Traditional and basic service models continue to be a source of many issues with public health services. This research aims to optimize the efficiency and quality of service at the Atlantic Clinic through the implementation of a web-based information system. Analysis and trials show that current conventional service methods are no longer adequate, causing sub-optimality in the service process. The new system designed is able to increase administrative efficiency by speeding up recording and searching for patient data. In addition, the queuing system provides better time estimation for patients, while the medical record system ensures the security and accuracy of patient data. An integrated cashier system also increases the efficiency of payment transactions, reducing cost calculation errors. Management of master data which includes data on drugs, medical procedures, doctors and users becomes more structured and accurate. The implementation of this system is expected to bring significant changes in the quality of service at the Atlantic Clinic, making it more modern, effective and efficient.