Marek Chawarski, PhD
Professor of Psychiatry and Emergency MedicineDownloadHi-Res Photo
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Appointments
Emergency Medicine
Fully Joint
Psychiatry
Fully Joint
Additional Titles
Affiliated Faculty, Yale Institute for Global Health
Contact Info
Psychiatry
CMHC/SAC, 34 Park Street
New Haven, CT 06519
United States
Appointments
Emergency Medicine
Fully Joint
Psychiatry
Fully Joint
Additional Titles
Affiliated Faculty, Yale Institute for Global Health
Contact Info
Psychiatry
CMHC/SAC, 34 Park Street
New Haven, CT 06519
United States
Appointments
Emergency Medicine
Fully Joint
Psychiatry
Fully Joint
Additional Titles
Affiliated Faculty, Yale Institute for Global Health
Contact Info
Psychiatry
CMHC/SAC, 34 Park Street
New Haven, CT 06519
United States
About
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Titles
Professor of Psychiatry and Emergency Medicine
Affiliated Faculty, Yale Institute for Global Health
Appointments
Emergency Medicine
ProfessorFully JointPsychiatry
ProfessorFully Joint
Other Departments & Organizations
Education & Training
- PhD
- Yale University (1995)
- MPhil
- Yale University, Psychology (1993)
- MS
- Yale University, Psychology/Cognitive (1992)
- MA
- Jagiellonian University, Psychology/Clinical, Cognitive (1987)
Research
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Overview
Medical Research Interests
Amphetamine-Related Disorders; China; Indonesia; Iran; Malaysia; Opioid-Related Disorders; Psychiatry; Risk-Taking; Russia; Substance Abuse Detection; Taiwan
ORCID
0000-0001-6254-3092
Research at a Glance
Yale Co-Authors
Frequent collaborators of Marek Chawarski's published research.
Publications Timeline
A big-picture view of Marek Chawarski's research output by year.
Research Interests
Research topics Marek Chawarski is interested in exploring.
Patrick G. O'Connor, MD, MPH, MACP
Gail D'Onofrio, MD, MS
David Fiellin, MD
Edouard Coupet II, MD, MS
Kathryn Hawk, MD, MHS
Declan Barry, PhD
124Publications
4,878Citations
Opioid-Related Disorders
Malaysia
Risk-Taking
China
Substance Abuse Detection
Amphetamine-Related Disorders
Publications
2026
Unintended prolonged opioid use: a prospective case-control study.
Hooten W, Erickson D, Chawarski M, Scholz N, Waljee J, Brummett C, Jeffery M. Unintended prolonged opioid use: a prospective case-control study. Pain 2026 PMID: 41800757, DOI: 10.1097/j.pain.0000000000003945.Peer-Reviewed Original ResearchConceptsOpioid-naive adultsIncident casesOpioid useOpioid prescriptionsOver-the-counter pain medicationsAssociated with significant morbidityProspective case control studyBehavioral pain responsesProlonged opioid useModifiable risk factorsUrine drug testingCase-control studyAt-risk patientsEmergency department evaluationShort-term useLogistic regression analysisPain interferenceCataract surgeryFormer smokersPostsurgical painOpioid cravingNonsurgical indicationsPain responsePatient ageSignificant morbidityExploring Preferences in Emergency Department Coordination of Opioid Use Disorder Treatment by Race and Ethnicity
Coupet E, Chawarski M, Hercules K, Williams J, Ward A, Owens P, Fiellin D, Hawk K, Martel S, D'Onofrio G. Exploring Preferences in Emergency Department Coordination of Opioid Use Disorder Treatment by Race and Ethnicity. Academic Emergency Medicine 2026, 33: e70253. PMID: 41735229, PMCID: PMC12932257, DOI: 10.1111/acem.70253.Peer-Reviewed Original ResearchMeSH Keywords and ConceptsConceptsED-initiated buprenorphineOpioid use disorderPost-visitFacilitators of treatment engagementTreatment coordinationBlack participantsWhite participantsEmergency departmentTreatment engagementFacilitators of engagementED-based studiesSupport-related factorsContextual factorsTelephone individual interviewsEnhanced accessOpioid use disorder treatmentHospital effortsCare efficiencyED sitesEthnic disparitiesHealth systemIndividual interviewsWhite individualsVisitsParticipantsChapter 2 The scientific evolution of kratom: a historical overview
Karunakaran T, Marimuthu Y, Vicknasingam B, Chawarski M. Chapter 2 The scientific evolution of kratom: a historical overview. 2026, 13-20. DOI: 10.1016/b978-0-443-27412-1.00001-8.Peer-Reviewed Original ResearchCitationsConceptsSoutheast AsiaScientific evolutionPsychoactive effectsOpioid withdrawal symptomsSoutheast Asian countriesKratom plantHistorical usePolitical contentLong historyChronic painWithdrawal symptomsHistorical overviewKratom leavesSoutheastAsiaTherapeutic potentialTreatment of severe disordersKratomLegal statusHealth knowledge gapsKratom treesSevere disordersOpioidPainAnecdotal reports
2025
Use of nalmefene and behavioral counseling in patients with combined opioid and alcohol dependence
Vetrova M, Владиславовна В, Blokhina E, Андреевна Б, Trachuk P, Александрович Т, Toussova O, Викторовна Т, Bushara N, Михайловна Б, Palatkin V, Яковлевич П, Yaroslavtseva T, Сергеевна Я, Belozertseva I, Владимировна Б, Dravolina O, Андреевна Д, Chawarski M, Марек Ч, Krupitsky E, Михайлович К. Use of nalmefene and behavioral counseling in patients with combined opioid and alcohol dependence. Neurology Bulletin 2025, LVII: 380-391. DOI: 10.17816/nb685805.Peer-Reviewed Original ResearchConceptsActive alcohol dependenceWeekly individual sessionsAlcohol dependenceOpioid dependenceMultiple withdrawalsBehavioral counselingCognitive behavioral therapyPsychoactive substancesRisky alcohol useOral nalmefeneBehavioral therapyOpioid abstinenceMotivational interviewingNalmefeneSelf-ReportAlcohol abuseAlcohol useAbstinenceSafety of nalmefeneWithdrawal of consentCounselingAlcoholCombination opioidsOpioid useOpioid551 Racial and Ethnic Differences in Emergency Department Treatment Coordination Preferences for Opioid Use Disorder
Coupet E, Chawarski M, Hercules K, Williams J, Murphy-Ward A, Owens P, Fiellin D, Hawk K, Martel S, D'Onofrio G. 551 Racial and Ethnic Differences in Emergency Department Treatment Coordination Preferences for Opioid Use Disorder. Annals Of Emergency Medicine 2025, 86: s237. DOI: 10.1016/j.annemergmed.2025.06.573.Peer-Reviewed Original ResearchRacial and Ethnic Factors and Opioid Use Disorder Treatment After an Emergency Department Visit
Coupet E, Chawarski M, Hercules K, Williams J, Ward A, Owens P, Fiellin D, Hawk K, Martel S, D’Onofrio G. Racial and Ethnic Factors and Opioid Use Disorder Treatment After an Emergency Department Visit. JAMA Network Open 2025, 8: e2520661. PMID: 40658416, PMCID: PMC12260995, DOI: 10.1001/jamanetworkopen.2025.20661.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsOpioid use disorderHealth systemTreatment engagementEmergency departmentED visitsHispanic individualsSemistructured individual telephone interviewsExperiences of racismBlack participantsFamily supportQualitative studyWhite individualsBarriers to treatment engagementHealth system levelED-based interventionsIndividual telephone interviewsHealth care accessLack of treatment engagementEmergency department visitsParticipants expressed concernsThematic analysis of interview dataMental health issuesPatterns of barriersUntreated opioid use disorderAnalysis of interview dataUnintended Prolonged Opioid Use: Protocol for a Case-Controlled Trial
Hooten W, Erickson D, Chawarski M, Scholz N, Waljee J, Brummett C, Jeffery M. Unintended Prolonged Opioid Use: Protocol for a Case-Controlled Trial. JMIR Research Protocols 2025, 14: e72032. PMID: 39992690, PMCID: PMC11976181, DOI: 10.2196/72032.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsINTERNATIONAL REGISTERED REPORT IDENTIFIERElectronic health record systemsPatient recruitmentPractice environment characteristicsPrescribing opioids to patientsOpioid prescriptionsHealth record systemsPatient characteristicsContinuation of opioid therapyIndividual practice environmentsOpioids to patientsOpioid-naive adultsOpioid-naive patientsProlonged opioid useSelf-report surveyNational administrative claims databaseMisuse of prescription opioidsCOVID-19 pandemicPublic health problemClinician recruitmentCase-control trialShort-term useAdministrative claims databaseMayo Clinic sitesCTSA programT57 Integrating MOUD in Non-Medical Community Organizations: Better Together MOUD (BT-MOUD)
Scott D, Schottenfeld R, Clover E, Curry K, Waites S, Cain G, Patton M, Pattrick M, Jordan D, Bulluck K, Chawarski M. T57 Integrating MOUD in Non-Medical Community Organizations: Better Together MOUD (BT-MOUD). Drug And Alcohol Dependence 2025, 267: 111825. DOI: 10.1016/j.drugalcdep.2024.111825.Peer-Reviewed Original ResearchBarriers and Facilitators for Engaging and Retaining Black Persons in Medications for Opioid Use Disorder (MOUD)
Schottenfeld R, Scott D, Medlock M, Waites S, Brown I, Borba C, Patton M, Pattrick M, Cain G, Williams C, Magidson J, Chawarski M. Barriers and Facilitators for Engaging and Retaining Black Persons in Medications for Opioid Use Disorder (MOUD). Drug And Alcohol Dependence 2025, 267: 112232. DOI: 10.1016/j.drugalcdep.2024.112232.Peer-Reviewed Original ResearchConceptsM80 Temporal Trends in NGO-based Supportive Services and HIV Rates Among PWID in Malaysia Between 2012 and 2022
Kasinather V, Khan S, Abdullah M, Yusoff N, Jalil J, Schottenfeld R, Chawarski M. M80 Temporal Trends in NGO-based Supportive Services and HIV Rates Among PWID in Malaysia Between 2012 and 2022. Drug And Alcohol Dependence 2025, 267: 111674. DOI: 10.1016/j.drugalcdep.2024.111674.Peer-Reviewed Original ResearchConcepts
Academic Achievements & Community Involvement
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Activities
activity Substance abuse treatment
11/01/2010 - 10/31/2017ResearchDetailsWuhan, Hubei, ChinaAbstract/SynopsisA study entitled "Behavioral Drug and HIV Risk Reduction Counseling with MMT in China" will provide critical data regarding the efficacy for reducing drug-and sex-related HIV transmission risk behaviors, as well as improving MMT outcomes and patient functioning of two transportable counseling models, behavioral drug and HIV risk reduction counseling (BDRC) and educational counseling (EC) as compared with the current standard of care model in MMT in China.
activity Heroin Dependence
01/01/2008 - 10/31/2017ResearchDetailsTehran, Tehran Province, Iran; Muar, Johor, MalaysiaAbstract/SynopsisProfessor Schottenfeld has established research projects in Malaysia and Iran which are aimed at evaluating treatments for heroin or other opiate dependence and are comparing the efficacy of maintenance treatment with buprenorphine or naltrexone.
activity Substance abuse treatment
01/01/2010 - 06/30/2017ResearchDetailsSaint Petersburg, St.-Petersburg, RussiaAbstract/SynopsisA study entitled "Naltrexone and Behavioral Drug and HIV Risk Reduction Counseling in Russia" will examine the effects of combining behavioral therapy with naltrexone pharmacotherapy for the treatment of opiate dependence and reduction of HIV risks in opiate dependent individuals in St. Petersburg, Russia.
activity Prevention of HIV Infection among Opiate Dependent Injectors - Phase III Randomized Controlled Trial to Evaluate the Efficacy of buprenorphine/naloxone drug treatment in p
01/01/2008 - 09/30/2015ResearchDetailsBeijing, China; Chiang Mai, จ.ร้อยเอ็ด, Thailand; Nanning, Guangxi, China +1 moreAbstract/SynopsisThe purpose of the study is to determine the efficacy of a drug treatment intervention (buprenorphine/naloxone) in the prevention of HIV transmission among opiate dependent injectors by reducing drug use and associated risk behaviors. URL: http://www.hptn.org/research_studies/hptn058.asp
activity Teaching and research collaboration
09/01/2010 - PresentResearchDetailsTaipei, Taiwan
Honors
honor Honorary Guest Professorship
09/01/2015International AwardCentral South University, Changsha, ChinaDetailsChinahonor International Program Award of Excellence in International Collaborative Research
06/14/2014National AwardNational Institute on Drug Abuse (NIDA)DetailsUnited Stateshonor Honorary Guest Professorship
10/10/2008International AwardCenter for Disease Prevention and Control, Wuhan, ChinaDetailsChina
News
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News
- July 16, 2025
Improving Opioid Use Disorder Treatment After Emergency Department Visits
- June 06, 2024Source: Natural Product Research
Phytochemical Analysis of Water and Ethanol Liquid Extracts Prepared Using Freshly Harvested Leaves of Mitragyna Speciosa (Korth.)
- December 13, 2022
Department of Emergency Medicine Congratulates Four Faculty on Recent Promotions
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Psychiatry
CMHC/SAC, 34 Park Street
New Haven, CT 06519
United States