Background: Treatment by a multidisciplinary healthcare team can improve patient outcomes, but not all prostate cancer (PC) patients may access multiple providers. This study explored whether differences in healthcare team at treatment were associated with PC treatment type and decision-making. Methods: Of 311 PC patients enrolled in the Cancer Support Community’s Cancer Experience Registry online, 160 (32% ever metastatic, 28% had recurrence, median 3 years since diagnosis) indicated which specialists comprised their healthcare team during treatment (urologist versus a specialist team including 2-5 doctors, 70% of which included urologists). We examined PC treatment decision-making using chi-square tests, independent sample t-tests, and linear regression. Results: The majority were not experiencing symptoms of PC at diagnosis (69%); 58% were diagnosed after a routine check-up. More PC patients with advanced disease at diagnosis had a team of specialists, whereas those diagnosed at stages 1 or 2 typically only saw a urologist (p<0.01). Most first received care at a private urology practice (44%) compared to 27% for current treatment. Treatment discussions varied by treatment for urologist-only (28%) versus a team of specialists (72%): chemotherapy (16% vs 36%, p=.01), surgery (89% vs 65%, p<.01), radiation (82% vs 80%, p=.75), hormones (36% vs 75%, p<.001), and active surveillance (51% vs 23%, p<.001). More patients who had seen only a urologist had surgery (95% vs 43%, p<.001); those seeing a specialty team tended to undergo other treatments, such as chemotherapy (4% vs 30%, p=.001), radiation (12% vs 83%, p<.001), and hormones (27% vs 77%, p<.001). After controlling for stage at diagnosis, those treated only by a urologist had lower treatment regret (β=0.22, p<.01). Conclusions: Advanced PC patients more often treated by a specialist team and discuss different treatment options vs. those followed by a urologist only. While effects were small, care provider type was associated with treatment regret and confidence. Healthcare teams could improve the patient experience by increasing communication surrounding navigating myriad treatment options. Clinical trial information: NCT02333604