Joshua Barocas
Visiting Associate Professor, Medicine-Internal Medicine

Medical School:
  • MD, George Washington University School of Medicine and Health Sciences
Undergraduate School:
  • BA, Washington University in Saint Louis (MO)
  • University of Wisconsin Hospital and Clinics Program
  • University of Wisconsin Program, Chief Resident, Internal Medicine
  • Brigham and Women's Hospital/Massachusetts General Hospital/Harvard Medical School Program, Infectious Disease
Department: Medicine-Internal Medicine

Recognition & Awards

  • Herbert W. Nickens Faculty Fellowship, Association of American Medical Colleges (2019)

Research Interests

I lead an interdisciplinary research program that is specifically aimed at the goal of improving health outcomes for patients with infectious diseases including HIV and HCV, substance use disorders, and other vulnerable populations. My research, which uses clinical epidemiology, health economics, simulation modeling, and cost-effectiveness, informs clinical-decision making and health policy to answer clinically- and policy-relevant questions. I am engaged in research using these innovative methods to help understand the impact of and improve upon policies that affect people who use drugs infected with or at high risk for infections. My research is currently been funded by NIDA in the form of both a K01 and a DP2 award as well as multiple grants for which I am a Co-Investigator. I have also received NIAID, the Providence/Boston Center for AIDS Research (CFAR), the BU-CTSI, and the MGH Executive Committee on Research Fund for Medical Discovery. I currently serve as Director of the Health Economics and Modeling Core for the Massachusetts HEALing Communities Study, an NIH-funded grant to significantly reduce overdose. I am the previous recipient of the Charles A. King Trust Research Award, and the prestigious AAMC Herbert W. Nickens Faculty Fellowship Award, which recognizes a junior faculty member who demonstrates leadership potential in addressing inequity in health care. I have published my work and editorials in leading journals such as NEJM, Lancet Public Health, JAMA Internal Medicine, AJPH, Addiction, Clinical Infectious Diseases, and Annals of Internal Medicine. My work has been widely cited in the media, including the Boston Globe, U.S. News and World Report, and NPR.


  • (Visiting) Associate Professor of Medicine (2022)
    School of Medicine, Medicine


  • Barocas JA, Savinkina A, Adams J, Jawa R, Weinstein ZM, Samet JH, Linas BP. Clinical impact, costs, and cost-effectiveness of hospital-based strategies for addressing the US opioid epidemic: a modelling study. Lancet Public Health. 2022 Jan;7(1):e56-e64. PubMed PMID: 34861189
  • Barocas JA. 100-100-100: a new, ambitious treatment target to end the HIV and hepatitis C epidemics. Lancet Public Health. 2022 Jan 7. [Epub ahead of print] PubMed PMID: 35012712
  • Barocas JA, Morgan JR, Wang J, McLoone D, Wurcel A, Stein MD. Outcomes Associated With Medications for Opioid Use Disorder Among Persons Hospitalized for Infective Endocarditis. Clin Infect Dis. 2021 Feb 1;72(3):472-478. PubMed PMID: 31960025
  • Barocas JA. It's Not Them, It's Us: Hepatitis C Reinfection Following Successful Treatment Among People Who Inject Drugs. Clin Infect Dis. 2021 Apr 26;72(8):1401-1403. PubMed PMID: 32166311
  • Barocas JA, Eftekhari Yazdi G, Savinkina A, Nolen S, Savitzky C, Samet JH, Englander H, Linas BP. Long-term Infective Endocarditis Mortality Associated With Injection Opioid Use in the United States: A Modeling Study. Clin Infect Dis. 2021 Dec 6;73(11):e3661-e3669. PubMed PMID: 32901815
  • Barocas JA. Business Not as Usual - Covid-19 Vaccination in Persons with Substance Use Disorders. N Engl J Med. 2021 Jan 14;384(2):e6. PubMed PMID: 33378604
  • Komaromy M, Harris M, Koenig RM, Tomanovich M, Ruiz-Mercado G, Barocas JA. Caring for COVID's Most Vulnerable Victims: a Safety-Net Hospital Responds. J Gen Intern Med. 2021 Apr;36(4):1006-1010. PubMed PMID: 33469746
  • Barocas JA, Jacobson KR, Hamer DH. Addressing the COVID-19 Pandemic Among Persons Experiencing Homelessness: Steps to Protect a Vulnerable Population. J Gen Intern Med. 2021 May;36(5):1416-1417. PubMed PMID: 33532960
  • Linas BP, Savinkina A, Madushani RWMA, Wang J, Eftekhari Yazdi G, Chatterjee A, Walley AY, Morgan JR, Epstein RL, Assoumou SA, Murphy SM, Schackman BR, Chrysanthopoulou SA, White LF, Barocas JA. Projected Estimates of Opioid Mortality After Community-Level Interventions. JAMA Netw Open. 2021 Feb 1;4(2):e2037259. PubMed PMID: 33587136
  • Barocas JA, Choo EK. Housing Is an Essential Part of Health Care-"Treat 'Em and House 'Em". JAMA Netw Open. 2021 Mar 1;4(3):e210635. PubMed PMID: 33651106
  • Barocas JA, Gai MJ, White LF, Faretra D, Sachs K, Komaromy M. Implementation of a Recuperation Unit and Hospitalization Rates Among People Experiencing Homelessness With COVID-19. JAMA Netw Open. 2021 Mar 1;4(3):e212826. PubMed PMID: 33688963
  • Hadland SE, Bagley SM, Gai MJ, Earlywine JJ, Schoenberger SF, Morgan JR, Barocas JA. Opioid use disorder and overdose among youth following an initial opioid prescription. Addiction. 2021 Oct;116(10):2790-2800. PubMed PMID: 33739476
  • Jawa R, Stein MD, Anderson B, Liebschutz JM, Stewart C, Phillips KT, Barocas JA. Association of skin infections with sharing of injection drug preparation equipment among people who inject drugs. Int J Drug Policy. 2021 Aug;94:103198. PubMed PMID: 33744668
  • Epstein RL, Sperring H, Hofman M, Lodi S, White LF, Barocas JA, Bouton TC, Xiao Y, Hsu HE, Miller NS, Linas BP, Marathe JG. Time to SARS-CoV-2 PCR Clearance in Immunocompromising Conditions: Is Test-Based Removal From Isolation Necessary in Severely Immunocompromised Individuals?. Open Forum Infect Dis. 2021 Jun;8(6):ofab164. PubMed PMID: 34189164
  • Barocas JA, Earnest M. The Urgent Public Health Need to Develop "Crisis Standards of Housing": Lessons From the COVID-19 Pandemic. Am J Public Health. 2021 Jul;111(7):1207-1209. PubMed PMID: 34370530
  • Dunham K, McDonald J, Yousaf A, Barocas JA, Neill M, Noska A, Flanigan TP. Healthcare Providers' Views on Hepatitis C Testing and Counseling Among Sexual Partners of Hepatitis-C-Infected Persons: An Online Survey. Infect Dis Clin Pract (Baltim Md). 2021 May;29(3):e151-e153. PubMed PMID: 34447237
  • Barocas JA, Savinkina A, Lodi S, Epstein RL, Bouton TC, Sperring H, Hsu HE, Jacobson KR, Schechter-Perkins EM, Linas BP, White LF. Projected long-term impact of the COVID-19 pandemic on hepatitis C outcomes in the United States: a modelling study. Clin Infect Dis. 2021 Sep 9. [Epub ahead of print] PubMed PMID: 34499124
  • King CA, Englander H, Korthuis PT, Barocas JA, McConnell KJ, Morris CD, Cook R. Designing and validating a Markov model for hospital-based addiction consult service impact on 12-month drug and non-drug related mortality. PLoS One. 2021;16(9):e0256793. PubMed PMID: 34506517
  • Jawa R, Stein MD, Anderson B, Liebschutz JM, Stewart C, Phillips KT, Barocas JA. Behavioral Risk Factors for HIV Infection in Hospitalized Persons Who Co-use Stimulants and Opioids. AIDS Behav. 2021 Sep 12. [Epub ahead of print] PubMed PMID: 34510289
  • Grebely J, Collins AB, Artenie AA, Sutherland R, Meyer JP, Barocas JA, Falade-Nwulia O, Cepeda JA, Cunningham EB, Hajarizadeh B, Lafferty L, Lazarus JV, Bonn M, Marshall AD, Treloar C. Progress and remaining challenges to address hepatitis C, other infectious diseases, and drug-related harms to improve the health of people who use drugs. Int J Drug Policy. 2021 Oct;96:103469. PubMed PMID: 34610884
  • Barocas JA, Umar I, Praseuth A, Evans L, Zaller ND, Zielinski MJ. An Economic Analysis of the Cost of a Regional Crisis Stabilization Unit. J Correct Health Care. 2021 Nov 17. [Epub ahead of print] PubMed PMID: 34788552
  • Flam-Ross JM, Lown J, Patil P, White LF, Wang J, Perry A, Bailer D, McKenzie M, Thigpen A, Newman R, Lincoln M, Mckinney T, Bernson D, Barocas JA. Factors associated with opioid-involved overdose among previously incarcerated people in the U.S.: A community engaged narrative review. Int J Drug Policy. 2021 Dec 9;100:103534. [Epub ahead of print] PubMed PMID: 34896932
  • Barocas JA, Blackstone E, Bouton TC, Kimmel SD, Caputo A, Porter SJ, Walley AY. Prevalence of Covid-19 Infection and Subsequent Cohorting in a Residential Substance Use Treatment Program in Boston, MA. J Addict Med. 2020 Sep Oct;14(5):e261-e263. PubMed PMID: 32530889
  • Springer SA, Barocas JA, Wurcel A, Nijhawan A, Thakarar K, Lynfield R, Hurley H, Snowden J, Thornton A, Del Rio C. Federal and State Action Needed to End the Infectious Complications of Illicit Drug Use in the United States: IDSA and HIVMA's Advocacy Agenda. J Infect Dis. 2020 Sep 2;222(Suppl 5):S230-S238. PubMed PMID: 32877568
  • Barocas JA, Komaromy M, Haidar D, Barlam TF, Orr BL, Miller NS. Assessment of Oropharyngeal Specimens for Discontinuation of Transmission-Based COVID-19 Precautions. Open Forum Infect Dis. 2020 Sep;7(9):ofaa382. PubMed PMID: 32964067
  • Schranz A, Barocas JA. Infective Endocarditis in Persons Who Use Drugs: Epidemiology, Current Management, and Emerging Treatments. Infect Dis Clin North Am. 2020 Sep;34(3):479-493. PubMed PMID: 32782097
  • Barocas JA, Gai MJ, Amuchi B, Jawa R, Linas BP. Impact of medications for opioid use disorder among persons hospitalized for drug use-associated skin and soft tissue infections. Drug Alcohol Depend. 2020 Oct 1;215:108207. PubMed PMID: 32795883
  • Kimmel SD, Bazzi AR, Barocas JA. Integrating harm reduction and clinical care: Lessons from Covid-19 respite and recuperation facilities. J Subst Abuse Treat. 2020 Nov;118:108103. PubMed PMID: 32972644
  • Morgan JR, Wang J, Barocas JA, Jaeger JL, Durham NN, Babakhanlou-Chase H, Bharel M, Walley AY, Linas BP. Opioid overdose and inpatient care for substance use disorder care in Massachusetts. J Subst Abuse Treat. 2020 May;112:42-48. PubMed PMID: 32199545
  • Merchant E, Burke D, Shaw L, Tookes H, Patil D, Barocas JA, Wurcel AG. Hospitalization outcomes of people who use drugs: One size does not fit all. J Subst Abuse Treat. 2020 May;112:23-28. PubMed PMID: 32199542
  • Gaeta JM, De Las Nueces D, Munson DG, Barocas JA, Walsh KE. Case 21-2020: A 66-Year-Old Homeless Man with Covid-19. N Engl J Med. 2020 Jul 9;383(2):170-178. PubMed PMID: 32579806
  • Serota DP, Barocas JA, Springer SA. Infectious Complications of Addiction: A Call for a New Subspecialty Within Infectious Diseases. Clin Infect Dis. 2020 Feb 14;70(5):968-972. PubMed PMID: 31420651
  • Rubin EJ, Baden LR, Barocas JA, Morrissey S. Audio Interview: SARS-CoV-2 Vaccination and Vulnerable Populations. N Engl J Med. 2020 Dec 10;383(24):e143. PubMed PMID: 33296567
  • Aldridge AP, Barbosa C, Barocas JA, Bush JL, Chhatwal J, Harlow KJ, Hyder A, Linas BP, McCollister KE, Morgan JR, Murphy SM, Savitzky C, Schackman BR, Seiber EE, E Starbird L, Villani J, Zarkin GA. Health economic design for cost, cost-effectiveness and simulation analyses in the HEALing Communities Study. Drug Alcohol Depend. 2020 Dec 1;217:108336. PubMed PMID: 33152672
  • Min JE, Pearce LA, Homayra F, Dale LM, Barocas JA, Irvine MA, Slaunwhite AK, McGowan G, Torban M, Nosyk B. Estimates of opioid use disorder prevalence from a regression-based multi-sample stratified capture-recapture analysis. Drug Alcohol Depend. 2020 Dec 1;217:108337. PubMed PMID: 33049520
  • Barocas JA. Commentary on Jones et al. (2020): Using indirect estimation methods of drug use prevalence to address racial and ethnic health disparities. Addiction. 2020 Dec;115(12):2405-2406. PubMed PMID: 32822524
  • Barocas JA. Commentary on Irvine et al. (2019): Barriers to implementing a successful roadmap for preventing opioid-related overdose deaths. Addiction. 2019 Sep;114(9):1614-1615. PubMed PMID: 31321824
  • Barocas JA, Morgan JR, Fiellin DA, Schackman BR, Eftekhari Yazdi G, Stein MD, Freedberg KA, Linas BP. Cost-effectiveness of integrating buprenorphine-naloxone treatment for opioid use disorder into clinical care for persons with HIV/hepatitis C co-infection who inject opioids. Int J Drug Policy. 2019 Oct;72:160-168. PubMed PMID: 31085063
  • Barocas JA, Wang J, Marshall BDL, LaRochelle MR, Bettano A, Bernson D, Beckwith CG, Linas BP, Walley AY. Sociodemographic factors and social determinants associated with toxicology confirmed polysubstance opioid-related deaths. Drug Alcohol Depend. 2019 Jul 1;200:59-63. PubMed PMID: 31100636
  • Barocas JA, Saitz R. Being Explicit About Decisions: Prescribe Medications for Opioid Use Disorder on the Basis of Proven Effectiveness, Not Beliefs. Ann Intern Med. 2019 Jan 15;170(2):127-128. PubMed PMID: 30557444
  • Barocas JA. Actions to Integrate Treatment of Opioid and Infectious Disease Epidemics. Ann Intern Med. 2019 Apr 2;170(7):509. PubMed PMID: 30934073
  • Barocas JA, So-Armah K, Cheng DM, Lioznov D, Baum M, Gallagher K, Fuster D, Gnatienko N, Krupitsky E, Freiberg MS, Samet JH. Zinc deficiency and advanced liver fibrosis among HIV and hepatitis C co-infected anti-retroviral naïve persons with alcohol use in Russia. PLoS One. 2019;14(6):e0218852. PubMed PMID: 31246992
  • Barocas JA, White LF, Wang J, Walley AY, LaRochelle MR, Bernson D, Land T, Morgan JR, Samet JH, Linas BP. Estimated Prevalence of Opioid Use Disorder in Massachusetts, 2011-2015: A Capture-Recapture Analysis. Am J Public Health. 2018 Dec;108(12):1675-1681. PubMed PMID: 30359112
  • Barocas JA, Tasillo A, Eftekhari Yazdi G, Wang J, Vellozzi C, Hariri S, Isenhour C, Randall L, Ward JW, Mermin J, Salomon JA, Linas BP. Population-level Outcomes and Cost-Effectiveness of Expanding the Recommendation for Age-based Hepatitis C Testing in the United States. Clin Infect Dis. 2018 Aug 1;67(4):549-556. PubMed PMID: 29420742
  • Barocas JA, Beiser M, León C, Gaeta JM, O'Connell JJ, Linas BP. Experience and Outcomes of Hepatitis C Treatment in a Cohort of Homeless and Marginally Housed Adults. JAMA Intern Med. 2017 Jun 1;177(6):880-882. PubMed PMID: 28395004
  • Barocas JA, Linas BP. Editorial Commentary: Decision Science at Work: The Case of Hepatitis C Virus Postexposure Prophylaxis. Clin Infect Dis. 2017 Jan 1;64(1):100-101. PubMed PMID: 27815292
  • Barocas JA, Wang J, White LF, Tasillo A, Salomon JA, Freedberg KA, Linas BP. Hepatitis C Testing Increased Among Baby Boomers Following The 2012 Change To CDC Testing Recommendations. Health Aff (Millwood). 2017 Dec;36(12):2142-2150. PubMed PMID: 29200354
  • Barocas JA, Linas BP, Kim AY, Fangman J, Westergaard RP. Acceptability of Rapid Point-of-Care Hepatitis C Tests Among People Who Inject Drugs and Utilize Syringe-Exchange Programs. Open Forum Infect Dis. 2016 Mar;3(2):ofw075. PubMed PMID: 27191007
  • Barocas JA, Baker L, Hull SJ, Stokes S, Westergaard RP. High uptake of naloxone-based overdose prevention training among previously incarcerated syringe-exchange program participants. Drug Alcohol Depend. 2015 Sep 1;154:283-6. PubMed PMID: 26143300
  • Brennan MB, Barocas JA, Crnich CJ, Hess TM, Kolehmainen CJ, Sosman JM, Sethi AK. "Oops! I forgot HIV": resident physician self-audits and universal HIV screening. J Infect Public Health. 2015 Mar-Apr;8(2):161-9. PubMed PMID: 25277258
  • Barocas JA, Erlandson KM, Belzer BK, Hess T, Sosman J. Advance directives among people living with HIV: room for improvement. AIDS Care. 2015;27(3):370-7. PubMed PMID: 25307722
  • Barocas JA, Gauthier GM. Peritonitis caused by Blastomyces dermatitidis in a kidney transplant recipient: case report and literature review. Transpl Infect Dis. 2014 Aug;16(4):634-41. PubMed PMID: 24862205
  • Brennan MB, Kolehmainen C, Barocas J, Isaac C, Crnich CJ, Sosman JM. Barriers and facilitators of universal HIV screening among internal medicine residents. WMJ. 2013 Oct;112(5):199-205. PubMed PMID: 24734414
  • Bauer CL, Victorson D, Rosenbloom S, Barocas J, Silver RK. Alleviating distress during antepartum hospitalization: a randomized controlled trial of music and recreation therapy. J Womens Health (Larchmt). 2010 Mar;19(3):523-31. PubMed PMID: 20141383
  • Barocas J, Mittal A, Borum ML. Colon cancer screening consultations can aid in obesity management. Obesity (Silver Spring). 2009 Jun;17(6):1112. PubMed PMID: 19584875
  • Victorson D, Barocas J, Song J, Cella D. Reliability across studies from the functional assessment of cancer therapy-general (FACT-G) and its subscales: a reliability generalization. Qual Life Res. 2008 Nov;17(9):1137-46. PubMed PMID: 18841493
  • Lai JS, Cella D, Peterman A, Barocas J, Goldman S. Anorexia/cachexia-related quality of life for children with cancer. Cancer. 2005 Oct 1;104(7):1531-9. PubMed PMID: 16088963
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Practice Locations

UCHealth Infectious Disease Clinic - Anschutz Medical Campus
1635 Aurora Ct
7th Floor
Aurora, CO 80045

Hospital Affiliation
  • University of Colorado Hospital
  • Denver Health Medical Center

Specialty Information

  • Infectious Disease
  • Internal Medicine
Conditions & Treatments
  • Infections - Viral Infections
  • Infections
  • Infections - Bacterial Infections
  • Infections - Pneumonia
  • Infections - Fungal Infections
  • Infections - Influenza
  • Infections - Sexually Transmitted Diseases
Clinical Interests
Providing evidence-based care to patients with infectious diseases; vulnerable populations such as those with substance use disorders, experiencing homelessness, or who have been previously incarcerated.

General Information

Medical Schools:
  • MD, George Washington University School of Medicine and Health Sciences (0001)
Undergraduate Schools:
  • BA, Washington University in Saint Louis (MO) (0001)
  • University of Wisconsin Hospital and Clinics Program (0001)
Residency Programs:
  • University of Wisconsin Program, Chief Resident, Internal Medicine (0001)
  • Brigham and Women's Hospital/Massachusetts General Hospital/Harvard Medical School Program, Infectious Disease (0001)
Department: Medicine-Internal Medicine
Contact Us
CU Anschutz
Fitzsimons Building

13001 East 17th Place
Campus Box C290
Aurora, CO 80045

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