Theddeus Iheanacho, MBBS, DTM&H

Affiliated Faculty, Yale Institute for Global Health

DownloadHi-Res Photo

Additional Titles

Director, Yale Global Mental Health, Psychiatry

Director, Global Mental Health Promotion Program, Yale School of Public Health

Contact Info

theddeus.iheanacho@yale.edu

About

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

Departments & Organizations

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

Overview

Medical Research Interests

Behavior, Addictive; Health Care; Psychiatry and Psychology

Public Health Interests

Global Health; Health Care Management; Mental Health; Substance Use, Addiction; 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.

Elina A. Stefanovics, PhD
View Full Profile
View 7 Common Publications
Charles C Dike, FRCPsych, MBChB, MPH
View Full Profile
View 4 Common Publications
Robert Rosenheck, MD
View Full Profile
View 4 Common Publications
Angela Haeny, PhD
View Full Profile
View 2 Common Publications
Asti Jackson, PhD
View Full Profile
View 2 Common Publications
Ayana Jordan, MD, PhD
View Full Profile
View 2 Common Publications

Publications

2026

Rationale, design and methods of the Cul-CM study: a protocol for cultural adaptation of contingency management in adults with stimulant use disorder
Jegede O, Becker S, Iheanacho T, Bellamy C, Petrakis I, Kiluk B, Rash C. Rationale, design and methods of the Cul-CM study: a protocol for cultural adaptation of contingency management in adults with stimulant use disorder. BMJ Open 2026, 16: e120424. PMID: 42419893, PMCID: PMC13347902, DOI: 10.1136/bmjopen-2026-120424.
Peer-Reviewed Original Research
MeSH Keywords
Substance Use Disorders in Underserved and Historically Excluded Populations
Iheanacho T, Jordan A, Dike C. Substance Use Disorders in Underserved and Historically Excluded Populations. 2026, 359-378. DOI: 10.1007/978-3-032-24174-0_18.
Chapters
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, 62: 1164-1173. PMID: 41739289, DOI: 10.1007/s10597-026-01602-z.
Peer-Reviewed Original Research

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 Research
MeSH Keywords

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.
Commentaries, Editorials and Letters
Experiences 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 Research
Integrating 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 Research
Perceptions 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 Research
MeSH Keywords

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 Research
Digital Health Inclusion: A Pilot Study of Health Services Deployment Using Communications Satellite for the Underserved in Nigeria
Salami Lawal L, Alale A, Iheanacho T, Ali Ibrahim I, Udoyen U, Jafaar A, Davey G, Radwin Chatwin C, Musa Aibinu A, Nasir Sambo M. Digital Health Inclusion: A Pilot Study of Health Services Deployment Using Communications Satellite for the Underserved in Nigeria. British Journal Of Healthcare And Medical Research 2023, 10: 86-103. DOI: 10.14738/bjhmr.103.14715.
Peer-Reviewed Original Research

See All Publications

Academic Achievements & Community Involvement

Activities

activity
Yale University
10/27/2016 - PresentCommitteesFaculty Member
Details
activity
Yale University
08/15/2017 - PresentCommitteesFaculty Member
Details
activity
Behavioral Health in Emergency Departments
01/01/2021 - PresentResearch
Details
Nairobi, Nairobi County, Kenya
Collaborators
Christine Ngaruiya, MD, MSc, DTMH
activity
The HAPPINESS Project
04/09/2018 - PresentResearch
Details
Owerri, IM, Nigeria
Collaborators
Dr. Emeka NwefohImo State University Teaching Hospital
Dr. Chinyere AguochaImo State University Teaching Hospital
Abstract/Synopsis
Integrating mental health in primary care in Imo State, Nigeria
activity
Mental Health Services In Nigeria: Opportunities for Improvement
07/18/2014 - 07/18/2014OtherScientific Conference
Details

View full list of activities

Honors

honor
Hecht Faculty Network Award
05/19/2020Yale University Award
Details
honor
Irma Bland Certificate of Excellence in Teaching Residents
01/12/2017National AwardAmerican Psychiatric Association
Details
honor
Yale Clinical Innovations in Psychiatry
11/30/2014Yale School of Medicine Award
Details

News & Links

News

See All News

Related Links
- The HAPPINESS Project

Get In Touch

Contacts

theddeus.iheanacho@yale.edu

Appointment Number

203.874.0593

Additional Titles

Contact Info

Titles

Departments & Organizations

Education & Training

Overview

Medical Research Interests

Public Health Interests

ORCID

Research at a Glance

Yale Co-Authors

Elina A. Stefanovics, PhD

Charles C Dike, FRCPsych, MBChB, MPH

Robert Rosenheck, MD

Angela Haeny, PhD

Asti Jackson, PhD

Ayana Jordan, MD, PhD

Publications

2026

2025

2024

2023

Activities

Yale University

Yale University

Behavioral Health in Emergency Departments

The HAPPINESS Project

Mental Health Services In Nigeria: Opportunities for Improvement

Honors

Hecht Faculty Network Award

Irma Bland Certificate of Excellence in Teaching Residents

Yale Clinical Innovations in Psychiatry

News

Yale Psychiatry Faculty, Trainees Contribute to Book 'AAAP Review of Addiction Psychiatry'

HAPPINESS Project Expanding Services to People Living With HIV/AIDS

Yale Psychiatry, Yale Global Mental Health Program Launch Training Initiative in Nigeria

NIH Funds $11.8 Million Research Center at Yale on Opioid Use Disorder, Opioid Misuse, and Chronic Pain

Related Links

Contacts