Machinify vs Zelis
Two Payment Integrity & Underpayments vendors, side by side. Facts from public sources; judgments are ours.
At a glance
Derived from public facts · a rough scale, not a ranking
| Machinify | Zelis | |
|---|---|---|
| Pricing model | Contingency (pay from recoveries) · contingency and blended fee models | Per-transaction / per-chart · Fees on provider payments; payer deals custom |
| Speed to go live | deep payer claims data integration | Provider enrollment quick; payer integrations larger |
| Automation model | Software platform · AI payment integrity plus services | Data / network utility · payments and pricing network, 550+ payers |
| Built for | Payers | Payers, Small practices, Mid-size groups, Enterprise systems |
| Security posture | HITRUST, SOC 2 Type II | HITRUST, HIPAA, PCI DSS |
| Company maturity | 10 yrs (est. 2016) | 10 yrs (est. 2016) |
| Financial backing | Private equity owned (New Mountain Capital) | Private equity owned (Bain Capital, Parthenon Capital) |
| Named customers | None public | None public |
| Published results | Specific numbers public | Specific numbers public |
| Documented integrations | None documented | None documented |
| Third-party validation | None found | None found |
Bottom line
- Pick Machinify if you are a health plan moving payment integrity from post-pay recovery vendors to AI-driven pre-pay accuracy.
- Pick Zelis if you are a payer modernizing claims pricing and payments, or a provider consolidating electronic payments and remittances from many plans.
Machinify
AI payment integrity and accuracy platform for health plans
- Founded
- 2016
- HQ
- Palo Alto, CA
- Stage
- Private equity owned (New Mountain Capital)
- Raised
- n/a
What it does
- AI-driven claims auditing and payment accuracy
- Clinical chart and DRG validation
- Itemized bill review
- Subrogation and coordination of benefits recovery
- Prepay and postpay claim analytics
Where it's strong
- Scale few rivals match: more than 2,000 employees serving over 60 health plans, including 13 of the top 20 payers.
- Combines Machinify's AI software with decades of recovery and audit operations from Rawlings, Apixio PI, and VARIS.
- New Mountain Capital backing and a $5B combined valuation signal long-term investment in the platform.
What buyers should weigh
- Integrating four companies merged in 2024 and 2025 carries execution risk while systems and teams consolidate.
- Built for payers, so it is not a fit for provider organizations shopping for revenue tools.
- Payment integrity vendors are typically paid on recoveries, so incentives should be reviewed carefully during contracting.
Zelis
Claims pricing, payment integrity, and payments for payers
- Founded
- 2016
- HQ
- Boston, MA
- Stage
- Private equity owned (Bain Capital, Parthenon Capital)
- Raised
- n/a
What it does
- Prepayment claims editing and payment integrity reviews
- Out-of-network pricing and network analytics
- Electronic provider payments replacing paper checks
- Member payments and explanation-of-benefits communications
- Claim payment and denial analytics for providers (Rivet)
Where it's strong
- Scale is real: 750+ payers including the top five national plans, so pricing and integrity models draw on enormous claim volume.
- One vendor covers pricing, integrity, and payment rails, which cuts the number of point solutions a plan has to stitch together.
- Well capitalized and acquisitive, with a valuation reported around $17B, so vendor viability risk is low.
What buyers should weigh
- Built for payers first; providers often encounter Zelis as the counterparty taking fees out of their payments rather than as their vendor.
- Its size and PE ownership can mean slower, more contractual engagement than younger vendors offer.
- Pricing and savings-share models deserve close scrutiny since fees often come out of claim savings.
Compare against the rest of Payment Integrity & Underpayments
Deciding between these two?
First Pass tracks Payment Integrity & Underpayments every week: funding, launches, and what changed since this page was written.