There is a predictable pattern in how health systems approach locum tenens staffing. A gap opens — a physician retires without a ready replacement, a hospitalist takes unexpected FMLA, a rural service line loses its only FTE — and someone makes a phone call to a staffing agency. The agency delivers a body, at a significant premium, within a few weeks if the system is lucky. The gap closes. Nothing changes about the underlying infrastructure that will produce the same emergency next quarter.
This reactive model is expensive by design. Agencies price for urgency because most of their clients only call when they're already in crisis. The premium on a short-notice fill is not arbitrary — it reflects the genuine cost of maintaining supply for buyers who provide no advance notice of demand.
Health systems that have reduced their locum spend and improved coverage quality have done so by changing the underlying dynamic: building a talent pipeline before they need it, rather than searching for supply after a gap appears. The operational concept is simple. The execution requires discipline that most workforce teams haven't historically applied to contingent physician labor.
What a Talent Pipeline Is Not
It's worth being precise about what a locum tenens talent pipeline is, because the term gets used loosely.
A pipeline is not a list of agency contacts. An agency relationship is a transaction channel, not a supply asset. You do not own the clinicians in an agency's database; you cannot predict their availability; and the agency's interest is to maximize margin on each placement, not to optimize your coverage reliability.
A pipeline is not a historical roster of physicians who once worked your facility. A list of locum physicians you used in 2022 is not a functional pipeline unless you have maintained relationships with those physicians, know their current availability and scheduling preferences, and have a mechanism to reach them with a shift offer faster than any competing facility can.
A functional talent pipeline is an actively managed set of physician relationships in which your facility has invested enough — through credentialing, relationship development, and positive work experiences — to have a credible claim on their scheduling priority. It is infrastructure, not a contact list.
Why Most Health Systems Don't Have One
The structural barrier is organizational, not technical. Building a locum talent pipeline requires someone to own the problem on an ongoing basis — not just when a gap appears.
At most health systems, locum workforce management is nobody's primary job. Medical staff offices manage credentialing for permanent hires. Department chairs manage scheduling. Workforce operations manages float pools. Nobody is specifically responsible for building and maintaining a bench of credentialed locum physicians across service lines before specific gaps emerge.
The result is that every gap triggers a fresh recruitment process. A new physician is identified through an agency, credentialed over several weeks, placed for a single assignment, and then the relationship goes cold. The next gap triggers the same cycle at full cost.
The facilities that have broken out of this loop have done so by assigning explicit ownership: a workforce coordinator, a locum program manager, or — in smaller facilities — a department administrator who takes pipeline maintenance as a defined responsibility with defined metrics. The role doesn't need to be full-time. But it needs to exist.
Step One: Define Your Coverage Architecture
Before building a pipeline, you need to know what you're building it for. Health systems that approach this systematically begin by mapping their coverage architecture: which service lines rely on locum coverage, at what volume, with what specialty requirements, and at what predictable times of year.
This sounds obvious. Most facilities have not actually done it rigorously.
A complete coverage architecture maps:
- Chronic coverage gaps by service line. Which specialties or units are chronically short-staffed to the point that locum coverage is structurally required, not occasionally required?
- Seasonal and cyclical demand patterns. Most facilities have predictable patterns — census spikes during respiratory illness season, coverage gaps during summer vacation windows, academic medical centers with thinning coverage around resident graduation. These are foreseeable; they should be staffed proactively.
- Risk events that trigger acute gaps. FMLA, sudden departures, physician illness. You cannot predict specific events, but you can quantify their historical frequency and plan coverage capacity accordingly.
- Specialty-specific lead times. A hospitalist gap can sometimes be filled in days. An interventional cardiologist gap in a market with limited supply may require months of pipeline work before you have a credible bench available. Understanding lead times by specialty is essential for knowing how much advance pipeline work each service line requires.
Once this architecture is mapped, you have a demand profile. The pipeline exists to meet that demand before the demand becomes an emergency.
Step Two: Build the Credentialing Infrastructure First
The most underappreciated accelerator of locum pipeline effectiveness is credentialing infrastructure. A physician who is not credentialed at your facility cannot work there. A traditional credentialing process takes 30–90 days. This means that any physician you identify after a gap opens cannot be deployed for one to three months — regardless of their availability.
The strategic implication: the only physicians available to fill gaps quickly are physicians already credentialed at your facility. Your functional bench size is not the number of physicians in the market who might work for you — it is the number of physicians currently credentialed at your facility who are available for locum engagement.
Most facilities, when they audit this number honestly, find it is smaller than they thought. The gap between their actual credentialed bench and their theoretical coverage needs is the primary driver of their agency dependence.
Building credentialing infrastructure means two things in practice:
Proactive credentialing of candidate physicians. Rather than initiating credentialing only after a gap is identified, health systems with mature pipelines credential physicians proactively — running credentials for physicians who have expressed interest and whose background checks clear, before a specific shift needs to be filled. This requires administrative capacity and a willingness to credential physicians who may not be deployed immediately. The cost is real but modest relative to the value of same-week deployment capability when a gap opens.
Streamlined credentialing processes. If your credentialing process requires 90 days and repeated document requests, you are paying a structural penalty on every locum placement. As credentialing bottlenecks are the most common reason locum placements fall through or arrive weeks late, the investment in streamlining — a dedicated locum credentialing track, standardized document collection, clear physician-facing status communication — pays back immediately in deployment speed and provider satisfaction.
Step Three: Develop Direct Physician Relationships
The competitive advantage of a health system with a mature locum pipeline is not access to a larger pool of physicians — it is priority within the pool you have. A physician who has worked your facility, had a positive experience, and has a direct relationship with your workforce coordinator is going to take your call before they take a call from an agency recruiter they've never met.
Building these relationships requires intentional investment across three moments in the locum lifecycle.
The first assignment. A physician's first assignment at a facility sets the template for every future interaction. Facilities that provide a genuinely well-organized first assignment — clear orientation, reliable logistics, clinical support that matches what was promised, and a direct point of contact who solves problems in real time — convert first-time providers into repeat candidates at dramatically higher rates than facilities that treat logistics as an afterthought.
This is not complex to execute, but it requires ownership. Someone at your facility needs to be responsible for the first-assignment experience — not just the scheduling, but the housing logistics, the clinical orientation, the end-of-assignment follow-up. Facilities that have assigned this responsibility explicitly report meaningfully higher rates of physician reinstatement requests after a first assignment.
The post-assignment relationship. The relationship between assignments is where most facilities lose ground. An agency has a commercial interest in staying in front of physicians it places — maintaining contact, learning their scheduling preferences, building rapport that influences future placement decisions. Most health systems have no mechanism for maintaining direct contact with physicians between engagements.
A light-touch outreach cadence — a quarterly email about upcoming scheduling needs, a personal note when a shift opens in a specialty the physician covers, a genuine check-in about their availability — does not require significant resources. But it creates a relationship that competes favorably with the agency model precisely because it is direct and personal.
Rate and terms discussions. Platform-enabled direct relationships give both facilities and physicians full market-rate transparency. Physicians can see what the market is actually paying for their specialty and geography; facilities can understand cost structures clearly rather than working from opaque bill rates. Many locum physicians prefer this model once it is explained clearly, because transparent rate conversations benefit both parties.
The conversation is more direct than many facilities expect. When framed as a transparent, platform-managed relationship — with clear rates, reliable credentialing infrastructure, and predictable scheduling workflows — a significant portion of locum physicians who have worked your facility will express preference for it.
Step Four: Stratify Your Pipeline by Engagement Level
Not every physician in your pipeline is the same. A functional pipeline has at least three tiers of engagement.
Tier One: Core rotation physicians. These are physicians who have completed multiple assignments at your facility, have indicated ongoing availability, and have an established pattern of engagement. They are your highest-priority relationships — the physicians you call first, who have clear knowledge of your facility's culture and clinical workflows, and who represent the most reliable coverage option you have. Tier One physicians typically number in single digits for most service lines.
Tier Two: Credentialed occasional providers. Physicians who have completed at least one assignment at your facility, are credentialed in your system, and have expressed openness to future engagement. They are less reliable than Tier One providers — scheduling is not consistent, and you may compete with other facilities for their availability — but they provide genuine backup capacity. Tier Two physicians are your immediate bench when a gap opens and Tier One physicians are unavailable.
Tier Three: Pipeline candidates. Physicians who have expressed interest in future assignments, have been identified as good candidates, but have not yet completed credentialing or their first assignment. These are your future Tier One and Two providers — the physicians you are investing in now to have available six months from now.
Most facilities with reactive locum programs have no Tier One or Two physicians at all. Every gap triggers Tier Three processing — candidate identification, full credentialing, first assignment — at full cost and full delay. The pipeline investment is about building the upper tiers so that most gaps can be filled from existing relationships at reduced cost and near-zero lead time.
Step Five: Build the Data Infrastructure
A pipeline that exists in a coordinator's head is not a pipeline — it is a memory that disappears when the coordinator leaves and cannot be analyzed to improve over time.
Functional pipeline management requires data infrastructure proportional to the scale of your locum program. For smaller facilities, this might be a well-structured CRM or a dedicated spreadsheet with defined fields. For larger health systems with significant locum spend, it warrants dedicated workforce management technology.
The minimum data set for locum pipeline management includes:
- Physician-level records: specialty, credentialing status and expiration dates, scheduling preferences, past assignment history, current availability windows
- Service-line coverage requirements: gap forecasts by service line, lead time requirements, rate benchmarks
- Relationship management: last contact date, outreach cadence, notes from prior assignments
- Performance metrics: fill rate by tier, cost per fill by channel, first-to-fill time, gap rate by service line
Without this data, pipeline management is impressionistic. With it, you can see which service lines are under-invested, which physicians are approaching the need for credentialing renewal, which outreach cadences are converting to placements, and where your gap rate risk is concentrated.
The Role of Predictive Planning
Pipeline management and predictive planning are complementary. A well-maintained pipeline increases your supply-side capacity. Predictive planning reduces your demand-side surprise — giving you more lead time to activate pipeline resources before a gap becomes an emergency.
The staffing gaps that are most expensive are the ones that emerge with no advance notice: the same-day cancellation, the sudden leave, the unexpected resignation. These cannot be fully eliminated. But many facilities that analyze their gap patterns find that a significant fraction of their "emergencies" were foreseeable — recurring seasonal patterns, predictable census spikes, known FMLA windows — and simply weren't planned for.
As unfilled shifts cost far more than the fill rate alone when downstream revenue impact, staff burnout, and quality metric degradation are included, even a modest improvement in gap predictability — extending the fill window from same-day to 48 or 72 hours — has substantial financial impact. A physician called today for a shift three days from now has options and will take a call from a facility she has a relationship with. A physician called at 5:30am for a shift starting at 7am has very few options, and whoever gets to her first wins by default.
Measuring Pipeline Health
A talent pipeline without metrics is a hypothesis. Facilities that manage their pipelines effectively track a small number of indicators on a recurring basis.
Fill rate by tier. What percentage of gaps are filled from Tier One providers? From Tier Two? From Tier Three or external agency channels? Tier distribution is the most direct measure of pipeline maturity. A program filling 70% of gaps from Tier One and Two providers is mature; one filling 70% from external channels has almost no functional pipeline.
Average fill time by tier. How long does it take to fill a gap using each channel? Tier One should fill in hours. Tier Two in one to three days. External channels in days to weeks. If your Tier One fill time is measured in days, your relationship investment hasn't produced the priority access it should.
Pipeline depth by service line. How many credentialed Tier One and Two providers do you have per service line? An emergency medicine program with three Tier One providers and eight Tier Two providers has real backup capacity. One with a single Tier One provider has a fragile pipeline that breaks the moment that physician is unavailable.
Cost per fill by channel. What does it actually cost to fill a shift through each channel, including administrative time, premiums, and agency margins? Most facilities find a $30–60/hour cost differential between Tier One direct fills and urgent agency fills. At scale, this differential is the primary financial argument for pipeline investment.
What the Build Looks Like in Practice
Building from scratch — at a facility that currently has no functional pipeline and relies primarily on reactive staffing — typically takes 12–18 months to reach a state where the pipeline is handling a meaningful portion of coverage through proactive, relationship-driven fills.
The first 90 days are mostly infrastructure: mapping coverage architecture, auditing existing credentialed physician relationships, assigning ownership, and beginning proactive credentialing for candidate physicians who have expressed interest. This phase is unglamorous and produces no visible coverage improvement. It is also non-negotiable — you cannot skip the foundation.
The next six months are relationship-building: converting first assignments into Tier Two relationships, maintaining outreach with credentialed physicians between engagements, developing the rate and terms conversations that shift agency relationships into direct ones. Coverage improvement starts to become visible here, particularly for service lines with predictable gaps.
By month twelve to eighteen, a facility with disciplined execution will typically have a functional Tier One and Two bench in its highest-volume service lines, a measurable reduction in agency fill events, and a unit cost for covered shifts that is lower than it was at the program's start. The pipeline is not complete — pipeline maintenance is a permanent operational function — but it is generating the ROI that justified the investment.
For health systems managing multiple facilities and service lines, the investment is proportionally larger, but so is the return. A health system filling 500 locum shifts per year that shifts even half of those from agency-mediated to direct channel placements is generating annualized savings in the range of several hundred thousand dollars — before accounting for the coverage reliability improvements and the reduced downstream costs of better-filled gaps.
Rediworks helps health systems build direct locum physician pipelines with transparent rates, portable credentialing, and the workflow tools to manage pipeline relationships at scale. If your current approach to locum coverage is reactive, learn how the pipeline model works, or explore how facilities similar to yours have structured their programs.