Mobile Crisis Unit Addiction and mental health social workers and/or nurses provide timely and well-coordinated responses to people who are experiencing a mental health crisis and who require assessment or intervention in the community. Mobile Crisis Units provide interventions to defuse situations in the community to individuals and families outside of the usual hours of operations including evenings and weekends.Assessment and crisis intervention occur in the person’s own environment or the environment of their choice. FREDERICTON AREA Phone: 506-453-2132Hours of operation: Noon to 10 p.m., 7 days a week, including statutory holidays MIRAMICHI AREA Phone: 506-623-3333Hours of operation: 8 a.m. to 8 p.m. daily MONCTON AREA Phone: 1-866-771-7760Hours of operation: Noon to 10 p.m. daily SAINT JOHN AREA Phone: 1-888-811-3664Hours of operation: 11 a.m. to 11 p.m. daily (24-hour telephone response) UPPER RIVER VALLEY AREA Phone: 1-888-667-0444Hours of operation: 2 to 10 p.m. daily