Education/CredentialsResidency: Good Samaritan HospitalMedical Degree: Cebu Institute of MedicineBachelor's Degree: Velez College Board Certifications & LicensesAmerican Board of Internal Medicine (Certification Date: 2012-08-16) - (Recertification Date: 2023-01-01) SpecialtiesInternal Medicine Contact Information Medical Sciences Building Office 513-298-7325 Email castanlr@ucmail.uc.edu Clinical Interests Emergency Medicine