Dr. Pabustan, aside from being an Internist and Rheumatologist, is a licensed Physical Therapist also from UST. He integrates his Physical Therapy experience to add a different dimension that sets him apart in his treatment of rheumatic and autoimmune patients like Gout, Osteoarthritis, Rheumatoid Arthritis, Lupus, Vasculitis, Myositis, Spondyloarthropathy, Scleroderma and the like. Like his esteemed UST predecessor, he aims to spread awareness of Lupus throughout the Philippines particularly in his province of Zambales.