Esther DelgadoMedical Biller Contact Info Division of Rheumatology, Allergy and Immunology University of Puerto Rico Medical Sciences Campus PO Box 365067 San Juan, PR 00936-5067 (787)-758-2525 Fax: (787)-764-6839 Education Medical Billing John Dewey College, San Juan, PR, 2000 Certifications NCCI Edits, Modifiers and MUES Modificadores 58, 78 y 79