This research introduces a groundbreaking method for healthcare time-series forecasting using a Large Language Model (LLM) foundation model. By leveraging a comprehensive dataset of over 50 million IQVIA time-series trends, which includes data on procedure demands, sales and prescriptions (TRx), alongside publicly available data spanning two decades, the model aims to significantly enhance predictive accuracy in various healthcare applications. The model's transformer-based architecture incorporates self-attention mechanisms to effectively capture complex temporal dependencies within historical time-series trends, offering a sophisticated approach to understanding patterns, trends and cyclical variations.