Psychosocial health predicts and contributes to medical outcomes for patients undergoing hematopoietic stem cell transplantation (HSCT). Yet, there are no standards for psychosocial assessments or support for both patients and caregivers across the care continuum. To examine the current state of psychosocial care, clinicians were sent a survey of their psychosocial assessment practices for patients and caregivers undergoing HSCT via the Listservs of professional organizations. Descriptive statistics and bivariate analyses were performed to summarize the findings. While 96% of participants reported routine pre-HSCT psychosocial assessment of patients, only 10.6% routinely used a validated transplant risk-assessment measure. Just 27% routinely performed follow-up psychosocial assessments. In contrast, only 47% of participants routinely assessed the psychosocial needs of family caregivers pre-HSCT, and 13% routinely performed follow-up assessments for caregivers. Most (90%) reported social workers were the primary providers of assessments. While patient-report measures were used for evaluation, the majority of assessments were clinical interviews. No significant differences were found between programs that treated adult and pediatric patients versus those only treating adult patients. Our findings highlight the lack of standard psychosocial practices for patients and family caregivers undergoing HSCT and we offer recommendations to fill this gap.