REVIEW: Dr. Mauro Leyba, rheumatologist, 559-299-6000 Fresno 93720 Good doctor but HORRIBLE customer service RUDE office manager. Always have to wait over an hour PASSED appt time and harassment by billing for an amount owed less than 6 months for less than $200 despite regular payments. I got harassed for a half an hour over the phone today and treated very unprofessional. I will be finding a new doctor due to office staff. I strongly recommend you DO NOT see this office for your medical needs