RBS Wellness Spa is a physician-led wellness and medical aesthetics practice in Redlands, California, founded by Aya Eguchi, MD. A U.S.-trained physician of Japanese heritage, Dr. Eguchi is board-certified in internal medicine and obesity medicine. The practice combines evidence-based Western medicine with the Japanese hospitality philosophy of omotenashi, emphasizing attentive service, patient education, safety, and personalized care.

Services include medical consultations and visits, with in-person and video appointments often available on the same or next day. The medical weight loss program offers individualized, clinically guided plans focused on metabolic health, appetite regulation, and long-term weight maintenance. The menopause wellness program provides comprehensive physician evaluation, personalized prescriptions, and lifestyle guidance. RBS Wellness Spa also offers non-invasive and minimally invasive aesthetic treatments, including wrinkle-relaxing injections, dermal fillers, chemical peels, laser treatments, microneedling, and hair restoration. Care is tailored to each patient’s goals, with an emphasis on natural outcomes and lasting well-being. The clinic does not dispense certain weight loss or menopause medications; prescriptions may be covered by insurance.