Surveys of informal caregivers (family members or friends) of seriously ill patients and following patient death are an important source of information regarding quality of serious illness and end-of-life care, and can be used to derive quality measures. Standardized EHR information regarding the names and contact information (e.g., mailing addresses, email addresses, and/or phone numbers) of the family members or friends most involved in or familiar with patients’ care are critical to enable the collection of these surveys.