Products

Isabel Differential Diagnosis Generator
Isabel Healthcare
Clinical Decision Support & Reference
Isabel DDx Companion is an AI-powered diagnostic support tool that generates a list of possible diagnoses based on patient symptoms, aiding clinicians in critical thinking and expanding their differential.

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About Isabel Healthcare

Isabel Healthcare is a pioneering healthcare AI company that provides advanced diagnostic decision support tools for medical professionals worldwide. Its flagship product, the Isabel DDx Companion, is a powerful differential diagnosis generator designed to assist clinicians in expanding their diagnostic considerations and reducing the risk of misdiagnosis. By inputting a patient’s clinical features, including signs, symptoms, lab results, and comorbidities, the system rapidly generates a comprehensive list of potential diagnoses, flagging critical “don’t miss” conditions.

The platform leverages innovative statistical natural language processing and machine learning, continuously developed and validated over nearly two decades, to cover over 10,000 conditions across all ages and specialties. Isabel can be used as a standalone application or seamlessly integrated into Electronic Health Record (EHR) systems, streamlining workflow and providing evidence-based content from partners like DynaMed and BMJ Best Practice. Beyond diagnosis, Isabel also offers tools for clinical education (Isabel Clinical Educator) to enhance reasoning skills and a patient-facing symptom checker (Isabel Symptom Checker) to empower patients with health information.

Focus Areas

Differential Diagnosis Clinical Decision Support Symptom Checker Patient Self-Triage Clinical Education AI-powered solutions

Business Intelligence

Key InvestorsInnovate UK (Grant)
PartnershipsCooper Health AI (Feb 2024), South Florida PBS Health Channel (Feb 2024), HealthBook+ (July 2023), SigmaMD (Aug 2023), Orbita (March 2023), Riverwood Healthcare (March 2022), iCliniq
TechnologyCloud-native, AI-powered machine learning, API integration, EMR integration

What Physicians Need to Know

Differential Diagnosis (DDx Companion)
Isabel Healthcare's DDx Companion is a leading tool that generates a comprehensive list of relevant diseases from minimal clinical features in under a minute. It covers over 10,000 conditions across all ages and specialties, boasting a 96% accuracy rate in suggesting the correct diagnosis within the top ten.
Clinical Decision Support
The platform aids clinicians in broadening their differential diagnoses, gaining reassurance in their decision-making, and improving overall diagnosis quality. It helps reduce clinical risk and supports medical education, often integrating directly into existing EHR/EMR workflows.
Symptom Checker & Patient Self-Triage (Self-Triage)
Isabel's Self-Triage tool converts patient symptoms into actionable triage advice, asking only 11 standard questions to provide guidance in under a minute. It achieves a high completion rate (97%) and low drop-off rate (<5%), recognizing an almost infinite range of symptoms through natural language processing, and covers over 6,000 conditions.
Clinical Education (Clinical Educator)
The Isabel Clinical Educator is a case-based virtual learning platform designed to teach and assess clinical reasoning and diagnostic skills for students and healthcare professionals at all levels. It combines reflective case-based learning with Isabel's core diagnostic technology.
AI-Powered Solutions
Pioneering the use of machine learning for differential diagnosis since 1999, Isabel Healthcare leverages advanced Natural Language Processing (NLP) and statistical natural language processing software. They have recently integrated ChatGPT into their DDx Companion to provide enhanced explanations and comparisons, further supporting clinical reasoning.
Physician Tip

For physicians, Isabel Healthcare's tools serve as a crucial safety net, helping to broaden differential diagnoses and ensure 'don't miss' conditions are considered, thereby reducing diagnostic errors like premature closure. The system's speed and ability to process natural language input save valuable time by quickly generating relevant diagnostic possibilities and linking to evidence-based content. It's designed to stimulate critical thinking and enhance clinical reasoning, rather than replace a clinician's judgment, providing reassurance, especially in complex or atypical cases. Furthermore, its seamless integration into existing EMR workflows ensures minimal disruption to practice. For teaching hospitals and medical educators, the Clinical Educator platform offers a robust tool for developing diagnostic skills in learners.

Isabel Healthcare offers a comprehensive, headless API, available since 2010, for full white-label integration of its DDx Companion and Self-Triage functionalities into various platforms, including EMR/EHR systems, patient portals, and chatbots. It supports multiple integration methods such as query string, HL-7, XML, and direct API calls, and has successfully interfaced with major EMR systems like Cerner, Epic, NextGen, Allscripts Sunrise, and GE Centricity. The API allows for bi-directional integration, enabling patient information to flow to Isabel automatically and selected diagnoses to be sent back to the patient record. Isabel also partners with other digital health platforms and integrates with resources like DynaMed for evidence-based clinical information.

Products by Isabel Healthcare

1 product in the directory

Isabel Differential Diagnosis Generator
Isabel Healthcare
Clinical Decision Support & Reference
Isabel DDx Companion is an AI-powered diagnostic support tool that generates a list of possible diagnoses based on patient symptoms, aiding clinicians in critical thinking and expanding their differential.

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Press & Coverage

Isabel Healthcare Press Releases / PRNewswire
South Florida PBS Health Channel Partners with Isabel Healthcare to Revolutionize Ask Hanna Health Advisory Service with AI Integration
South Florida PBS Health Channel has partnered with Isabel Healthcare to enhance its Ask Hanna health advisory service with AI integration, aiming to empower individuals in managing their health through innovative technology.
2024-02
Isabel Healthcare Blog
Isabel DDx Companion with ChatGPT Integration - to help you diagnose even faster
Isabel Healthcare announced the integration of ChatGPT with its DDx Companion, aiming to make clinical reasoning faster, smarter, and safer for clinicians.
2025-10
Journal of Medical Internet Research
Computerized diagnostic decision support systemsu2014Isabel Pro versus ChatGPT-4 part II
This study compares Isabel Pro, a diagnostic decision support system, with ChatGPT-4, finding that combining both improved diagnostic accuracy and recall.
2025-06
Orphanet Journal of Rare Diseases
Cracking the code: a head-to-head comparison of expert clinicians and artificial intelligence in diagnosing rare diseases
This prospective study evaluated Isabel Healthcare's DDx companion in diagnosing rare diseases, finding that its suggestions often matched interdisciplinary case conferences.
2025-11
Isabel Healthcare Press Releases / Medical Device Network
HealthBook+ Partners with Isabel Healthcare to Integrate Self-Triage and Differential Diagnostic Capabilities into its Care Platform
HealthBook+, an AI-powered early identification and guidance platform, has partnered with Isabel Healthcare to integrate Isabel's self-triage and DDx Companion offerings, aiming for faster and more accurate diagnosis.
2023-07
Isabel Healthcare Press Releases / PRWeb
Isabel Healthcare and SigmaMD Collaborate to Enhance Triage and Diagnostic Capabilities
Isabel Healthcare and SigmaMD have partnered to integrate Isabel's diagnostic decision support into the SigmaMD Clinician platform, aiming to empower direct care physicians with advanced tools.
2023-08
Isabel Healthcare Press Releases / PRNewswire
Orbita and Isabel Healthcare Partner to Deliver Advanced 'Find Care' Search and Symptom Triage to Streamline Patient Access
Orbita, a provider of intelligent virtual assistants for healthcare, has partnered with Isabel Healthcare to integrate Isabel's Symptom Checker/Triage platform to streamline patient access and engagement.
2023-03
Isabel Healthcare Press Releases
Swiss-based health platform Carecircle.org and UK based Isabel Healthcare launch a global partnership to lead in consumer health enablement
Carecircle.org and Isabel Healthcare have announced a strategic partnership, backed by Microsoft, to integrate Isabel's symptom checker into the Carecircle platform, available in 158 countries.
2022-05

Frequently Asked Questions

The Isabel DDx Companion provides a ranked list of possible diagnoses in under a minute, utilizing minimal patient data and covering over 10,000 conditions. It integrates with Electronic Medical Records (EMRs) to support clinicians at the point of care, helping to expand the differential, reduce diagnostic errors, and is backed by over 22 years of continuous training and validation.
Isabel Self-Triage uses AI to deliver accurate triage advice in under a minute, asking only 11 standard questions, which results in high completion rates (97%) and significantly lower drop-off rates compared to traditional decision-tree symptom checkers. It can be seamlessly integrated into various digital channels via a comprehensive API, thereby streamlining patient access and scheduling processes.
Isabel's AI technology, rooted in machine learning, has undergone continuous training, testing, and validation for over 22 years, achieving 96% accuracy in suggesting the correct diagnosis within the top ten possibilities. The tools have been subjected to robust, peer-reviewed validation processes, with numerous independent and multi-center studies published in prestigious journals.
Isabel Clinical Educator is a case-based virtual learning platform specifically designed to teach and assess clinical reasoning skills by enabling learners to apply their knowledge to real-world clinical scenarios. It provides faculty with valuable feedback data on student performance and helps broaden learners' exposure to a diverse range of medical cases.
Isabel offers comprehensive API integration for both its DDx Companion and Self-Triage tools, allowing for seamless embedding into EMRs, patient portals, and other digital health platforms. The company actively partners with EMR vendors and various health information companies to enhance clinical workflows and improve patient access to care.
Institutional pricing for Isabel DDx Companion is typically based on organizational size, such as annual inpatient admissions or number of users, while Clinical Educator pricing is based on student count. Isabel Self-Triage offers various pricing models including per-use or fixed unlimited use. Institutional subscriptions generally include account setup, customization, initial and ongoing training, basic integrations, and continuous technical and customer support.
Founded in 1999, Isabel Healthcare has a long-standing history in pioneering machine learning for diagnosis and maintains a stable global presence. The company is actively evolving its AI solutions by integrating advanced Large Language Models (LLMs), such as ChatGPT, into its DDx Companion to enhance diagnostic reasoning and provide comparative insights, while ensuring the core validated engine maintains accuracy.

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