Dr. Javier Rosas is a ship physician for Royal Caribbean International with over ten years of clinical experience in emergency and maritime medicine. He manages healthcare for populations of 3,000 to 6,000 passengers and crew, often practicing more than 1,000 miles from the nearest hospital with a formulary of roughly 40 medications, no advanced imaging, and no specialist backup.

He is also a clinical AI specialist who trains and evaluates medical large language models across multiple platforms, including work in RLHF, prompt engineering, and clinical safety evaluation. His research comparing clinical AI tools against general-purpose LLMs using FDA prescribing rubrics revealed a 2.4x performance gap and significant patient safety concerns in frontier models.

This dual practice, delivering care at the extreme edge of medicine while building the AI systems intended to support clinicians, gives him a perspective that no office-based AI researcher or hospital-based physician can replicate. He writes about healthcare AI at theremoteaidoc.com.