Participates in outpatient clinical trials involving pediatric and adult patients with EGIDs, including protocol-specific clinical assessments, physical examinations, review of clinical and laboratory findings, and identification and timely communication of adverse events, changes in medical history, concomitant medications, and other protocol-relevant clinical findings to the Principal Investigator (PI) or Sub-Investigator (Sub-I), in accordance with study protocols, institutional policies, and scope of practice. Supports pre-procedure preparation for patients with EGIDs, including updating clinical documentation, ordering appropriate laboratory studies, preparing orders, reviewing results with the treating physician as needed, communicating results and care plans to patients and families, and coordinating follow-up care.