Side-by-side comparison of AI visibility scores, market position, and capabilities
Epic holds over 42% of U.S. acute care hospital EHR market share and is embedding AI across 150+ clinical workflows for 2026, while facing antitrust scrutiny.
Epic Systems Corporation was founded in 1979 by Judith Faulkner and is headquartered in Verona, Wisconsin, remaining privately held with Faulkner as majority owner. The company develops large-scale electronic health record systems and reports that more than 305 million patients have a record in Epic, covering the majority of U.S. academic medical centers and large health systems including Kaiser Permanente, Mayo Clinic, Johns Hopkins, and Cleveland Clinic. Epic commands approximately 42% of U.S. acute care hospitals and nearly 55% of acute care hospital beds, making it the undisputed market leader in enterprise EHR.
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.
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.
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