Healthcare

NullStack’s patient portal architecture is built on Django REST Framework with a Vue frontend for desktop and a Flutter app for mobile. The booking module handles multi-doctor, multi-location scheduling with real-time slot availability, integrates with WhatsApp Business API for automated appointment confirmations and reminders at 24-hour and 2-hour pre-appointment intervals, and dispatches post-visit summary emails with the consultation notes and next-step instructions the doctor has approved for release. Role-based access control is implemented at the application and database layers: front-desk staff can see appointment history but not clinical notes; doctors can see and edit clinical notes for their own patients only; administrators can access aggregate reports without accessing individual patient records. All patient data is stored in an encrypted PostgreSQL database on the client’s own infrastructure, consistent with DPDP Act data localisation obligations. A VAPT audit conducted by a third-party security firm is included in NullStack’s standard healthcare deployment closure checklist.

Clinical documentation — writing structured consultation notes, discharge summaries, referral letters, and prescription records — consumes a significant portion of a doctor’s time per consultation. NullStack builds AI documentation assistance tools that transcribe the doctor’s spoken notes using a local Whisper model (running on-premise for data security), structure the transcript into a standardised clinical note format (SOAP or the client’s preferred template), and present a draft for the doctor’s review and confirmation before saving to the EMR. The tool does not make clinical decisions; it handles the transcription and formatting tasks, reducing documentation time per consultation by 50 to 70 percent in the deployments NullStack has completed in this category. The system is tuned on medical terminology to reduce transcription error rates on clinical vocabulary.

Healthcare digital marketing operates under specific constraints that general marketing agencies frequently mishandle: ICMR guidelines prohibit certain categories of comparative claims, regulatory guidance restricts before-and-after imagery for certain procedure types, and Google’s healthcare advertising policies require certification for specific ad categories. NullStack’s healthcare marketing practice works within these constraints while maximising organic and paid patient acquisition through technically sound SEO (LocalBusiness and MedicalClinic schema, specialty keyword targeting, Google Business Profile management) and compliant paid campaigns. For specialist practices, long-tail symptom and procedure keywords — which carry high purchase intent and relatively low CPCs compared to broad medical keywords — consistently produce the best cost-per-appointment outcomes in our campaign data.

NullStack’s diagnostic inventory management system tracks reagent stock by batch number and expiry date, sends automated reorder alerts when a consumable drops below a configurable threshold, and reconciles received stock against supplier invoices using an OCR-based invoice processing pipeline that eliminates manual data entry for goods receipt. For multi-branch operations, the system provides a central visibility layer showing stock levels across all locations, with the ability to initiate inter-branch transfers when one location has surplus and another is approaching a stockout. Regulatory compliance documentation — controlled substance registers, cold chain temperature logs — is maintained digitally with timestamps and user attribution, simplifying the process of responding to regulatory inspection requests.