William S Zirker, M.D. Crozer Medical Assoc At Crum 1553 Chester Pike # 201 Crum Lynne PA 19022 Geriatric Medicine Search By Practice Type Specialty: Select an area of practice: Allergy, Asthma & ImmunologyAnesthesiologyBariatric Medicine / SurgeryBreast SurgeryCardio Thoracic SurgeryCardiovascular DiseaseChiropractic CareColon & Rectal SurgeryCritical Care / PulmonologyDermatologyEar Nose and Throat (Otolaryngology)Endocrinology, Diabetes & MetabolismFacial Plastic SurgeryFamily PracticeGastroenterologyGeneral SurgeryGeriatric MedicineInfectious DiseaseInternal MedicineNephrologyNeurological Surgery (Brain & Spine)NeurologyOB/GynOncology / HematologyOphthalmologyOrthopedic SurgeryPain Management/P M & RPediatric CardiologyPediatric EndocrinologyPediatric Infectious DiseasePediatric NephrologyPediatric Neurology & Child DevelopmentPediatric Oncology / HematologyPediatric Orthopedic SurgeryPediatric PulmonologyPediatric SurgeryPediatricsPhysical Medicine / PhysiatryPlastic / Cosmetic SurgeryPodiatryPsychiatryPsychologyRadiation OncologyRadiologyReproductive MedicineRheumatologySpinal SurgerySports MedicineUrgent Care / Emergency MedicineUrologyVascular Surgery County: Select a county: AlleghenyBerksBlairBradfordBucksButlerCarbonCentreChesterCumberlandDauphinDelawareErieLackawannaLancasterLebanonLehighLuzerneLycomingMonroeMontgomeryMontourNorthamptonPhiladelphiaSchuylkillWayneWestmoreland Search Please Select A Practice Area and County Search Settings Doctor or Practice Name: Search Please Enter A Name