Alan E. Greenberg

Alan E. Greenberg

Alan E. Greenberg

M.D., M.P.H.

Professor, Department of Epidemiology

School: Milken Institute School of Public Health

Department: Epidemiology


Office Phone: 202-994-0612
950 New Hampshire Avenue, Office: 502 - Floor 5 Washington DC 20052

Alan E. Greenberg is a Professor in the Department of Epidemiology in the GW Milken Institute School of Public Health, and a Professor of Medicine and Microbiology, Immunology and Tropical Medicine in the GW School of Medicine and Health Sciences.

Professor Greenberg served as the Chair of the Department of Epidemiology (formerly Epidemiology and Biostatistics) from 2005-2022. His primary focus is on the epidemiology of HIV and other infectious diseases, and he has developed numerous multidisciplinary initiatives with academic, community and government partners in Washington DC. Currently, Dr. Greenberg is:

  • Director, District of Columbia Center for AIDS Research (DC CFAR)

  • Senior Co-Investigator, DC Cohort

  • Secretariat, DC Partnership for AIDS Progress (PFAP)

  • Director, GW - Elizabeth Glaser Pediatric AIDS Foundation (EGPAF) Partnership

Prior to joining the GWSPH, Dr. Greenberg served as a USPHS Commissioned Corps Officer at the Centers for Disease Control and Prevention from 1985-2005, where he provided scientific leadership for domestic and international HIV epidemiologic research. He served as the director of CDC's HIV research station in Cote d'Ivoire from 1993-1997, and Chief of the HIV Epidemiology Branch from 1998-2005.  He received his MD from GW School of Medicine in 1982 and his MPH from the Harvard School of Public Health in 1999. He was the recipient of the American Public Health Hero Award from Research America! in 2008, the Alvan R. Feinstein Award for Clinical Epidemiology from the American College of Physicians in 2015, and the Sizanani Award from Global Camps Africa in 2018.



Infectious Disease

Underserved Populations

Undergraduate Education: Amherst College, Amherst, MA, Bachelor of Arts, magna cum laude, 1978

Medical Education: George Washington University, Washington, DC, Doctor of Medicine, 1982

Graduate Education: Harvard School of Public Health, Boston, MA, Masters in Public Health, 1999

Course Director, PubH 6255, Organizational Responses to the HIV/AIDS Epidemic Course

Member, National Advisory Mental Health Council (NAMHC), National Institute of Mental Health (NIMH), 2017 - 

Advisory Council Representative, Office of AIDS Research Advisory Council (OARAC), National Institutes of Health (NIH), 2017 - 

  • Director of the NIH-supported District of Columbia Center for AIDS Research (DC CFAR)
  • Principal Investigator of Public Health Partnerships between GW and the District of Columbia Department of Health and the Elizabeth Glaser Pediatric AIDS Foundation
  • Senior Co-Investigator of the NIH-supported DC Cohort and the GW HIV Prevention Trials Network (HPTN) Clinical Research Site (CRS)
  • Secretariat for the NIH-DC DOH Partnership for AIDS Progress (PFAP)

Magnus M, Kuo I, Shelley K, Rawls A, Peterson J, Montanez L, West-Ojo T, Hader S, Hamilton F, Greenberg AE.  Risk factors driving the emergence of a generalized heterosexual HIV epidemic in Washington, District of Columbia networks at risk.  AIDS 2009; 23:1277-1284.


Greenberg AE, Hader SL, Masur H, Young AT, Skillicorn J, Dieffenbach CW.  Fighting HIV/AIDS in Washington DC.  Health Affairs 2009; 28:1677-1687.


Celletti F, Wright A, Palen J, Frehywot S, Markus A, Greenberg AE, Teixeira de Aguiar RA, Campos F, Buch E, Samb B. Can the deployment of community health workers for the delivery of HIV services represent an effective and sustainable response to healthcare worker shortages? Results of a multicountry study. AIDS 2010; 24 (suppl 1):S45-S57.


Magnus M, Kuo I, Phillips G, Shelley K, Rawls A, Peterson J, West-Ojo T, Hader S, Greenberg AE. Elevated HIV Prevalence despite Lower Rates of Sexual Risk Behaviors among Black Men in the District of Columbia Who Have Sex with Men. AIDS Patient Care and STDs 2010; 10:615-22


Kuo I, Greenberg AE, Magnus M, Phillips GL, Rawls AL, Peterson JA, Hamilton F, West-Ojo T, Hader S. High Prevalence of Substance Use Among Heterosexuals Living in Communities With High Rates of AIDS and Poverty in Washington, DC.  Drug Alcohol Depend 2011 Feb 11. [Epub ahead of print].


Phillips G, Magnus M, Kuo I, Shelley K, Rawls A, West-Ojo T, Hader S and Greenberg AE. Oral versus anal sex at last encounter – behavioral differences among men who have sex with me in the District of Columbia.  AIDS Care 2011; DOI:10.1080/09540121. 2011.630365. 


Castel AD, Befu M, Willis A, Griffin A, West T, Hader S, Greenberg AE. Use of the Community Viral Load as a Population-based Biomarker of HIV Burden, Washington DC.  AIDS 2011; 25:000-000.  


Castel AD, Magnus M, Peterson J, Anand K, Wu C, Martin M, Sansone M, Rocha N, Jolaosho T, West T, Hader S, Greenberg AE.  Implementing a Novel Citywide Rapid HIV Testing Campaign in Washington, DC.: Findings and Lessons Learned. Public Health Reports 2012; 127:422-431.  


Magnus M, Kuo I, Phillips G, Shelley K, Rawls A, Peterson J, West-Ojo T, Kamanu-Elias N, Hamilton F, Wood A, Greenberg AE . Differing HIV Risks and Prevention Needs among Men and Women Injection Drug Users (IDU) in the District of Columbia. Journal of Urban Health 2012; doi:10.1007/s11524-012-9687-5.


Castel AD, Willis A, Griffin A, West T, Greenberg AE. Response to letter ‘Mapping Community Viral Load and Social Boundaries: Geographies of Stigma and Exclusion’. Invited letter of response. AIDS 2012. 26:1577–1584.


Phillips G, Magnus M, Kuo I, Shelley KD, Rawls A, West-Ojo T, Jia Y, Opuku J, Greenberg AE.  Correlates of frequency of HIV testing among men who have sex with men in Washington, DC.  AIDS Care 2013; DOI:10.1080/09540121.2013.774314.


Kuo I, Magnus M, Phillips G, Castel A, Opoku J, Peterson J, Jia Y, West T, Greenberg A.  HIV Testing Among Heterosexuals at Elevated Risk for HIV in the District of Columbia: Has Anything Changed Over Time? AIDS and Behavior 2013; DOI 10.1007/s10461-013-0616-8.


Greenberg AE, Purcell DW, Gordon CM, Flores S, Grossman C, Fisher HH, Barasky RJ. NIH Support of Centers for AIDS Research and Department of Health Collaborative Public Health Research: Advancing CDC’s Enhanced Comprehensive HIV Planning Project.  JAIDS 2013; 64: Supplement 1:S1-S6.


Castel AD, Greenberg AE, Befus M, Willis S, Samala R, Rocha N, Griffin A, West T, Hader S.  Temporal Association between Expanded HIV Testing and Improvements in Population-Based HIV/AIDS Clinical Outcomes, District of Columbia.  AIDS Care 2013; DOI:10.1080/09540121.2013.855296.  


Magnus M, Phillips G 2nd, Kuo I, Peterson J, Rawls A, West-Ojo T, Jia Y, Opoku J, Greenberg AE. HIV Among Women in the District of Columbia: An Evolving Epidemic? AIDS Behav. 2013 May 24. [Epub ahead of print] PMID: 23702704


Phillips G 2nd, Magnus M, Kuo I, Rawls A, Peterson J, West-Ojo T, Jia Y, Opoku J, Greenberg AE. Correlates of Group Sex Among a Community-Based Sample of Men Who Have Sex With Men (MSM) in Washington, DC.AIDS Behav. 2013 May 23. [Epub ahead of print] PMID: 23700223


Phillips G 2nd, Magnus M, Kuo I, Rawls A, Peterson J, Montanez L, West-Ojo T, Jia Y, Opoku J, Greenberg AE. Childhood Sexual Abuse and HIV-Related Risks among Men Who Have Sex with Men in Washington, DC.  Archives of Sexual Behavior 2014.  DOI: 10.1007/s10508-014-0267-5


Phillips G 2nd, Magnus M, Kuo I, Rawls A, Peterson J, Jia Y, Opoku J, Greenberg AE. Use of Geosocial Networking (GSN) Mobile Phone Applications to Find Men for Sex by Men Who Have Sex with Men (MSM) in Washington, DC. AIDS Behav 2014; DOI 10.1007/s10461-014-0760-9. 


Castel AD, Magnus M, Greenberg AE. Pre-exposure Prophylaxis for Human Immunodeficiency Virus: The Past, Present, and Future. Infect Dis Clin N Am 2014; 28: 563–583.


Castel AD, Magnus M, Greenberg AE. Update on the Epidemiology and Prevention of HIV/AIDS in the USA. Current Epidemiology Reports 2015, 2, 2:110-119. http://10.1007/s40471-015-0042-8


Greenberg AE, Purcell DW, Gordon CM, Barasky RJ, del Rio C. Addressing the Challenges of the HIV Continuum of Care in High-Prevalence Cities in the United States. JAIDS 2015; 69 suppl 1:S1-S7. 


Castel AD, Tang W, Peterson J, Mikre M, Parenti D, Elion R, Wood A, Kuo I, Willis S, Allen S, Kulie P, Ikwuemesi I, Dassie K, Dunning J, Saafir-Callaway B, Greenberg A. Sorting Through the Lost and Found: Are Patient Perceptions of Engagement in Care Consistent with Standard Continuum of Care Measures?  JAIDS 2015; 69 suppl 1:S44-S55. 


Greenberg AE, Hays H, Castel AD, Subramanian T,  Happ LP,  Jaurretche M, Binkley J, Kalmin MM, Wood K, Hart R. Development of a large urban longitudinal HIV clinical cohort using a web-based platform to merge electronically and manually abstracted data from disparate medical record systems: technical challenges and innovative solutions. Journal of the Medical Informatics Association 2015; DOI:


Kuo I, Olsen H, Patrick R, Phillips G, Magnus M, Opoku J, Rawls A, Peterson J, Hamilton F, Kharfen M, Greenberg A.  Willingness to Use HIV Pre-Exposure Prophylaxis Among Community-Recruited, Older People Who Inject Drugs in Washington, DC. Drug Alc Depend.  Drug and Alcohol Dependence 2016; Drug Alcohol Depend. 2016 Mar 15. pii: S0376-8716(16)00144-7. doi: 10.1016/j.drugalcdep.2016.02.044. [Epub ahead of print].  


Levy ME, Greenberg AE, Hart R, Happ LP, Hadigan C, Castel AD on behalf of the DC Cohort Executive Committee. High Burden of Metabolic Comorbidities in a Citywide Cohort of HIV Outpatients: Evolving Health Care Needs of People Aging with HIV in Washington, DC. HIV Medicine 2017; in press.


Greenberg AE, Gordon CM, Purcell DW. Promotion of research on the HIV continuum of care in the United States: the CFAR HIV continuum of care/ECHPP working group.  J Acquir Immune Defic Syndr 2017; 74:S75-S80. 


Patrick R, Forrest D, Cardenas G, Opoku J, Magnus M, Phillips G, Greenberg A, Metsch L, Kharfen M, LaLota M, Kuo I. Awareness, Willingness, and Use of Pre-exposure Prophylaxis among Men Who Have Sex with Men in Washington, DC and Miami-Dade County, FL: National HIV Behavioral Surveillance, 2011 and 2014. J Acquir Immune Defic Syndr 1 July 2017 - Volume 75 - Issue - p S375–S382 



Patrick R, Greenberg A, Magnus M, Opoku J, Kharfen M, Kuo I.Development of an HIV Testing Dashboard to Complement the HIV Care Continuum among MSM, PWID, and Heterosexuals in Washington, DC, 2007-2015. J Acquir Immune Defic Syndr 1 July 2017 - Volume 75 - Issue - p S397–S407. doi: 10.1097/QAI.0000000000001417


Greenberg AE.  Fostering a public health of consequence. (Invited Editorial)  AJPH 2017; 107:7:1058-1059.    


Levy ME, Patrick R, Gamble J, Rawls A, Opoku J, Magnus M, Kharfen M, Greenberg AE, Kuo I. Willingness of community-recruited men who have sex with men in Washington, DC to use long-acting injectable HIV pre-exposure prophylaxis. PLoS One. 2017; 12(8): e0183521. doi: 10.1371/journal.pone.0183521.


Castel AD, Terzian A, Hart R, Rayeed N, Kalmin MM, Young H, Greenberg AE; DC Cohort Executive Committee. Use of national standards to monitor HIV care and treatment in a high prevalence city-Washington, DC. PLoS One. 2017 Oct 5;12(10):e0186036. doi: 10.1371/journal.pone.0186036. eCollection 2017. PMID: 28982127 


Pérez-Losada M, Castel AD, Lewis B, Kharfen M, Cartwright CP, Huang B, Maxwell T, Greenberg AE, Crandall KA; DC Cohort Executive Committee. Characterization of HIV diversity, phylodynamics and drug resistance in Washington, DC. PLoS One. 2017 Sep 29;12(9):e0185644. doi: 10.1371/journal.pone.0185644. eCollection 2017. PMID: 28961263


Levy ME, Greenberg AE, Magnus M, Younes N, Castel A. Evaluation of Statin Eligibility, Prescribing Practices, and Therapeutic Responses Using ATP III, ACC/AHA, and NLA Dyslipidemia Treatment Guidelines in a Large Urban Cohort of HIV-Infected Outpatients., AIDS patient care and STDs, 2018 Feb, 32, 58-69, 10.1089/apc.2017.0304 [doi] 


Castel AD, Terzian A, Opoku J, Happ LP, Younes N, Kharfen M, Greenberg A. Defining Care Patterns and Outcomes Among Persons Living with HIV in Washington, DC: Linkage of Clinical Cohort and Surveillance Data. JMIR public health and surveillance, 2018 Mar, 4, e23, v4i1e23 [pii], 10.2196/publichealth.9221 [doi] 


Terzian AS, Younes N, Greenberg AE, Opoku J, Hubbard J, Happ LP, Kumar P, Jones RR, Castel AD. Identifying Spatial Variation Along the HIV Care Continuum: The Role of Distance to Care on Retention and Viral Suppression. AIDS and Behavior, 2018 Mar, 10.1007/s10461-018-2103-8 [doi], 10.1007/s10461-018-2103-8 [pii] 


Levy ME, Greenberg AE, Magnus M, Younes N, Castel A; DC Cohort Executive Committee., Immunosuppression and HIV Viremia Associated with More Atherogenic Lipid Profile in Older People with HIV. AIDS Res Hum Retroviruses. 2019 Jan;35(1):81-91. doi: 10.1089/AID.2018.0145. Epub 2018 Nov 27. PMID: 30353737, 2018 


Jair K, McCann CD, Reed H, Castel AD, Pérez-Losada M, Wilbourn B, Greenberg AE, Jordan JA; DC Cohort Executive Committee. Validation of publicly-available software used in analyzing NGS data for HIV-1 drug resistance mutations and transmission networks in a Washington, DC, Cohort. PLoS One. 2019 Apr 9;14(4):e0214820. journal.pone.0214820. eCollection 2019. PMID_ 30964884, 2019 Page 1 of 15


Anne K Monroe, Lindsey P Happ, Nabil Rayeed, Yan Ma, Maria J Jaurretche, Arpi S Terzian, Kevin Trac, Michael A Horberg, Alan E Greenberg, Amanda D Castel. Clinic-level factors associated with time to antiretroviral initiation and viral suppression in a large urban cohort. Clinical Infectious Diseases, ciz1098,; 08 November 2019


Jenevieve Opoku, Rupali K. Doshi, Amanda D. Castel, Ian Sorensen, Michael Horberg, Adam Allston, Michael Kharfen, Alan E. Greenberg. Comparing clinical outcomes of persons living with HIV by enrollment status in a large longitudinal HIV cohort study, Washington, DC. JMIR 2020. DOI: 10.2196/preprints.16061.