Duet Raises $15M Series A to Scale Nurse Practitioner-Owned Clinics

Duet has raised $15 million in Series A funding led by Kairos, with Lerer Hippeau participating, bringing total funding for the nurse practitioner-focused healthcare platform to $22.5 million. The company, which supports what it describes as the largest network of independently owned nurse practitioner primary care practices in the U.S., will use the capital to expand nationally, build AI-powered operational tools, and deepen value-based care partnerships with insurers.

The numbers behind the network are already substantial. Duet supports more than 130 clinics across 21 states, serving roughly 150,000 patients and delivering approximately 400,000 patient visits per year — the equivalent of a mid-sized hospital system's outpatient volume. The company manages about $100 million in total patient healthcare spending through its insurer arrangements, and in some contracts it assumes financial risk on patient care costs.

What does this change for independent practices?

The core problem Duet targets is administrative. Running a clinic means insurance credentialing, billing, payer contracting, compliance, scheduling and documentation — burdens that hit nurse practitioner-owned practices harder because reimbursement arrangements often pay them less than physicians for comparable services. Duet centralizes those functions while the clinicians keep ownership.

The financial upside, by the company's own reporting, is real: nurse practitioners operating under Duet's alternative reimbursement contracts have earned 25% to 50% more revenue by hitting quality and cost targets. In New Hampshire, Duet's anchor market, its network outperformed peers on total cost of care by 19%, generating shared savings. The company notes these results are self-reported and may vary across practices.

The clinical results the company disclosed point in the same direction. Preventive screenings for breast cancer and colorectal cancer rose 30% among practices joining the network. Emergency room visits fell 20%. Roughly a quarter of patients who had dropped out of routine care returned through Duet's outreach efforts. Patients noticed: Duet reported a Net Promoter Score of 92, against a typical healthcare industry range of 40 to 70.

AI as the operational engine

Duet's technology leans on AI to reduce the paperwork load. Its platform flags patients who have fallen out of regular care and prompts them to schedule appointments, surfaces clinical considerations before visits so care teams can prioritize, and automates portions of billing, credentialing and insurance contracting workflows. The premise is straightforward: less time on administration means more time on patient care and prevention.

On the payer side, Duet negotiates with insurers on behalf of its network, giving small independent clinics access to value-based contracts they'd struggle to win alone. It has already signed relationships with four national insurers: Anthem, Cigna, Centene and Molina.

A nurse practitioner-led Medicare ACO in 2027

The most forward-looking piece of the plan is a Medicare Accountable Care Organization that Duet says will be the first led by nurse practitioners, launching in 2027. An ACO coordinates care across providers and can capture a share of the savings generated under Medicare's shared savings programs. Duet's version would be designed and governed by nurse practitioners, with the company providing technology and operational support while practices keep their independence.

For context on why this matters: Duet estimates more than 100 million Americans lack adequate access to primary care, and nurse practitioners increasingly fill that gap, particularly in rural and underserved communities where physician availability is thin.

What the investors are saying

Duet founder and CEO Jonathan Goldberg framed the shift in ownership terms: "Nurse practitioners already deliver a big share of primary care, and their patients trust them. But more than 100 million Americans still lack access to primary care and too many preventable problems go unaddressed." He added: "They're going from being a workforce to being owners and we're proud to support that."

Alex Fiance, co-founder and co-CEO at lead investor Kairos, called Duet "one of those rare businesses where everybody wins" and said the firm believes the company "has the potential to reshape care across the country in a highly scalable way."

Beyond clinic growth, the new capital will fund an expanded engineering team, stronger automation for clinical and administrative operations, and preparation for the 2027 ACO launch. If that ACO works as designed, independent nurse practitioners would move from peripheral participants to direct beneficiaries of Medicare's value-based care system — the clearest signal yet of where Duet thinks primary care ownership is heading.