eClinicalWorks vs athenahealth
Side-by-side comparison of AI visibility scores, market position, and capabilities
Major ambulatory EHR serving 150K providers bootstrapped to scale; Sunoh.ai ambient clinical documentation and revenue cycle management competing with Epic and athenahealth for practices.
About
eClinicalWorks is one of the largest electronic health record (EHR) and practice management software providers in the United States, serving approximately 150,000 providers across 850,000 care sites with ambulatory EHR, revenue cycle management, patient engagement, and population health tools. Founded in 1999 by Girish Navani and headquartered in Westborough, Massachusetts, eClinicalWorks is privately held and is notable for being a bootstrapped company that has grown to significant scale without venture capital funding, generating substantial annual revenue from its large installed physician base.\n\neClinicalWorks' platform covers the ambulatory (outpatient) clinical workflow: clinical documentation with specialty-specific templates, order entry for labs and imaging, e-prescribing, chronic disease management registries, telehealth (healow TeleVisits), and patient portal. The revenue cycle management capabilities handle insurance claims submission, denial management, and patient billing. Population health tools enable practices and health systems to identify at-risk patient populations and coordinate care across attributed patients.\n\nIn 2025, eClinicalWorks competes with Epic (the dominant health system EHR), athenahealth (cloud-native ambulatory EHR), Oracle Health (Cerner), and Modernizing Medicine for physician practice EHR market share. The company has faced regulatory challenges — in 2017, eClinicalWorks paid $155 million to settle Department of Justice charges related to EHR certification fraud. Despite this, the company retained most of its customer base due to high switching costs inherent in EHR changes. The 2025 strategy focuses on its AI assistant Sunoh.ai (ambient clinical documentation that automatically generates SOAP notes from recorded patient visits), expanding telehealth capabilities, and growing the healow patient engagement platform.
$1.7B annual revenue; 160K+ providers, 117M patients; 18.15% EHR market share; 6,713+ companies using 2025; acquired by Bain Capital & Hellman & Friedman Nov 2021 at $17B; AI interoperability 2025
About
athenahealth is a cloud-based electronic health records (EHR), medical billing, and practice management company founded in 1997 and headquartered in Watertown, Massachusetts. The company was built on the principle that healthcare administration should be managed as a service — with athenahealth absorbing the complexity of payer rule updates, regulatory compliance, and billing workflows so that physicians and clinical staff can focus entirely on patient care. Its cloud-native architecture, deployed before most EHR competitors moved to the cloud, remains a core technical differentiator.\n\nathenahealth's platform — athenaOne — integrates EHR, revenue cycle management, patient engagement, and care coordination in a single system used by over 160,000 providers across 117 million patient records. The company serves ambulatory practices ranging from solo physicians to large health systems and medical groups. Its continuously updated rules engine processes millions of payer transactions daily, enabling higher clean claim rates and faster reimbursement compared to on-premise EHR alternatives. athenahealth holds an 18.15% share of the US ambulatory EHR market.\n\nathenahealth is currently owned by a private equity consortium of Bain Capital and Hellman & Friedman, which acquired the company in 2019 for $5.7 billion. Annual revenue stands at approximately $1.7 billion. The company competes with Epic, eClinicalWorks, and Oracle Health in the ambulatory EHR market. Its managed-service model, shared payer network data, and cloud-native infrastructure continue to make it a compelling choice for ambulatory providers who prioritize revenue cycle performance and reduced administrative burden.
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