, leaders must ask a harder, more fundamental question:
Are we fully using the clinical capacity we already pay for?
In many organizations, the answer is no. Capacity often exists, but it isn’t visible. This hidden capacity – your shadow inventory – makes it harder to match patient demand to the right care, at the right time and in the right setting.
Without a complete view of availability across physicians, nurses, advanced practice providers (APPs), locations and modalities, many health systems are frustrating patients and leaving panels unfilled and further straining budgets while clogging select locations. But a solution exists. Let’s look at how to expand patient access by uncovering the shadow inventory that’s hiding in plain sight.
The patient access reality check
We’ve crunched the numbers on patient access. And they tell a difficult story.
The average wait for a primary care physician appointment is 31 days, according to AMN Healthcare’s 2025 Survey of Physician Appointment Wait Times. That’s up 19% since 2022 and a staggering 48% since 2004.
Specialist wait times are equally concerning. On average, patients wait:
- 42 days to see an OB/GYN
- 40 days to see a gastroenterologist
- 33 days to see a cardiologist
For health systems at or above these numbers, finding the root cause of patient access problems is imperative to reduce waits and keep patients from looking elsewhere.
Why ‘just hire more’ is a risky default
Financial realities make adding headcount next to impossible for most health systems. Kaufman Hall’s National Hospital Flash Report (covering September 2025 data) places the median year-to-date operating margin at 2.9%. To put that in perspective, for every $100 a hospital earns, it keeps less than $3. That leaves no financial cushion to absorb a hiring spree.
Expenses keep climbing faster than revenue, too. Medical practices saw their average year-to-date operating expenses rise by roughly 11.1% year over year in 2025, according to data from the Medical Group Management Association (MGMA).
The largest line item, of course, is labor, which accounts for 56% of total health system costs. When margins are razor-thin and labor costs are accelerating, hiring your way out of a patient access problem is unsustainable. A better approach is finding ways to expand current clinical capacity. That’s where shadow inventory comes into play.
What is shadow inventory, and how does it form?
Shadow inventory refers to valid provider appointment slots that exist but can’t be booked because the health system can’t see or route patients to them. This creates a phenomenon where the organization “feels full” but has room for growth.
How does shadow inventory form? Often it’s from one of these two structural flaws:
- Inaccurate provider data. Each provider’s specialties, credentials, locations and board certifications must be consistent and easily accessible. If they’re not, a system can’t match patients to the best-fit provider.
- Siloed scheduling. This is often a visibility issue. Without a clear view into available appointments at all modalities, including nearby clinics, urgent cares and virtual visits, key slots go unfilled while other providers and locations are booked months out.
To see how these silos create shadow inventory, consider an enterprise health system with 100 clinics. Each location typically manages its own schedule with its own local rules. If a patient calls the gastroenterologist and is told the soonest available appointment is in three months, the conversation could end there. But they don’t realize a new provider at another location is available this week. And maybe they do know, but is that recommendation automatic? Is it part of an internal navigational system that recommends and routes patients based on your rules? And keeps care moving because it knows your capacity across locations, providers and navigates patients based on appropriateness, costs, availability and convenience?
Because the gastro clinic can’t see the bone and joint center’s schedule, that slot stays empty. The patient delays care, winds up in a higher-cost venue like the emergency department, or calls a doctor with a competing health system who can see them quickly. In this example, the patient needed care. The system had availability. But they failed to make the connection.
Other industries have solved their capacity crises
Other industries that manage time-constrained capacity learned long ago that availability only has value if it’s visible and can be acted on in real time.
Like health systems, airlines and hotels operate with fixed inventory and highly variable demand. Their challenge is matching their available capacity with demand before it expires.
Healthcare faces the same constraint. When appointment slots go unused because systems can’t see or route demand effectively, that capacity is lost.
Healthcare’s traditional capacity fix, a digital front door, isn’t enough
Health systems have invested considerable time and money to address capacity issues by building attractive digital front doors. Many look amazing. But they aren’t enough to solve the access problem or uncover their shadow inventory.
Here’s why: Most digital front doors are dependent on data. If the data behind the scenes is inaccurate and rules conflict between provider types, locations or modalities, a sleek digital front door only digitizes the dysfunction.
What’s more, many digital front doors rely on outdated “Find a Doctor” tools that use static keyword matching to connect patients to available capacity. But they lack the logic to understand a patient’s search intent, determine the appropriate level of acuity, scan all available appointment slots across the organization’s portfolio of care, and provide a complete range of options. Without that intelligence, shadow inventory remains invisible.
Patient navigation makes shadow inventory visible
To reveal their shadow inventory and make better use of existing clinical capacity, health systems need smarter ways to match patients with providers at any level (nurses, APPs, PAs) from the moment of search, and factor in all modalities of care (same-day, virtual, in-person).
Patient navigation solutions go a step beyond digital front doors by activating all of the capacity information health systems already have — provider schedules, locations and workflows — making invisible inventory visible.
Instead of finding an open slot, navigation tools guide patients to the most appropriate care venue based on acuity level. A patient with symptoms of the common cold can be routed to a nurse practitioner or physician assistant, opening up appointment slots for a primary care physician to see higher-acuity patients. Low-acuity patients can also be directed to virtual care as needed to free up in-person visit capacity.
Expand capacity without adding headcount
Health systems using patient navigation tools like DexCare are making better use of their clinical resources, delivering real-world results, including:
- A 5-day average reduction in time-to-appointment
- Saving 350,000 emergency department hours per year
- Opening slots to accommodate 30% more new patients
Want to see where shadow inventory exists in your health system and how to activate it? Start a conversation with us today.
