Physician shortages aren't a monolith. While the United States faces a broad healthcare workforce gap projected to reach 86,000 physicians by 2036, the pressure isn't distributed evenly. Some specialties are experiencing shortfalls that have been building for a decade. Others became acute almost overnight — pushed past a tipping point by pandemic-era burnout, retirement waves, and a credentialing pipeline that simply can't keep pace with demand.
For locum tenens clinicians, this creates real opportunity. For facilities, it's an increasingly urgent operational reality. Here's a specialty-by-specialty breakdown of where locum demand is highest in 2026 — and what's driving it.
Emergency Medicine
Emergency medicine has been at the center of the locum staffing conversation for years, and 2026 is no exception. The specialty is facing a convergence of pressures: emergency departments are seeing higher patient volumes as primary care access shrinks, but residency programs haven't expanded to meet demand. The Association of American Medical Colleges (AAMC) has identified emergency medicine as one of the highest-shortage specialties through the early 2030s.
What's changed recently is the severity of burnout-driven exits. Emergency physicians who held on through the COVID-19 surge years are increasingly stepping back from full-time positions — not leaving medicine, but restructuring toward locum arrangements that give them more control over when and where they work. This creates an ironic dynamic: the supply of emergency medicine locums is growing at the same time that facility demand is accelerating.
For facilities, the implication is straightforward: locking in reliable emergency medicine coverage on a long-term locum basis is now a competitive advantage, not just a stopgap. Facilities that offer consistent shift availability, transparent pay, and a smooth credentialing process are winning the best physicians. Those that don't are cycling through last-minute placements at higher cost and lower quality continuity.
Psychiatry and Behavioral Health
If there's a specialty where the locum shortage has reached genuine crisis levels, it's psychiatry. The United States has approximately 45,580 practicing psychiatrists — and the demand for mental health services has outpaced that supply by a wide margin. The Health Resources and Services Administration (HRSA) estimates that over half of U.S. counties have no practicing psychiatrist at all.
The downstream effect on facilities is acute. Hospitals and health systems are extending psychiatric hold durations, relying on telepsychiatry as a bridge, and in many cases simply unable to offer the inpatient psychiatric coverage they're licensed to provide. Locum psychiatrists command among the highest bill rates in the industry — a direct reflection of this scarcity.
Rural facilities face the steepest challenge. A rural hospital with no local psychiatric coverage options is almost entirely dependent on locum providers for any inpatient psychiatric services. The rural hospital staffing crisis is most severe in behavioral health, where the combination of geographic unattractiveness and specialty scarcity creates a market that's genuinely difficult to staff even with premium compensation.
For clinicians considering locum work in psychiatry, the leverage is significant. Demand is stable, rates are high, and facilities are willing to negotiate on housing, scheduling flexibility, and contract terms in ways that less pressured specialties simply aren't.
Primary Care: Family Medicine and Internal Medicine
The primary care shortage doesn't generate the same headlines as emergency medicine or psychiatry, but the numbers are stark. Family medicine and internal medicine face some of the highest projected shortfalls of any specialty — and because primary care is the entry point for the broader healthcare system, gaps here create cascading effects everywhere else.
Part of the dynamic is structural. Medical school graduates increasingly choose higher-compensating specialties, and the relative pay gap between primary care and procedural specialties has widened, not narrowed, over the past two decades. Federally Qualified Health Centers (FQHCs) and rural clinics — which rely heavily on family medicine coverage — are often the facilities most dependent on locums, and they're competing against health systems with far more resources.
Locum primary care work, particularly in family medicine, is well-suited for clinicians who want genuine schedule flexibility. FQHCs and community health centers often have stable, predictable patient populations, which can be a relief compared to the intensity of emergency department coverage. Locum placements can last anywhere from a few weeks to a year or more, offering a different rhythm than the shift-based model of emergency medicine locum work.
Anesthesiology
Anesthesia is experiencing a demand surge that intersects with a tight supply pipeline. As outpatient surgical volume has recovered and expanded beyond pre-pandemic levels, anesthesia coverage has become a rate-limiting factor for procedures across the country. The shortage is compounded by scope-of-practice politics around Certified Registered Nurse Anesthetists (CRNAs) — in states where physician supervision requirements remain strict, demand for locum anesthesiologists specifically is elevated.
This specialty also illustrates the difference between raw physician count and effective coverage capacity. Anesthesiologists who burned out during the pandemic aren't necessarily leaving the workforce — many are moving to shorter locum engagements with more predictable hours and higher per-shift compensation. Locum anesthesia is one of the most financially attractive arrangements in the specialty, with day rates that often exceed what salaried positions can match.
Hospitalist Medicine
The hospitalist model has become the operational backbone of inpatient care at most U.S. hospitals. But the specialty is chronically understaffed, with facilities across the country running hospitalist services with fewer physicians than they need — relying on overtime and locum coverage to fill the gaps.
Locum hospitalist placements are among the most common and consistent in the industry. The work is broadly applicable across facility types, credentialing is relatively predictable, and the shift-based scheduling model translates naturally to locum arrangements. For facilities, hospitalist locums offer genuine operational flexibility: they can be deployed to cover specific service lines, seasonal volume increases, or extended departures without the overhead of a permanent hire.
As the hidden costs of unfilled shifts illustrate, even a single uncovered hospitalist shift can have significant downstream financial consequences. The specialty's operational centrality makes it one of the highest-priority locum coverage categories for most health systems.
Radiology
Radiology occupies an interesting position in the locum landscape. The specialty was transformed by teleradiology — the ability to read studies remotely — which dramatically expanded the effective geographic reach of any radiologist. But even with teleradiology as a partial buffer, there are meaningful gaps in coverage, particularly for procedural radiology (interventional radiology), after-hours reads, and facilities in markets where teleradiology infrastructure hasn't been built.
Radiologists considering locum arrangements often find that the specialty's remote-friendly nature creates more flexibility than almost any other specialty. The locum market for radiology includes both on-site placements and teleradiology agreements, giving clinicians more options for structuring their practice than most specialty counterparts.
The Underlying Pattern: What's Driving Demand Across Specialties
While each specialty has its own dynamics, several themes cut across all of them.
Retirement acceleration. A significant cohort of physicians who entered practice in the 1980s and 1990s are now in their 60s. Many accelerated retirement plans during and after the pandemic. The specialties most affected are those where the physician workforce skews older — including primary care, psychiatry, and anesthesiology.
Pipeline constraints. Medical school class sizes have grown modestly over the past decade, but residency program slots — controlled by Medicare funding — haven't expanded proportionally. This means even as more physicians enter training, there's a ceiling on how many can complete specialty training in any given year.
Burnout and career restructuring. Physician burnout remains a structural force reshaping the workforce. Physicians aren't leaving medicine in large numbers — but many are leaving permanent positions in favor of arrangements that give them more autonomy over schedule and workload. Locum tenens is the most common structural alternative, and the specialties with the highest burnout rates are seeing the largest shift toward locum arrangements.
Geographic maldistribution. The physician shortage isn't just about total numbers — it's about where physicians practice. Rural and underserved urban markets face shortages that are far more severe than national averages suggest. Locum tenens plays a disproportionate role in these markets, as permanent placement is often not viable.
What This Means If You're a Clinician
If you're in one of the high-demand specialties above, your negotiating position is strong. Rates are competitive, facilities are flexible on scheduling, and the ability to pick your geography — whether you want to try a market you've never practiced in or stay close to home — is real.
The main friction in locum work has historically been operational: licensing delays, credentialing paperwork, and the complexity of managing multiple facility relationships. Platforms built to streamline this process are changing the math significantly. AI-driven credentialing verification, consolidated licensing support, and transparent pay structures are removing the friction that previously made locum work appealing in theory but difficult in practice.
If you're considering the transition, starting with the basics of locum tenens work is the right first step — understanding how licensing, contracts, and compensation work before your first placement will save you significant headaches.
What This Means If You're a Facility
Understanding specialty demand dynamics isn't just interesting — it has direct operational implications.
The specialties with the highest demand are also the ones where the best locum clinicians have the most options. That means facilities competing for emergency medicine, psychiatry, and primary care locums need to offer more than just a bill rate. Physicians in these specialties are evaluating the quality of the opportunity: How quickly does credentialing move? Is housing and logistics handled? Is scheduling predictable, or is there constant last-minute pressure?
Facilities that have built streamlined, clinician-friendly locum programs consistently outperform those that treat locums as an interchangeable commodity. In a tight market, the quality of the experience you offer clinicians is a direct input to the quality of coverage you receive.
The specialty shortage landscape in 2026 is defined by specialties that were already under pressure facing a workforce retirement wave, combined with a credentialing and training pipeline that can't close the gap on any reasonable timeline. For locum tenens — clinicians and facilities alike — this is the operating environment. The organizations and physicians that understand it clearly will have a significant advantage over those that don't.