Medically unexplained symptoms and/or syndromes (MUS) affect the health of 20% to 30% of patients seen in primary care. Optimally, treatment for these patients requires an interdisciplinary team consisting of both primary care and mental health providers. We propose that counseling psychologists may develop expertise to improve the care of patients with MUS who are already in their practice, expand the number of patients they help, and enhance the integration of counseling psychology into the broader medical community. Additionally, counseling psychologists’ expertise in culture, attunement to therapeutic processes, and focus on prioritizing patients’ perspectives and quality of life can fill the gap in research on MUS. By focusing on MUS, counseling psychologists can provide unique contributions to health service delivery.