The Puerto Rico government has issued a Request for Proposal (RFP) seeking a physician billing services provider for the William Osler Health System, specifically targeting billing services for uninsured patients. This procurement opportunity is focused on selecting a qualified vendor to facilitate comprehensive medical billing submission and processing. The RFP was posted on August 26, 2025, with proposals due by September 22, 2025, indicating a relatively short response window of approximately four weeks. The ideal provider will demonstrate expertise in medical billing workflows, particularly for uninsured patient populations, and must possess robust technological capabilities to manage complex billing documentation and submission processes. While specific evaluation criteria are not explicitly detailed in the provided documentation, vendors can anticipate being assessed on their technical capabilities, cost-effectiveness, compliance with healthcare billing regulations, and proven experience in similar healthcare billing environments. The RFP does not specify explicit set-aside designations or specific restrictions on respondent organizations. However, given the specialized nature of physician billing services, potential bidders should expect to have comprehensive healthcare billing credentials, potentially including certifications in medical coding and billing compliance. No incumbent vendor information or existing technological infrastructure details are provided in the current documentation. Without definitive budget range information, interested vendors should be prepared to submit competitive proposals that demonstrate cost-efficiency and technical proficiency. Potential respondents should carefully review all RFP documentation to ensure full compliance with submission requirements and to understand the complete scope of services expected by the William Osler Health System in Puerto Rico.