This case study analyzes the US healthcare system, particularly focusing on outpatient and primary care services, in the context of the Affordable Care Act (ACA). It explores the growth of ambulatory services, driven by factors such as technological advancements, patient preferences, and policy changes favoring outpatient care. The study differentiates between outpatient, ambulatory, and primary care, and highlights the role of community health centers and quarantine stations. The paper also discusses the impact of the ACA on healthcare accessibility and affordability, emphasizing its role in increasing the number of insured individuals. The conclusion highlights the significant changes brought about by the ACA in the US healthcare landscape and its impact on the accessibility to care services.