David Augustus Fiellin MD

Addiction Medicine

Professor, Internal Medicine, Emergency Medicine, Public Health, Yale School of Medicine Vice Chief, Faculty Affairs, General Internal Medicine Director, Program in Addiction Medicine

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789 Howard AveYnhhNew Haven, CT 06519
Phone+1 203-688-2471
Fax+1 203-688-4516

Education & Training

Yale-New Haven Medical CenterResidency, Internal Medicine, 1991 - 1994
Emory University School of MedicineClass of 1991

Certifications & Licensure

CT State Medical License 1994 - 2026
American Board of Preventive Medicine Addiction Medicine

Clinical Trials

Buprenorphine and Integrated HIV Care Evaluation Start of enrollment: 2005 Aug 01
Unknown status
Phase 4
Buprenorphine Maintenance vs. Detoxification in Prescription Opioid Dependence Start of enrollment: 2008 Jul 01
Completed
Phase 4
Testing a Primary Care Model for the Treatment of Opioid Dependence Using Long-acting Injectable Naltrexone (Vivitrol). Start of enrollment: 2011 May 01
Withdrawn
Not Applicable
Pharmacotherapy for HIV Infected Patients With Alcohol Problems Start of enrollment: 2009 Jan 01
Withdrawn
Phase 4
The Prevalence of HIV Drug Resistance and Transmission Risk in Opioid Agonist Treatment Start of enrollment: 2008 Jun 01
Completed
Integrated Stepped Care for Unhealthy Alcohol Use in HIV Start of enrollment: 2013 Jan 01
Completed
Not Applicable
Working With HIV Clinics to Adopt Addiction Treatments Using Implementation Facilitation Start of enrollment: 2016 Sep 01
Completed
Not Applicable
Opioid Use Disorder in the Emergency Department: CTN 0069 Start of enrollment: 2017 Apr 03
Completed
Not Applicable
Financial Incentives, Randomization With Stepped Treatment Trial Start of enrollment: 2018 May 01
Completed
Not Applicable
Emergency Department-Initiated Buprenorphine Validation Network Trial Start of enrollment: 2020 Jul 08
COMPLETED
PHASE2
Roles: Contact, Principal Investigator, Sub-Investigator
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Publications & Presentations

PubMed

Intervention for hospitalized people with chronic pain and elevated risk for opioid-related harm: A pilot randomized controlled trial.
Melissa B Weimer, Michele J Buonora, Alexandra M Hajduk, Adam L Ackerman, Krishna R Daggula
Journal of Hospital Medicine. 2025-04-24
Hospital-Initiated Naltrexone for Alcohol Use Disorder.
Melissa B Weimer, David A Fiellin
JAMA Internal Medicine. 2025-04-21
Impact of an electronically-integrated clinical pathway on hospital initiation of medications for alcohol use disorder and subsequent hospital utilization.
Kelsey O Cole, Melissa B Weimer, Kaicheng Wang, David A Fiellin, Anisha J Advani
Journal of Hospital Medicine. 2025-04-13

Journal Articles

Racial Disparities in Discontinuation of Long-Term Opioid Therapy Following Illicit Drug Use Among Black and White Patients
David A Fiellin, William C Becker, Drug and Alcohol Dependence
Efficacy of Extended-Release Naltrexone on HIV-Related and Drinking Outcomes Among HIV-Positive Patients: A Randomized-Controlled Trial
Stephen R Holt, Michael Virata, David A Fiellin, E Jennifer Edelman, Lynn E Fiellin, AIDS and Behavior
Level of Alcohol Use Associated with HIV Care Continuum Targets in a National U.S. Sample of Persons Living with HIV Receiving Healthcare
E Jennifer Edelman, Derek D Satre, David A Fiellin, Adam J Gordon, Katharine A Bradley, AIDS and Behavior
AUDIT‐C and ICD Codes as Phenotypes for Harmful Alcohol Use: Association with ADH1B Polymorphisms in Two U.S. Populations
David A Fiellin, William C Becker, Joel Gelernter, Henry R Kranzler, Ning Sun, John Concato, Addiction
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Authored Content

Toward Better Stewardship: Gaining Control over Controlled SubstancesMay 2018
Toward Better Stewardship: Gaining Control over Controlled SubstancesMay 2018

Press Mentions

Oral and Injectable Naltrexone Similarly Effective for Alcohol Use DisorderApril 21st, 2025
Why Do so Few U.S. Psych Hospitals Use Medications for Opioid Use Disorder?November 14th, 2024
More Doctors Can Now Prescribe a Key Opioid Treatment. Will It Help?March 3rd, 2023
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Grant Support

Integrated Stepped Care For Unhealthy Alcohol Use In HIVNational Institute On Alcohol Abuse And Alcoholism2011
Models Of Sbirt For Opioid Dependent Patients In The Emergency DepartmentNational Institute On Drug Abuse2008–2011
Buprenorphine Maintenance Vs. Detoxification In Prescription Opioid DependenceNational Institute On Drug Abuse2007–2011
Counseling For Primary Care Office-Based BuprenorphineNational Institute On Drug Abuse2005–2009