Patient App: Scheduling, Intake & Messaging

01 / Business Challenge

• Scheduling interfaces to the EHR varied by site and could not sustain high-volume mobile traffic without throttling.
• Patients abandoned long questionnaires on small screens before finishing.
• Care teams wanted secure messaging without exposing the full medical chart on a phone.
• The app had to work well with large text, screen readers, and older adults with varying dexterity.
• Compliance required audit trails and the minimum patient data on the device necessary for each task.

02 / Our Approach

How we executed this engagement in practice. The phases below describe the delivery rhythm we use across ServiceNow, custom engineering, and mobile programs.

We shipped a single Flutter codebase for iOS and Android, integrated through the client’s existing integration hub (middleware)—not by writing directly from the app into the EHR. Pre-visit steps were broken into short, save-and-resume flows. Push notifications opened the right appointment screen; message retention followed clinical policy on the server. We tested with real patient cohorts and refined language, layout, and touch targets before wider clinic rollout.

• Built appointment list, reschedule requests, and calendar exports.
• Implemented guided pre-visit questionnaires with validation and EHR handoff.
• Added secure in-app messaging with role-based visibility.
• Integrated proxy PDF viewers for lab letters with watermarking.
• Localized key flows for two primary languages used in the service area.
• Established release cadence with phased clinic rollout and training videos.