Archer v. Legacy Clinics

If you run benefits at a company with 100 to 1,500 employees and you're researching onsite primary care, you're about to discover something the vendor brochures won't tell you: most of the biggest names in the onsite clinic industry weren't built for you, can't economically serve you, and will quietly try to disqualify you in the first sales call.

This guide explains the market honestly. Who the players are. Who they actually serve well. Who got left behind. And what's changed in the last few years that finally makes onsite care viable for employers below the Fortune 500 threshold.

It's written for the benefits leader, CFO, or HR director who is tired of being told their company is too small for the best healthcare benefit on the market.

The structural problem with the legacy onsite clinic industry

The onsite clinic industry as it exists today was built between roughly 2000 and 2015, primarily to serve very large employers — auto manufacturers, big-box retailers, hospital systems, large school districts, federal agencies. The economic model that worked at that scale required certain assumptions: thousands of employees on a single campus, dedicated full-time physician-led staffing, multi-million-dollar annual budgets, and long implementation timelines justified by the size of the eventual operation.

Every legacy vendor you'll encounter — Marathon Health, Premise Health, Everside Health (formerly Paladina), CareATC, Crossover Health, Vera Whole Health, Proactive MD — was structured around variations of that model. Their cost structures, staffing approaches, technology stacks, and sales processes are all optimized for enterprise clients.

This isn't a criticism of those companies. They're often excellent at what they do. The problem is that "what they do" has very little to do with what a 250-employee manufacturer in Tennessee or a 600-employee logistics company in Indiana actually needs.

When a mid-sized employer calls a legacy vendor, the conversation typically goes one of three ways. The vendor disqualifies the prospect early ("our minimum is 1,500 employees"). Or the vendor offers a stripped-down version of their enterprise product at a price that doesn't pencil out for the smaller workforce. Or the vendor wins the deal but delivers a program that underperforms because the operating model wasn't designed for that scale.

The mid-market — broadly, employers with 100 to 1,500 employees — has been the structurally underserved segment of the onsite care industry for the entire history of the industry.

That's now changing.

What changed

Three shifts over the last five to seven years have collapsed the cost of delivering real onsite care, making it economically viable for employers far smaller than the legacy industry could ever serve.

The first shift was the rise of nurse practitioner-led care. NPs deliver excellent primary and acute care for the conditions onsite clinics typically handle, with strong patient satisfaction scores and clinical outcomes equal to physician-led care for those services. The cost difference is significant. A clinic that would have cost $700,000 a year to staff with a physician in 2010 can now be staffed with an experienced NP for a fraction of that cost — without compromising clinical quality.

The second shift was the maturation of telehealth as a coverage extension, not a replacement. The legacy industry treated telehealth as an inferior substitute. The new generation of vendors uses it correctly — as a way to extend a clinician's reach, allowing two or three days of physical onsite presence to provide five days of clinical access. This single architectural change made onsite care economically viable for workforces that previously couldn't justify a full-time clinician.

The third shift was the emergence of mid-market-native vendors. The legacy onsite clinic industry, structurally, can't serve mid-sized employers efficiently. Their cost structures are wrong, their sales cycles are wrong, their implementation timelines are wrong. A new generation of vendors — built from the ground up for the 100-to-1,500 employee segment — has rebuilt every layer of the operating model: leaner overhead, flexible staffing, hybrid delivery models, technology designed for smaller workforces, pricing that works at mid-market scale.

The result is a category that didn't exist a decade ago. Real, full-service onsite primary care — staffed by experienced clinicians, delivering the same clinical outcomes the Fortune 500 has had for years — designed and priced for employers with as few as 100 employees.

How to evaluate vendors as a mid-sized employer

If you're a mid-market employer evaluating onsite clinic vendors, the legacy buying frameworks won't serve you. Most of them were written for enterprise procurement teams. Here's the framework that actually works at your scale.

Ask what their minimum workforce size is. If a vendor's minimum is 1,500 or 2,500 employees, they may take your business if you push hard, but you'll be a small fish in their book and you'll get a version of their enterprise product that wasn't designed for you. Vendors whose typical client is roughly your size will design for you, price for you, and care about you.

Ask who specifically will staff your clinic. At enterprise scale, vendors run dedicated recruiting teams and have deep clinician benches. At mid-market scale, the clinician matters more — they're often the only clinician your workforce will ever interact with. Ask the vendor to commit to a named clinician before you sign, with the right to interview them and decline if the fit isn't right.

Ask about their staffing model. Physician-only models drive up cost without improving outcomes for the conditions onsite clinics typically handle. Modern vendors lean on experienced nurse practitioners, often supported by physician oversight where appropriate. If a vendor's pricing is high and they explain it as "physician-led care," ask whether you actually need physician-led care for your workforce — or whether you're paying for an enterprise model you don't need.

Ask about hybrid coverage. A clinic open five days a week with a clinician onsite five days a week is the enterprise model. A clinic open five days a week with a clinician onsite two or three days and virtual coverage the rest is the modern model. The second one costs dramatically less and, when designed correctly, delivers nearly identical engagement and outcomes.

Ask how they handle abnormal screening results. Biometric screenings without follow-through care are mostly theater. Ask the vendor to walk you through, step by step, what happens when an employee screens positive for hypertension or pre-diabetes. If the answer involves a portal, a referral letter, or "we recommend they see their doctor" — you're paying for a data collection service. If the answer involves a same-day or same-week conversation with a clinician who can prescribe and follow up — you're paying for actual healthcare.

Ask for references from employers your size. Every vendor will offer references. Insist that they be from employers within roughly 50% of your workforce size. A reference from a 5,000-employee enterprise tells you nothing about how the vendor will perform at 250 employees.

Ask what happens if the program doesn't deliver projected ROI. Most vendors include language about ROI in their proposals. Ask what happens at renewal if the projection misses. Vendors confident in their model offer renewal protections. Vendors hedging their bets don't.

Who serves whom: the honest map

Here is how the major onsite clinic vendors actually segment by workforce size, based on publicly available information and their stated focus areas. This is not a competitive attack — it's market information that benefits leaders need and rarely receive.

Enterprise-only or enterprise-primary vendors (typical client size 2,000+ employees): Premise Health, Marathon Health (now part of Everside), Crossover Health, Vera Whole Health. These vendors do excellent work at scale. They are not built for mid-sized employers, and most will either disqualify smaller prospects or deliver an underwhelming version of their enterprise product.

Large-employer-focused but more flexible (typical client 1,000+ employees): Everside Health, CareATC, Proactive MD. These vendors will sometimes take mid-sized clients but their operating model is still optimized for larger workforces.

Mid-market-focused vendors (typical client 100 to 1,500 employees): Archer Health and a small number of similar vendors that built their entire operating model around this segment. These vendors won't take Fortune 500 contracts because they aren't built for that scale — and they shouldn't take them. The trade-off is that they can serve smaller employers with the same quality of care that used to be reserved for the giants, at a price point that actually works.

Direct primary care networks (variable client size): Networks like Nextera Healthcare, Paladina (now part of Everside), and a fragmented landscape of regional DPC providers offer an adjacent model where employers contract with a network of independent DPC clinics. This works well for distributed workforces but typically delivers less integration and lower engagement than dedicated onsite care.

The right vendor for your organization depends on workforce size, geography, and what specific outcomes you're trying to drive. The honest version of this market is that there is no single best vendor — there are vendors who fit specific segments well, and vendors who fit them poorly.

Why mid-market employers should think differently about timing

Here's a strategic point most benefits articles miss: the mid-market window for onsite care is opening now for the first time in the industry's history. Five years ago, the model genuinely didn't work at this scale. Today it does. Five years from now, it will be table stakes — every competitive employer in your industry will have moved.

Employers who implement now capture two advantages. First, they get the immediate operational and financial benefits — lower healthcare costs, healthier employees, a benefits differentiator in the labor market. Second, and often underestimated, they build institutional knowledge and infrastructure ahead of competitors. A company with three years of onsite clinic data, a refined operating model, and an engaged workforce is in a categorically different position than a competitor scrambling to launch a similar program in 2029.

The competitive advantage of being early on a benefits innovation tends to compound. The Fortune 500 figured this out twenty years ago with onsite care. The mid-market is roughly a decade into figuring it out. The window is open now.

What we'd tell you if you called us

We're Archer Health. We were built specifically for the segment this guide describes — employers between roughly 100 and 1,500 employees who don't fit the legacy onsite clinic model.

We'd tell you the truth about whether onsite care fits your situation, even if the answer is no. We'd tell you whether your funding model — fully insured, level-funded, self-funded — supports the financial case. We'd tell you whether your geography and workforce density work for an onsite, hybrid, or near-site approach. We'd give you a realistic ROI projection rather than the optimistic one that wins the deal and disappoints at year-three renewal.

If we're the right fit, we'll tell you. If we're not, we'll tell you that too — and point you toward a better option.

That's the conversation worth having. Not the one where a vendor's enterprise sales team tries to retrofit a model designed for someone ten times your size onto your workforce.

You're not too small. You were just told you were, by an industry that hadn't built anything for you yet.

That's changed.

hello@archerhealth.com · 601-565-0075

This guide is intended as market education for benefits leaders evaluating onsite primary care options. The vendor categorizations reflect publicly available information about each company's stated focus and typical client profile, and are accurate as of publication. Vendor strategies and segment focus may evolve over time.