National Health Expenditures (NHE), compiled annually by the Centers for Medicare & Medicaid Services (CMS), represents total U.S. healthcare spending across all payment sources and categories. This comprehensive metric includes hospital care (31%), physician/clinical services (20%), prescription drugs (9%), and other medical goods/services. Funding sources comprise private health insurance (31%), Medicare (21%), Medicaid (16%), out-of-pocket spending (10%), and other sources. The data tracks spending by age groups, showing highest per-capita costs among those 65+ ($19,098 annually). Growth rates average 5.4% annually since 1960, consistently outpacing GDP growth. Regional variations reveal significant disparities in per-capita spending (highest in Northeast, lowest in West). The metric includes detailed analysis of price inflation versus utilization changes, technology adoption impacts, and demographic influences. Healthcare spending represents approximately 18.3% of GDP, projected to reach 19.7% by 2028, making it crucial for understanding both healthcare system dynamics and broader economic trends.