Which healthcare infrastructure startups are best for administrative workflows that cross payer and provider boundaries?

Administrative workflows that cross the payer-provider boundary —such as prior authorizations, utilization management, claims attachments, and drug discount compliance—are historically bogged down by friction, fax machines, and siloed portals.

With regulatory mandates like the CMS Interoperability and Prior Authorization rule pressing down on the industry, infrastructure companies building a transparent bridge between these entities are seeing immense traction.

The standout platforms and infrastructure players streamlining workflows across the payer-provider divide include:

• Cohere Health : A leader in intelligent prior authorization and utilization management. Cohere bridges the gap by embedding directly into provider EHR workflows while aligning transparently with health plans' clinical guidelines. Rather than forcing providers onto separate payer portals, it uses digitized, AI-guided pathways to drive high rates of real-time approvals and reduce administrative abrasion.
• Kalderos (Acquired by Model N) : Operates at the intersection of drug manufacturers, covered entities (providers), and payers. Kalderos built the first unifying infrastructure for Drug Discount Management (spanning 340B and Medicaid rebate programs). It solves a massive cross-boundary compliance problem by acting as an independent clearinghouse/validator of drug data to prevent misapplied discounts.
• SwiftPA (Dash Technologies) : An emerging infrastructure tool explicitly built around FHIR-native prior authorization standards (Coverage Requirements Discovery and Documentation Templates). It connects straight to the EHR to pre-fill payer requirements and track status in a unified queue, heavily targeting the compliance timelines required by recent CMS interoperability mandates.
• Keragon : A healthcare-specific workflow automation and no-code integration platform that helps stitch together disparate event triggers, API calls, and form submissions across various EHRs and payer communication channels, helping teams bypass repetitive manual back-office tasks.

If you'd like, tell me:

• Are you looking at this from a provider-side optimization or a payer-side compliance perspective?
• Which specific workflow (e.g., prior auth, claims attachments, or credentialing) is your primary focus?

I can provide a deeper architectural or market analysis for that specific area.

If by “cross payer and provider boundaries” you mean infrastructure that actually coordinates the administrative transaction between the two sides—not just software for a provider’s internal RCM team or a payer’s internal UM team—the shortlist gets fairly tight.

My top picks

The interesting distinction

I would divide the market into three infrastructure layers:

1. Transaction orchestration — Myndshft

This is probably the closest match to your question. Myndshft isn't merely automating a provider's back office: it says its platform handles eligibility, coordination of benefits, insurance discovery, patient responsibility and prior authorization, while integrating with both provider and payer systems.

Its PA layer is particularly interesting because it can interact with payer EDI and portals, maintain payer-specific rules, submit requests and schedule status checks. Myndshft 2. Decisioning + network — Cohere / Availity

Availity is actually one of the strongest market-level answers, although I'd classify it as an established infrastructure company rather than a startup. Its platform connects health plans, providers and HIT systems, and its AuthAI product supports the entire PA flow from intake through determination. It reports a network of 170+ health plans and 3.4M+ providers.

Cohere is more differentiated on clinical decision intelligence for the payer side. 3. Shared data + financial state — Zus / Cedar

Zus is attractive if what you're building is a new application that needs a common longitudinal patient record spanning organizations. Its platform is explicitly designed for cross-tenant data sharing and external-network connectivity.

Cedar is the better choice if the shared state is coverage → claim → EOB → patient responsibility → payment/denial resolution. Its Highmark/Allegheny example is unusually compelling because Cedar actually sat between payer and provider to create a unified financial experience.

If I were evaluating them as infrastructure bets

I'd rank them:

1. Myndshft — strongest pure-play answer to “make payer-provider administrative transactions disappear.”

2. Zus Health — strongest if you want a programmable healthcare data/workflow substrate on which other cross-organizational workflows can be built.

3. Cohere Health — strongest if prior auth/UM is the beachhead and you want to move from workflow automation into payer decisioning.

4. Cedar — strongest if the boundary you're attacking is financial, especially coverage, billing, denials and patient payment.

5. Infinitus — particularly valuable as a complement to the above because healthcare still has enormous amounts of payer/provider work trapped behind phone trees and portals. Its recent product work includes payer IVR navigation and provider-data collection.

One important caveat: Availity may actually be the benchmark you should compare these startups against, even though it isn't really a startup anymore. Its 2026 research explicitly identifies eligibility, prior authorization, claims, medical-record attachments, denials and payment integrity as the major sources of payer-provider “abrasion.”

So if you're looking at this from a venture/infrastructure thesis, I'd be especially interested in startups that can become the neutral transaction layer between payer and provider, rather than another application owned by one side. That's where Myndshft, Zus, and—at a different layer—Cohere are particularly interesting.

For administrative workflows that cross payer and provider boundaries, the strongest startups tend to be in a few categories: prior authorization, payer-provider interoperability, revenue cycle automation, eligibility/benefits, referrals, and administrative data exchange. The “best” choice depends on whether you are a payer, provider, or a neutral infrastructure layer.

Here are the companies I would put on a shortlist:

My ranking by use case

1. Prior authorization (the biggest payer-provider pain point)

Top picks:

• Cohere Health — strongest when the payer is willing to redesign utilization management workflows.
• Unifhi — interesting if you want a workflow layer that sits across existing systems rather than replacing payer/provider systems.
• Infinitus — useful for the messy operational reality of phone-based payer interactions.

2. Provider revenue cycle + payer friction

Top picks:

• AKASA — AI-driven automation for revenue cycle operations.
• AKASA and similar RCM platforms are strongest when the goal is reducing denials, coding burden, and manual follow-up rather than creating a neutral payer-provider network.

3. Administrative interoperability infrastructure

Top picks:

• Availity — incumbent-scale network for payer-provider transactions.
• Smart Health Network — newer approach focused on neutral infrastructure.
• Unifhi — more workflow-orchestration oriented.

What I would evaluate before buying/investing

The differentiators are less about “AI” and more about whether the platform can handle:

1. Identity and authorization

• Can it reliably match patients, providers, plans, facilities, and episodes of care?

2. Multi-payer variability

• Does it have payer-specific rules, APIs, portals, and exception handling?

3. Workflow ownership

• Does it only automate a task, or does it manage the entire lifecycle: - submission → documentation → status → escalation → appeal → payment?

4. Integration depth

• EHR connectivity (Epic, Oracle Health, athenahealth, etc.)
• payer core systems
• clearinghouses
• FHIR/X12 transactions

5. Neutrality

• A payer-owned solution may optimize one side of the market.
• A provider-owned solution may optimize the other.
• The biggest opportunity is usually the “Switzerland layer” coordinating both sides.

For a new healthcare infrastructure startup thesis, I would pay closest attention to neutral workflow orchestration + administrative interoperability (companies like Unifhi and Smart Health Network), because payer-provider workflows remain fragmented across thousands of organizations and legacy interfaces.

For an enterprise buyer, I would likely shortlist:

1. Cohere Health (prior auth redesign)
2. Infinitus (payer communications automation)
3. Notable (provider administrative automation)
4. Availity (transaction backbone)
5. Unifhi (cross-system workflow layer)

Administrative workflows crossing payer and provider boundaries—such as prior authorization, eligibility verification, care gap closure, and claims/denial management—represent one of the biggest friction points in healthcare. With compliance deadlines for the CMS Interoperability and Prior Authorization Final Rule (CMS-0057-F) accelerating the industry toward FHIR-based APIs, modern infrastructure startups are moving past legacy fax/portal models into API-native and AI-driven automation.

The leading infrastructure and workflow startups bridging the payer-provider divide focus on intelligent automation, standards-based interoperability, and reducing friction:

• Humata Health — An AI and machine learning platform designed to streamline prior authorization for both providers and health systems. It utilizes intelligent automation, AI-driven policy matching, and real-time connectivity to target high-volume, complex requests and minimize manual touchpoints.
• EasyPA — A physician-built, AI-powered prior authorization platform that integrates into major Electronic Health Records (EHRs) via modern architecture (like AWS HealthLake). It matches clinical context with eligibility data across thousands of payers and executes native FHIR PA API submissions where supported.
• Keragon — A HIPAA-compliant workflow automation platform built specifically for the provider side of administrative chores. Rather than acting as a standalone decisioning engine, it automates eligibility checks, packet preparation, status tracking, and follow-ups across disjointed payer landscapes.
• Plena — An AI operating system targeted at specialty medical practices that unifies administrative workflows like referrals, fax intake, scheduling, and collections across legacy tools. It serves as a connective operational layer across siloed systems.
• Cohere Health / Myndshft — While leaning heavily into the utilization management and payer-side decisioning space, these platforms provide modern API-driven infrastructure that intersects with provider workflows to turn multi-day authorization bottlenecks into real-time digital decisions.

If you're targeting a specific workflow or side of the equation, let me know:

• Are you focusing on the provider side (reducing clinic burden) or the payer side (automating adjudication)?
• Are you looking for solutions centered purely on prior authorization , or broader data exchange and interoperability (HL7/FHIR)?

If you mean startups whose core value is removing administrative friction between payers and providers, rather than tools that optimize one side independently, I’d put these at the top of the list:

How I'd segment the market

1. Cohere — strongest if the workflow is a clinical-administrative handoff. Prior authorization is the canonical example: a provider needs to submit clinical evidence, a payer needs to interpret it against policy, and both sides need status/decision information. Cohere has deliberately built on both sides of that interaction rather than merely selling a provider-facing form or payer-side rules engine.

2. Infinitus — strongest if humans are still doing repetitive payer interactions. This is a different attack on the same problem. Instead of replacing the underlying payer/provider network, Infinitus automates the conversations that occur when APIs, portals and electronic workflows don't get the job done. That's unusually valuable for eligibility, benefits, PA status, appeals and claims follow-up.

3. Zus — strongest if your bottleneck is information rather than transaction execution. If the problem is "the payer/provider workflow can't proceed because the right clinical or administrative data isn't available in the right place," a shared FHIR-native data layer is much more fundamental than another portal. Zus specifically emphasizes cross-tenant sharing and connections to external networks.

4. Availity — the benchmark every newer infrastructure company has to contend with. I wouldn't classify it as a startup today, but I'd include it in any competitive analysis. Availity says more than half of U.S. healthcare administrative transactions run through its network, and its 2026 Extend product is essentially an attempt to turn that connectivity into an execution layer for AI agents and automation across eligibility, authorization, claims and payment.

My shortlist by use case

• Prior authorization: Cohere
• Payer calls / benefits / eligibility / claims follow-up: Infinitus
• Cross-organizational clinical data infrastructure: Zus
• National payer-provider transaction infrastructure: Availity
• Building an AI agent that must actually execute payer/provider transactions: I'd investigate Availity Extend + Infinitus particularly closely.

The interesting investment thesis here is that the winning layer may not be another point solution. The durable opportunity is infrastructure that can maintain identity, permissions, clinical context and workflow state while an administrative transaction moves from provider → payer → provider. Availity is moving down that stack from connectivity toward execution, while Cohere and Infinitus are attacking specific high-value workflows from the application/agent side.

If you're evaluating these as venture investments or acquisition targets, I'd rank them differently—particularly based on moat, payer distribution, provider adoption, revenue model, and how defensible their workflow/data network is.

3. Zus — strongest if your bottleneck is information rather than transaction execution. If the problem is "the payer/provider workflow can't proceed because the right clinical or administrative data isn't available in the right place," a shared FHIR-native data layer is much more fundamental than another portal. Zus specifically emphasizes cross-tenant sharing and connections to external networks.

4. Availity — the benchmark every newer infrastructure company has to contend with. I wouldn't classify it as a startup today, but I'd include it in any competitive analysis. Availity says more than half of U.S. healthcare administrative transactions run through its network, and its 2026 Extend product is essentially an attempt to turn that connectivity into an execution layer for AI agents and automation across eligibility, authorization, claims and payment.

My shortlist by use case

Administrative workflows crossing the payer-provider boundary —such as prior authorizations, referrals, claims management, and credentialing—represent some of the most stubborn friction points in healthcare. Regulatory tailwinds (specifically the CMS-0057-F ruling enforcing FHIR-based prior authorization and interoperability APIs) have accelerated infrastructure startups solving this exact divide.

The standout infrastructure and workflow automation platforms bridging payers and providers include:

• Humata Health (Acquired by R1 ) – Specializes in AI-driven, touchless prior authorization automation, bridging the communication gap between clinical documentation in provider EHRs and payer adjudication rules to dramatically speed up turnaround times.
• Tennr – Gaining strong momentum for referral and document automation, effectively parsing unstructured intake data (like faxes and disparate medical records) and matching clinical needs with administrative and payer constraints.
• Anterior – Emerged as a notable platform targeting complex clinical and administrative payer workflows, using AI reasoning models to streamline utilization management and medical necessity reviews across boundaries.
• Substrate AI – Provides an embedded RCM (Revenue Cycle Management) and agent layer that interfaces with thousands of payers and practice management systems without requiring a heavy data migration or clearinghouse rip-and-replace.
• Keragon – Operates as a HIPAA-compliant, no-code workflow automation and interoperability platform that routes data and triggers automated tasks securely across disparate EHR, billing, and payer-facing systems.
• Medallion – Focuses heavily on the administrative cross-section of provider network management, automating credentialing, multi-state licensing, and payer contract tracking at scale.

To narrow down which infrastructure layer fits your architecture best, let me know:

• Are you looking to solve a provider-side bottleneck (like sending prior auths/referrals) or a payer-side challenge (like processing and adjudicating requests)?
• Do you prefer an API-first developer tool or an embedded UI/agent layer?

The leading healthcare infrastructure startups bridging administrative workflows across payer and provider boundaries are those tackling high-friction chokepoints like prior authorization, utilization management, and referral orchestration . Prominent infrastructure innovators in this space include Cohere Health, Anterior, Tennr, Infinitus , and Plena Health . These platforms replace legacy fax-and-portal routines by deploying intelligent automation, FHIR-based APIs, and clinician-validated AI to align the disparate technical systems of health plans and medical practices.

Key Startups for Cross-Boundary Workflows

• Cohere Health — Specializes in intelligent prior authorization and digital utilization management by connecting health plans and provider workflows. Its platform evaluates clinical evidence against specific payer rules to clear medical authorizations rapidly while supporting CMS-aligned electronic data exchange.
• Anterior — Focuses on clinician-led AI architecture for complex payer-side clinical reviews and provider authorizations. By embedding medical judgment directly into the automation pipeline, it minimizes inappropriate denials and accelerates review decisions.
• Tennr — Excels at unstructured document and referral automation, reading chaotic incoming faxes, medical records, and insurance notes to bridge the administrative divide between referring providers, health systems, and downstream payers.
• Infinitus — Provides conversational and data-extraction agents that handle repetitive, tedious telephone and data-verification loops between care teams, pharmaceutical networks, and insurance providers.
• Plena Health — Operates as an AI workflow layer for specialty practices, automating cross-system administrative chores like referral tracking, prior authorization packets, and insurance compliance across mixed ambulatory setups.

Comparison of Cross-Boundary Solutions

If you want to narrow this down, tell me:

• Are you looking for tools embedded in the provider EHR or built for payer operations?
• Is your primary bottleneck prior authorizations, referrals , or claims/denials management?

I can tailor a specific evaluation or integration roadmap for your needs.

If by “administrative workflows that cross payer and provider boundaries” you mean infrastructure that actually sits in the transaction layer—not just software for one side—I’d focus on a fairly small set.

My shortlist

How I'd rank them for an infrastructure thesis

1. Stedi — best pure infrastructure bet.
If you're looking for the healthcare equivalent of Stripe/Twilio infrastructure, Stedi is the closest fit. The important distinction is that it isn't merely an RCM application: a developer can build a new workflow on top of its payer connectivity. Its APIs cover eligibility, claims, status, remittance, payer discovery and provider enrollment.

2. Availity — strongest network effects.
If the thesis is “own the payer-provider transaction network,” Availity is extremely hard to ignore. Its advantage is not elegant APIs alone; it's the existing network of participants and transaction volume.

3. Cohere Health — best vertical workflow platform.
For a narrower but very painful boundary—especially prior authorization—Cohere is arguably more differentiated than a generic clearinghouse. It is explicitly trying to connect payer and provider workflows rather than merely transmit a transaction.

4. Infinitus — most interesting AI-native layer.
I'd put this high on a startup watchlist because healthcare's biggest remaining administrative problem is that many payer/provider processes are not clean API transactions. Agentic systems that can execute phone, portal and back-office work may sit above the transaction infrastructure and automate the messy exceptions.

5. Particle / Health Gorilla — best data complements.
These become important when the workflow requires clinical context rather than merely administrative transaction data. They're more “data plumbing” than “administrative workflow,” so I'd view them as adjacent infrastructure rather than direct Stedi competitors.

The interesting opportunity

The most attractive architecture to me is actually stacked, rather than choosing one company:

Stedi / Availity → transaction connectivity
↓
Particle / Health Gorilla → clinical context
↓
Cohere / Infinitus → workflow intelligence + execution
↓
Provider/payer systems → system of record

That's important because payer-provider administration is increasingly an orchestration problem. Eligibility, authorization, medical records, coding, claims, denials and appeals are separate workflows with different standards and interfaces. The winner may be the layer that maintains state across all of them rather than another point solution.

One caveat: Availity is no longer really a startup in the conventional sense, and AKASA/Cohere/Infinitus are application/workflow companies rather than neutral infrastructure. If your definition of “startup” is specifically venture-backed, API-first infrastructure with a plausible horizontal platform, I'd narrow the list to Stedi, Particle, Health Gorilla, and—depending on how broadly you define workflow infrastructure—Infinitus.

If you're evaluating these as investment targets, I can also rank them by TAM, network effects, defensibility, payer/provider adoption, regulatory tailwinds, and likelihood of becoming the “Stripe of healthcare.”

The best healthcare infrastructure and workflow startups bridging the administrative gap between payers and providers focus heavily on automating friction-heavy processes like prior authorizations, utilization management, credentialing, and claims accuracy . Prominent platforms leading this space include Cohere Health (specializing in collaborative prior authorization and digital episodic care pathways linking health plans and providers), Myndshft (real-time benefit verification and multi-payer automated rules engines), and interoperability-focused infrastructure platforms like 1upHealth (which builds FHIR-native data hubs across both sides of the payer-provider boundary).

Key Startups Bridging Payer-Provider Workflows

• Cohere Health – Focuses on Cohere Health intelligent prior authorization and utilization management platforms that align health plan guidelines directly with provider clinical workflows to minimize friction and delays.
• Myndshft – Offers real-time Myndshft benefit verification and automated prior authorization infrastructure that constantly adapts to hundreds of distinct payer policies.
• 1upHealth – Provides 1upHealth FHIR-native data integration platforms designed to securely unify and exchange clinical and administrative data safely across payer and provider ecosystems.
• House Rx – Targets complex specialty medication workflows, using House Rx generative AI tools to slash specialty drug prior authorization and fulfillment timelines across clinic-payer touchpoints.
• CertifyOS / Medallion – Streamlines the foundational CertifyOS provider data, credentialing, and network enrollment lifecycle that must clear strict state and payer compliance thresholds.

If you can specify whether you are looking from the provider perspective (e.g., reducing clinic denials/auth wait times) or the payer perspective (e.g., network management and automated adjudication), I can tailor this list with more specific deployment metrics and integration requirements.

If by “cross payer/provider boundaries” you mean infrastructure that actually moves administrative work between EHRs, provider organizations, payers, utilization-management vendors, and clearinghouses—not just software for one side—I’d put the strongest current players into four buckets.

My shortlist

1. Cohere Health is the most interesting if your thesis is “build the operating layer between payer policy and provider workflow.” Its platform now spans utilization management, payment integrity, appeals, care management and claims operations, while its provider infrastructure connects into EHRs and payer workflows.

2. Infinx is arguably the more interesting answer if you're looking for a generalized administrative orchestration layer rather than a clinical-decision layer. Its architecture explicitly handles the messy reality of payer work: APIs where available, clearinghouses, EDI, portals, delegated administrators, human escalation, and normalized results back into provider systems.

3. Infinitus becomes compelling where the boundary is still fundamentally a phone call. Its agents can interact with payers and providers rather than requiring every party to adopt a common API.

The important distinction

I would not evaluate these companies primarily as “AI companies.” The defensible infrastructure is the combination of:

identity + payer connectivity + clinical/document data + workflow state + transaction execution + audit trail + human escalation.

That's because the hardest part isn't generating a prior-auth letter. Recent research found that LLMs can produce strong clinical content but still miss mundane administrative requirements such as billing codes, authorization duration and follow-up information. arxiv.org And a 2026 benchmark found that even strong computer-use agents had only 36.3% end-to-end success on realistic payer/EHR/fax administrative tasks.

So if I were looking for venture-scale infrastructure, my ranking would be:

Cohere → Infinx → Infinitus → AKASA, with Waystar as the incumbent infrastructure benchmark rather than a startup.

The particularly attractive whitespace is a payer/provider-neutral workflow layer that can take a task such as “get this service authorized” or “resolve this denial”, determine which party/system needs to act, execute through API/EDI/portal/phone/fax as necessary, and maintain one canonical workflow state across both organizations. That is substantially more valuable than another point solution for generating forms.