Cohere Health
AI platform that runs prior authorization decisions for health insurers.
On the record
Checkpoint: Outcome of WISeR program funding after House defund vote and pending Senate action
The call
Cohere Health sits between shipped clinical AI infrastructure and live legal and political fights over how AI denials get used against patients.
Cohere Health built software that helps health insurance companies decide faster whether to approve patient treatments, using artificial intelligence trained on millions of past decisions. The company is hard to replace right now because it has deep relationships with insurance companies, special knowledge from handling so many decisions, and legal risks that scare away bigger competitors like UnitedHealth and frontier AI labs. However, the picture could flip if Congress defunds the government program that pushes insurance companies to use AI tools like Cohere's, or if courts rule that AI-based approval decisions are unfair to patients, both of which are actively being fought over in Washington and the courts.
Why
01
AI pressure: Generic LLMs built into Epic or payer core systems. Frontier labs avoid direct PA decisioning due to liability exposure, but AI-denial lawsuits could reshape the whole category Cohere sells into. Could AI do the core job? Unlikely.
02
Bigger players: UnitedHealth/Optum (nH Predict). Optum's own PA tool is barred from wide use by health plans due to conflict of interest, leaving room for independent vendors like Cohere. Could a giant copy it? No, they are blocked.
03
What protects it. Deep payer integrations, 12M+ annual PA decisions feeding proprietary training data, and regulatory barriers that block quick entry.
What would change this call
WISeR program's final funding status is resolved by Congress or CMS. Confirms whether Cohere's federal-model revenue channel survives or is cut.
Discovery orders or rulings emerge in Adams v. Cohere Health. Shows whether courts hold AI-PA vendors liable for denials, raising legal exposure.
Cohere announces a new funding round or valuation update. Signals investor confidence given last raise was May 2025.
Discovery orders or rulings emerge in Adams v. Cohere Health. Shows whether courts hold AI-PA vendors liable for denials, raising legal exposure.
Cohere announces a new funding round or valuation update. Signals investor confidence given last raise was May 2025.
Key numbers
- 12M+ prior-auth requests processed yearly
- $90M Series C led by Temasek
- ~$184M-$189M annualized revenue estimate
Named risks
- WISeR federal contract could be defunded after House amendment passed June 2026.
- Adams v. Cohere Health litigation could set vendor liability precedent for AI denials.
- Undifferentiated position among five other CMS-selected WISeR peer vendors.
- Broader AI-denial litigation wave (e.g. UnitedHealth/nH Predict) may expand discovery exposure.
- Financial figures rely on third-party broker estimates rather than disclosed statements.
Rivals, as read in July 2026
| Rival | Direction | Evidence |
|---|---|---|
| UnitedHealth/Optum (nH Predict) | contesting | Channel conflict structurally blocks Optum from selling UM to rival payers, as of 2026 |
| Myndshft | contesting | PE-backed direct PA competitor, fellow CMS WISeR vendor as of Nov 2025 |
| Humata Health, Genzeon, Innovaccer, Virtix Health, Zyter | contesting | Five peer vendors selected alongside Cohere for WISeR pilot, Nov 2025 |
| Generic LLM platforms embedded in Epic/payer systems | gaining on | General-purpose models show 20.7% error rate vs Cohere's 3.5% on PA drafting, July 2026 |
Questions people ask
- Is Cohere Health profitable?
- No profitability figures have been disclosed. Cohere Health is a private, venture-backed company that raised a $90M Series C led by Temasek in May 2025, bringing total funding to roughly $196M-$200M as of May 2025; no public profit/loss data exists.
- Who owns Cohere Health?
- Cohere Health is privately held with no parent company. It is venture-backed, with its May 2025 $90M Series C led by Temasek, joined by Deerfield Management, Define Ventures, Flare Capital Partners, Longitude Capital, and Polaris Partners.
- Could AI replace Cohere Health's prior authorization business?
- Cohere Health itself sells AI that replaces manual prior-authorization review, processing over 12 million requests a year with up to 90% auto-approval (as of Nov 2025). Its risk is generic LLMs embedded in EHRs, but regulatory liability barriers currently limit that threat.
- Is UnitedHealth/Optum Cohere Health's biggest competitor?
- Optum's nH Predict tool is an adjacent AI utilization-management product, but UnitedHealth is structurally blocked from selling it to rival payers due to channel conflict. Cohere Health instead competes directly with five other CMS WISeR vendors named in November 2025.
- What is the WISeR program and why does it matter for Cohere Health?
- WISeR is a CMS Medicare AI prior-authorization pilot effective January 1, 2026, that selected Cohere Health as one of six vendors. A Senate repeal effort failed 46-50 on July 16, 2026, but a House defund amendment passed in June 2026, leaving its fate unresolved.
- Has Cohere Health been sued over AI-driven denials?
- Yes. Cohere Health is a named defendant in Adams v. Cohere Health Inc. et al., removed to federal court in Alabama on June 30, 2026, part of a broader wave of AI-denial litigation that also targets UnitedHealth's nH Predict tool.
Timeline
- 2026-07-16Senate vote to repeal WISeR Medicare AI prior-auth pilot fails 46-50
- 2026-06-30Adams v. Cohere Health Inc. et al. removed to federal court in Alabama
- 2026-06-01House Appropriations amendment to defund WISeR passes by voice vote
- 2025-11-20Cohere Health ranks No. 218 on Deloitte Technology Fast 500
- 2025-11-12Selected as one of six vendors for CMS WISeR Model, effective Jan 1, 2026
- 2025-09-09Acquires ZignaAI, launches Payment Integrity Suite (Cohere Validate)
- 2025-05-14Closes $90M Series C led by Temasek
- 2024-01-01Closes $50M Series B round led by Deerfield Management
- 2019-08-01Founded in Boston by Siva Namasivayam and colleagues
Revision history
22 July 2026
First assessed. Protection under test. The text above is fixed as of this date and is not edited afterwards.
In the same band
Sources
- A Startup Finds its Footing During the Pandemic (2021-05-03)
- Cohere Health Secures $90M Series C (2025-05-14)
- Growth Strategy of Cohere Health (2026-03-20)
- Cohere Health Stock Price, Funding, Valuation, Revenue & Financial Statements (2025-09-08)
- Cohere Health Brings Pre-Care Insights and Clinical AI to Health Plan Payment Integrity (2025-09-09)
- Cohere Health - Overview, News & Similar companies (2026-07-13)
- Meet the 6 vendors participating in the CMS WISeR Model (2025-11-12)
- Cohere Health: AI in Prior Authorization & Company Profile (2026-03-08)
- Cohere Health Ranks No. 218 on Deloitte Fast 500 (2025-11-20)
- Target Market of Cohere Health (2026-03-18)
- Cohere Health Number of Employees 2026 (2026-06-29)
- Cohere Health - Headcount, Funding & Open Jobs (2026-07-08)