Duo Health: An EHR-Integrated Patient Portal That Automates Data Sync for Clinical Teams

Before writing any code, we defined the constraints of the user base. We researched the specific accessibility needs of elderly CKD patients: common vision impairments, reduced fine motor control, cognitive load limitations, and low familiarity with smartphone apps. This research produced an Accessibility Roadmap that guided every design and development decision throughout the project.

We chose React Native to deploy simultaneous iOS and Android apps from a single codebase, maximizing reach with the smallest possible team.

The MVP covered three core functions: secure login, care plan viewing, and direct messaging with the care team. We stripped out everything that wasn’t essential for the first release. The backend was set up on Microsoft Azure to align with Duo Health’s existing Azure-based infrastructure. The Canvas EHR integration via Redox was operational from day one — patient messages appeared in the medical record immediately.

Healthcare systems frequently create duplicate records when patient names, dates of birth, or addresses don’t match exactly across systems. We integrated Verato’s Master Patient Index so that every patient registering through the app is matched against the clinical database using referential matching (not just exact string comparison). This guarantees data integrity from the first interaction.

Once the MVP was in patients’ hands, we monitored usage patterns and collected feedback from both patients and care teams. Based on this data, we added appointment scheduling (integrated with Microsoft Dynamics CRM), health goal tracking, and medication reminders. We also integrated Google Address Validator to ensure accurate addresses for medication delivery logistics.

Early feedback showed that care coordinators were overwhelmed by messages — both clinical and administrative. We built a routing layer that categorizes incoming messages and directs them to the appropriate team member. Clinical questions reach a nurse within minutes. Scheduling and refill requests go to a coordinator. This reduced the response time for urgent messages and freed up clinical staff.

Yalantis remains Duo Health’s development partner. We continue adding features, optimizing the EHR integration, and improving the accessibility of the platform as the patient base grows. The portal has become the cornerstone of Duo Health’s care delivery model for CKD patients across the US.