This document describes an IoT-based patient health monitoring system using Node MCU-ESP8266. The proposed system uses sensors to monitor vital signs like temperature, heart rate, and oxygen levels and sends this data to a server via Node MCU. If any parameter goes outside normal ranges, an alert is sent to doctors. This allows remote monitoring of patients and faster emergency response. The system aims to reduce healthcare costs by enabling continuous monitoring without needing as many in-person doctor visits.