HealthCall.

Tech Stack

• Next.js
• React
• Tailwind CSS
• Node.js
• PostgreSQL
• WhatsApp API

Problem

Independent clinics often rely on scattered systems: phone calls for appointments, paper for prescriptions, and generic software for staff management. Patients frequently miss appointments due to lack of reminders, and managing physically arriving walk-in patients creates queues at the reception desks.

Solution

I built a unified, multi-tenant SaaS platform where every clinic gets its own isolated workspace. Patients can view doctor availability and book slots online, or scan an automatically generated clinic QR code to register as a walk-in patient instantly. On the provider side, doctors can quickly generate digital prescriptions using predefined templates, send updates and reminders via WhatsApp API, and print or download clinic resources directly.

Key Decisions

• —Engineered a robust multi-tenant database architecture so multiple clinics can operate on the same backend securely without data leakage.
• —Integrated WhatsApp Business API for sending automated appointment confirmations, real-time reminders, and digital prescription PDFs directly to patients.
• —Built an automated QR-code generation system enabling clinics to print check-in flyers for instant, card-less walk-in registrations.
• —Built a custom rich-text template engine for prescriptions and medical certificates to save doctors time during consultations.
• —Designed an intuitive appointment calendar system handling complex rules like day-offs, emergency shifts, and recurring availability.

Outcome

The platform transformed clinic operations. By moving from paper to digital templates, doctors significantly reduced consultation overhead, and the automated booking system completely eliminated phone-tag for patients.