H1 Acquires Defacto Health to Expand Provider Network Intelligence and Healthcare Data Assets

H1 has acquired Defacto Health, a healthcare data company focused on provider network intelligence, as part of an effort to expand its offerings for health plans and strengthen its healthcare data assets. The transaction included a combination of cash and stock, although financial terms were not disclosed.

H1 is an AI-powered platform that combines healthcare data, domain expertise, and artificial intelligence tools for life sciences organizations. The company’s platform is designed to help identify and engage physicians for workflows across pharmaceutical companies, health plans, health systems and technology firms.

Acquisition Builds on Existing Relationship Between the Companies

According to H1 co-founder and Chief Executive Officer Ariel Katz, the acquisition extends a longstanding partnership between the two companies. Defacto Health will operate as part of H1, and its co-founders, Ron Urwongse and Tarun J. Theogaraj, will join the organization.

The acquisition adds a long-term H1 data partner to the company and expands its investment in healthcare data used by customers to evaluate providers, healthcare networks and access to care. Defacto specializes in provider intelligence and aggregates information from health insurance payer networks, provider directories, and medical demographics datasets. The company maintains information on healthcare providers, payer networks and the insurance plans accepted by providers, enabling health plans to evaluate directory accuracy, identify error patterns and compare network performance.

“This acquisition sticks to the mission of connecting the world to the right doctor,” Katz said.

Third Acquisition in Two Years Expands Data Capabilities

The Defacto transaction represents H1’s third acquisition in the past two years. Earlier in 2025, the company acquired provider data management software firm Ribbon Health to expand its presence across health plans, provider systems and digital health markets. Later that year, H1 acquired Veda Data Solutions to enhance provider data and automation offerings for payers.

Katz said demand for H1’s physician intelligence products remains strong and that accurate provider information is important for AI companies and large healthcare organizations, including CVS Health. H1 states that it maintains one of the most comprehensive global datasets of healthcare professionals and combines healthcare data with agentic AI workflows supporting drug development, medical and commercial engagement, care navigation, provider data management and network intelligence.

The company also reports that 85% of the top 20 pharmaceutical companies and nine of the top 10 health plans are customers.

Focus on Insurance Network Accuracy and Provider Directories

Katz said insurance acceptance information has been a major area of inquiry from patients using provider directories. He noted that many support requests involve questions about whether specific providers or services accept a patient’s insurance coverage.

The Centers for Medicare and Medicaid Services is cracking down on inaccurate or inactive provider listings, referred to as “ghost networks” in the source material. Last September, the agency issued a final rule requiring Medicare Advantage organizations to attest to the accuracy of provider directory information submitted to CMS for online publication.

Urwongse said provider and payer information is both complex and constantly changing, while also serving as a foundation for healthcare decision-making. He stated that Defacto was created to improve the accuracy, accessibility, and usefulness of provider network information and that joining H1 would allow the team to continue investing in those efforts within a larger healthcare intelligence platform.

Broader AI Initiatives Across Healthcare and Clinical Research

In May, CVS Health Ventures participated in a $40 million investment in H1 following collaborations between the two organizations. H1 and CVS are working on a strategic AI roadmap that includes development of an AI model intended to improve CVS Health’s healthcare provider directory.

Katz also said H1 is increasingly supporting AI-powered provider search experiences as consumers use AI-based chatbots to locate healthcare providers. The company is also working with life sciences organizations on AI-enabled clinical trial development.

H1 recently partnered with Novo Nordisk to develop AI-driven clinical trial workflows and data. Under that work, H1 is helping support activities such as clinical trial design, protocol development, site and physician selection, country selection, budget forecasting, and timeline planning. As part of the broader relationship, H1 will also acquire rights to further develop StudyHub, a digital and AI-enabled clinical development platform built by Novo Nordisk.

Defacto Health has been acquired by H1 as the healthcare intelligence company expands its provider network capabilities and strengthens its healthcare data assets. Announced on September 9, 2026, the acquisition brings Defacto Health’s specialized provider-network intelligence and experienced healthcare data leadership into H1.

Defacto Health focuses on payer networks, healthcare providers, and the insurance plans accepted by providers. Its data helps health plans evaluate provider-directory accuracy, identify clusters of incorrect information, and benchmark their networks. By bringing these capabilities in-house, H1 aims to create a more connected view of providers, networks, and access to care.

Defacto Health Adds Valuable Provider Network Intelligence

The acquisition gives H1 access to Defacto Health’s provider-network data and expertise. Provider information changes frequently as physicians change practices, facilities update affiliations, and insurance participation evolves. Maintaining accurate information is therefore an important challenge for health plans and healthcare technology companies.