Adjunct Faculty
Adjunct faculty typically have an academic or research appointment at another institution and contribute or collaborate with one or more School of Medicine faculty members or programs.
Adjunct rank detailsTheddeus Iheanacho, MBBS, DTM&H
Affiliated Faculty, Yale Institute for Global HealthDownloadHi-Res Photo
About
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Titles
Affiliated Faculty, Yale Institute for Global Health; Director, Yale Global Mental Health, Psychiatry; Director, Global Mental Health Promotion Program, Yale School of Public Health
Appointments
Psychiatry
Associate Professor AdjunctPrimary
Other Departments & Organizations
- All Institutions
- Division of Addictions
- Global Mental Health Promotion Program
- Psychiatry
- The HAPPINESS Project
- Yale Institute for Global Health
- Yale Ventures
Education & Training
- Fellow
- Yale University (2012)
- Resident
- Nassau University Medical Center (2011)
- Psychiatric Registrar
- Trinity College, Dublin (2007)
- DTM&H
- Royal College of Surgeons (2003)
- MBBS
- Abia State University (1998)
Research
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Overview
Medical Research Interests
Behavior, Addictive; Health Care; Psychiatry and Psychology
Public Health Interests
Global Health; Substance Use, Addiction; Mental Health; Health Care Management; Health Equity, Disparities, Social Determinants and Justice; Health Systems Reform
ORCID
0000-0002-7538-3611
Research at a Glance
Yale Co-Authors
Frequent collaborators of Theddeus Iheanacho's published research.
Publications Timeline
A big-picture view of Theddeus Iheanacho's research output by year.
Elina A. Stefanovics, PhD
Robert Rosenheck, MD
Charles C Dike, FRCPsych, MBChB, MPH
Angela Haeny, PhD
Asti Jackson, PhD
Yang Jae Lee, MD
35Publications
370Citations
Publications
2026
Integrating Medications for Addiction Treatment into Assertive Community Treatment Teams: A Pilot Feasibility Study
Iheanacho T, Ives M, Lin H, Rodis E, DeLuca D, Dike C. Integrating Medications for Addiction Treatment into Assertive Community Treatment Teams: A Pilot Feasibility Study. Community Mental Health Journal 2026, 1-10. PMID: 41739289, DOI: 10.1007/s10597-026-01602-z.Peer-Reviewed Original ResearchConceptsAssertive community treatmentSubstance use disorder screeningAssertive community treatment teamsSubstance use disordersCommunity mental health care settingsProspective quasi-experimental study designCommunity mental health settingsMental health care settingsIdentification of substance use disordersQuasi-experimental study designAssertive community treatment clientsPersistent mental illnessMental health settingsHealth care settingsAddiction treatmentCommunity treatment teamsClinical effectiveness trialIntervention fidelityAccessing CareHealth settingsCare settingsMental illnessIntervention protocolEffectiveness trialCommunity treatment
2025
Interventions Integrating Mental Health Services Into HIV Care in Africa; a Scoping Review
Nwogwugwu C, Favor C, Fu Y, Iheanacho T. Interventions Integrating Mental Health Services Into HIV Care in Africa; a Scoping Review. International Journal Of Public Health 2025, 70: 1608137. PMID: 40692722, PMCID: PMC12277799, DOI: 10.3389/ijph.2025.1608137.Peer-Reviewed Original ResearchCitationsMeSH Keywords and ConceptsConceptsMental healthHIV careMH servicesInclusion criteriaAdherence to antiretroviral therapyHIV care settingsMental health servicesStepped-care modelPRISMA-ScR guidelinesNon-pharmacological approachesMH needsCare settingsTask-sharingHealth servicesScoping ReviewMH disordersMH interventionsIntervention typeTargeting depressionMH symptomsAfrican settingSystematic searchPatient outcomesTarget populationIntervention
2024
Editorial: Evidence on the benefits of integrating mental health and HIV into packages of essential services and care
Abiodun O, Iheanacho T, Lawal S. Editorial: Evidence on the benefits of integrating mental health and HIV into packages of essential services and care. Frontiers In Reproductive Health 2024, 6: 1454453. PMID: 39069999, PMCID: PMC11272645, DOI: 10.3389/frph.2024.1454453.Peer-Reviewed Original ResearchCitationsAltmetricExperiences of Stigma and Discrimination Compounded by Intersecting Identities among Individuals Receiving Medication for Opioid Use Disorder.
Nwanaji-Enwerem U, Redeker N, O’Connell M, Barry D, Iheanacho T, Knobf T, Scheinost D, Wang K, Yaggi K, Sadler L. Experiences of Stigma and Discrimination Compounded by Intersecting Identities among Individuals Receiving Medication for Opioid Use Disorder. Journal Of Health Care For The Poor And Underserved 2024, 35: 94-115. PMID: 38661862, PMCID: PMC12908579, DOI: 10.1353/hpu.2024.a919810.Peer-Reviewed Original ResearchCitationsConceptsOpioid use disorderExperiences of stigmaIndividuals experience stigmaMarginalized social positionsIdentity of peopleUse disorderIntersectional identitiesMarginalized identitiesSupport interventionsSocial positionQualitative findingsStigmaNegative experiencesNortheast United StatesUnited StatesImprove outcomesIdentityTreatment centersMOUDIndividual vulnerabilityMedicationPeopleDiscriminationIndividualsIntegrating mental health into primary care in Nigeria: Implementation outcomes and clinical impact of the HAPPINESS intervention
Iheanacho T, Chu C, Aguocha C, Nwefoh E, Dike C. Integrating mental health into primary care in Nigeria: Implementation outcomes and clinical impact of the HAPPINESS intervention. Cambridge Prisms Global Mental Health 2024, 11: e9. PMID: 38390244, PMCID: PMC10882178, DOI: 10.1017/gmh.2024.4.Peer-Reviewed Original ResearchCitationsAltmetricConceptsPost-interventionMental healthScale-up mental health servicesPatient Health Questionnaire scoresPrimary health care centersEffect sizeMental health servicesHealth care centersTechnology-supported interventionsStatistically significant reductionQuasi-experimental designPrimary careIntervention implementationImplementation outcomesHealth servicesHealth actionsCommunity-BasedBrief Psychiatric Rating Scale scoresQuestionnaire scoresSignificant reductionPsychiatric Rating Scale scoresCare centerPsychiatric problemsHappiness interventionsHealthPerceptions of the COVID-19 Vaccine and Willingness to Receive Vaccination among Health Workers in Nigeria: A Cross-sectional Study.
Isiguzo G, Stefanovics E, Unamba N, Mbam T, Anyaehie U, Chukwu C, Anyaehie U, Osy-Eneze C, Ibezim E, Okoro U, Njoku P, Adimekwe A, Ibediro K, Stefanovics G, Iheanacho T. Perceptions of the COVID-19 Vaccine and Willingness to Receive Vaccination among Health Workers in Nigeria: A Cross-sectional Study. Nigerian Journal Of Clinical Practice 2024, 27: 102-108. PMID: 38317042, DOI: 10.4103/njcp.njcp_537_23.Peer-Reviewed Original ResearchCitationsMeSH Keywords and ConceptsConceptsHealthcare workersConfidence of healthcare workersPublic health effortsCross-sectional surveyCOVID-19 vaccine hesitancyVaccine uptakeCross-sectional studyTertiary care settingIndependent t-testYounger healthcare workersHealth workersCare settingsChi-square (c2) testIncrease vaccine uptakeHealth effortsHealthcare settingsVaccine hesitancyClinical contactReceiving vaccinesVulnerable populationsCOVID-19Pharmacy workersCOVID-19 vaccineClinical laboratory professionalsLaboratory professionals
2023
Twelve-month outcomes of a destigmatizing theatrical intervention in rural Uganda
Lee Y, Christ R, Blackwell S, Rauben K, Krause A, Monnig E, Ssekalo I, Iheanacho T, Rosenheck R. Twelve-month outcomes of a destigmatizing theatrical intervention in rural Uganda. Current Psychology 2023, 43: 14676-14685. DOI: 10.1007/s12144-023-05427-x.Peer-Reviewed Original ResearchCitationsAltmetricConceptsMental illness stigmaIllness stigmaTwelve-month outcomesLow-income settingsLong-term effectivenessMental health stigmaPrimary outcomeStudy participantsHealth stigmaRural UgandaConfidence intervalsInterventionEffect sizeMonthsOutcomesAverage improvementStigmaAcceptance ScaleParticipantsFollowBaselineWeeksAddressing the unmet mental health needs of people living with HIV: a scoping review of interventions in sub-Saharan Africa
Chukwuorji J, Ezeonu N, Ude N, Itanyi I, Eboreime E, Kung J, Dennett L, Olawepo J, Iheanacho T, Ogidi A, Rositch A, Nonyane B, Bass J, Ojo T, Ikpeazu A, Ezeanolue E. Addressing the unmet mental health needs of people living with HIV: a scoping review of interventions in sub-Saharan Africa. AIDS Care 2023, 35: 1677-1690. PMID: 36803172, DOI: 10.1080/09540121.2023.2176428.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsMental health needsMental health interventionsCognitive behavioral therapyHealth interventionsHealth needsUnmet mental health needsAdverse mental health conditionsMental health conditionsPreferred Reporting ItemsReview of interventionsMeta-Analyses extensionHospital settingLanguage of publicationReporting ItemsSystematic reviewPLWHBehavioral therapyLarge burdenHIVMental healthHealth conditionsInterventionSuch interventionsPeer-reviewed articlesReporting guidelines
2022
Evaluation of a pilot, community-led mental illness de-stigmatization theater intervention in rural Uganda
Lee Y, Rauben K, Liu C, Kim R, van der Velde N, Taylor C, Walsh A, Asasira M, Katongole I, Hatfield-King J, Blackwell S, Iheanacho T, Christ R, Ssekalo I. Evaluation of a pilot, community-led mental illness de-stigmatization theater intervention in rural Uganda. BMC Psychiatry 2022, 22: 794. PMID: 36526984, PMCID: PMC9756628, DOI: 10.1186/s12888-022-04441-w.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsMental illnessMental health stigmaBusoga regionHealth stigmaMental health careIll patientsMiddle-income countriesTreatment-seeking attitudesStudy's primary objectivePrimary objectiveConclusionThis studyLarger studyIllnessRural UgandaHealth careRural areasSignificant increaseDestigmatization campaignsStructured questionnaireEastern UgandaInterventionStigmaFocus groupsTreatmentMajor barrierOverview of Satellite Communications and its Applications in Telemedicine for the underserved in Nigeria: A case study
Lawal L, Aibinu A, Chris C, Udoyen U, Iheanacho T, Jaafar A, Ibrahim I. Overview of Satellite Communications and its Applications in Telemedicine for the underserved in Nigeria: A case study. 2022, 00: 1-10. DOI: 10.1109/iceccme55909.2022.9988286.Peer-Reviewed Original ResearchCitations
Academic Achievements & Community Involvement
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Activities
activity Yale University
10/27/2016 - PresentCommitteesFaculty MemberDetailsClinical Skills Assessment Committee, School of Medicineactivity Yale University
08/15/2017 - PresentCommitteesFaculty MemberDetailsMedical Students Education Committee, Department of Psychiatryactivity Behavioral Health in Emergency Departments
01/01/2021 - PresentResearchDetailsNairobi, Nairobi County, KenyaCollaboratorsactivity The HAPPINESS Project
04/09/2018 - PresentResearchDetailsOwerri, IM, NigeriaCollaborators- Dr. Emeka NwefohImo State University Teaching Hospital
- Dr. Chinyere AguochaImo State University Teaching Hospital
Abstract/SynopsisIntegrating mental health in primary care in Imo State, Nigeria
activity Mental Health Services In Nigeria: Opportunities for Improvement
07/18/2014 - 07/18/2014OtherScientific ConferenceDetailsAnaheim, CA, United StatesSponsored by Association of Nigerian Physicians in the Americas (ANPA)Abstract/SynopsisImproving access to mental health care using existing infrastructures in resource-limited settings
Honors
honor Hecht Faculty Network Award
05/19/2020Yale University AwardDetailsUnited Stateshonor Irma Bland Certificate of Excellence in Teaching Residents
01/12/2017National AwardAmerican Psychiatric AssociationDetailsUnited Stateshonor Yale Clinical Innovations in Psychiatry
11/30/2014Yale School of Medicine AwardDetailsUnited States
News
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News
- December 19, 2023
HAPPINESS Project Expanding Services to People Living With HIV/AIDS
- April 26, 2022
Yale Psychiatry, Yale Global Mental Health Program Launch Training Initiative in Nigeria
- October 13, 2021
NIH Funds $11.8 Million Research Center at Yale on Opioid Use Disorder, Opioid Misuse, and Chronic Pain
- August 25, 2021
Global Mental Health Program Seminar Series Receives Award from Kempf Memorial Fund
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