Background: There is limited literature regarding outpatient palliative care, and even more limited literature describing factors associated with unscheduled visits. Our aim was to identify clinical characteristics of patients who walk-in (present unscheduled) to the outpatient SCC with the hypothesize that the patients who present for unscheduled visits have more severe symptom distress as compared to those patients who present for scheduled appointments. Methods: We compared 183 patients with unscheduled consults (CO) vs a random sample of 361 patients with scheduled CO and 159 patients with unscheduled follow-up (FU) visits vs a random sample of 318 patients with scheduled FU visits. Results: Among 544 total CO visits, unscheduled visits had worse median Edmonton Symptom Assessment Scale (ESAS) symptoms (on a scale from 0 to 10): pain (6.5 vs 4.7, p < .0001), fatigue (p = .002), nausea (p = .017), depression (p = .003), anxiety (p = 0.02), sleep (p = .0002), and overall feeling of well-being (p = 0.0009). There was no statistical difference in shortness of breath, financial distress, nor spiritual pain. Daily opioid dose (MEDD in mg) was significantly higher in unscheduled CO visits (119.7 vs 62.9, p = .0004). Among 344 total FU visits, unscheduled visits had worse median ESAS symptoms: pain (5.7 vs 4.2, p = .0001), fatigue (p = .0006), depression (p = .019), anxiety (p = .014) and higher MEDD (111.3 vs 73.6, p = .0009). There was no difference in type of insurance coverage and better ECOG (p = .015) in unscheduled vs scheduled CO visits. Unscheduled CO visits were more likely to be from outside the Houston area (161/361, 45% vs. 40/133, 30%, p < 0.0001). Conclusions: Patients who are either referred as unscheduled CO visits or who present as unscheduled FU visits have higher levels of physical and psychosocial distress and higher opioid dose. Outpatient palliative care centers need to provide opportunity for walk-in referrals for timely management of these issues.