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Melissa Weimer, DO, MCR, FASAM

Internal Medicine, Addiction Medicine


Melissa Weimer, DO, is board certified in Internal Medicine and Addiction Medicine and has a clinical and research focus on expanding access to substance use disorder treatment, particularly in the hospital setting. She also has fellowship training and years of experience in the management of complex pain, particularly for patients with concomitant opioid use disorders. She is the medical director of the Yale Addiction Medicine Consult Service (YAMCS), a multidisciplinary, hospital-based program to address the substance use disorder needs of patients admitted to Yale New Haven Hospital.  

Dr. Weimer has worked on a local, state, and national level to improve access to evidence-based treatments for patients with substance use disorder. Her work to expand addiction treatment in hospital settings started at Oregon Health & Science University, where she worked with colleagues and community partners to create one of the nation's first hospital-based models to initiate addiction treatment while patients are hospitalized from a complication of their substance use.  

An experienced educator, she teaches health care students and professionals about substance use disorders and their treatment to promote the expansion of the addiction medicine workforce. She additionally serves as the associate program director of the Yale Addiction Medicine Fellowship program.    


  • Assistant Professor
  • Medical Director of the Addiction Medicine Consult Service, Program in Addiction Medicine
  • Associate Program Director of the Addiction Medicine Fellowship Program, Medicine

Education & Training

  • MCR
    Oregon Health & Science University (2012)
  • General Medicine Fellowship
    Oregon Health & Science University (2012)
  • Residency
    Oregon Health & Science University (2010)
  • Internship
    Oregon Health & Science University (2008)
  • DO
    Virginia College of Osteopathic Medicine (2007)
  • BA
    University of Virginia, Religious Studies & Biology (2001)

Additional Information