Dr. Cynthia Penn Duecker specializes in emergency medicine in Pleasanton area. Dr. Cynthia Penn Duecker, MD has a medical practice at 5555 West Las Positas Boulevard, Pleasanton CA, and has over 32 years of experience in the field of medicine. She graduated from University Of Iowa College Of Medicine with her medical degree in 1985. She is affiliated with numerous hospitals, including Valleycare Medical Center (CA) and more. Dr. Penn Duecker is accepting new patients at her medical office and practice location in Pleasanton, California. She is available for appointments, preventative care, medical care as well as ongoing patient care.