How do i contact the los angeles county department of health? For questions, contact the DMH Help Desk via email at [email protected] or call (213) 351-1335. Links. DMH Web Applications.What is the lacdmh help line? The LACDMH Help Line serves as the primary entry point for mental health services with the Los Angeles County Department of Mental Health. Help us spread the word about this important resource. Access our Toolkit here.How do i contact the dmh help desk? For questions, contact the DMH Help Desk via email at [email protected] or call (213) 351-1335.Where can i get help with mental health services in los angeles? For 24/7 Help, please call our Help Line at (800) 854-7771 The LACDMH Help Line serves as the primary entry point for mental health services with the Los Angeles County Department of Mental Health. Help us spread the word about this important resource. Access our Toolkit here.