The Integrated Health Services Project will implement and evaluate an intervention that integrates routine, opt-out HIV and STI screening and PrEP navigation into primary healthcare workflows. Guided by the Comprehensive Theory of Integration, the intervention aligns protocols, standing orders, electronic health records (EHR) prompts, and care coordination processes to transform sexual and reproductive health delivery from episodic, provider-dependent practices into routinized, team-based care. A quasi-experimental pilot will compare 12 months of standard care to 12 months of integrated care among adults aged 18–45. The primary outcome is increased HIV screening uptake. Secondary outcomes will assess STI screening uptake, PrEP navigation, workflow fidelity, care coordination efficiency, patient satisfaction, and cost-effectiveness. Findings will inform the refinement, scalability, and long-term sustainability of integrated sexual reproductive health models in primary care settings. 2.