Medscape has published several articles on Physician Burnout, Depression and Suicide in February 2015.  A chat with Mike Myers contains much information and collates useful references from the service.  Subscription (free) is required; well worth the effort!

American Foundation for Suicide Prevention
Suicide Safe application from SAMSHA

Physician Depression and Suicide Prevention Project
"Struggling in Silence" program information
Suicide Awareness Project information

American Medical Student Association (AMSA) Women in Medicine Depression Resource Guide

American Association of Suicidology (AASFacts on Suicide Useful Links

American Psychological Association APA HelpCenter

MDMentor, a website devoted to physician support with emphasis on litigation stress

NLM and NIH Medline Plus on Suicide and Depression--- a very comprehensive information source on many aspects

Suicide Prevention Resource Center, a federally funded organization which provides prevention support, training, and resource materials to strengthen suicide prevention networks.  Though not aimed at physicians, it has a wealth of materials and useful links. 

Preventing Suicide Network , another federally funded organization with information of particular relevance to physicians

Suicide Reference Library , a website whose mission is to provide information about suicide

Suicide and Mental Health Association International, an organization dedicated to suicide and mental health related issues with emphasis on prevention

eMedicine Depression and Anxiety Resource Center sponsored site containing links to many useful materials and references

Texas Medicine, Recognition of Potential for Suicide in physicians 

Massachusetts Medical Society Vital Signs: Understanding Risk Factors for Physician Suicide

Depression and Suicide, a superb resource document well referenced by Dr. Mike Magee

MacArthur Initiative on Depression in Primary Care aimed at physicians caring for depressed patients but useful info can be found here

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