Joan M. Threlfall, CRNA Joan M. Threlfall, CRNALanguages: EnglishPhone: 202-444-8160Fax: 202-444-7993Contact this Provider: 202-444-8160SpecialtiesAnesthesiologyPractice Locations3800 Reservoir Road NorthwestConcentrated Care Center Lower LevelWashington, DC 20007View MapPhone: 202-444-8160Fax: 202-444-7993Member of Medical StaffView SiteMedStar Harbor HospitalView SiteMedStar Union Memorial HospitalView SiteMedStar Georgetown University Hospital