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    Marvin E. Belzer, MD

    TitleProfessor of Clinical Pediatrics and Medicine
    SchoolKeck School of Medicine of USC
    DepartmentPediatrics
    AddressCHL Mail Stop 2
    Off Campus
    Los Angeles California 90089
    Phone+1 323 361 4758
    Emailmbelzer@chla.usc.edu
    vCardDownload vCard
      Other Positions
      TitleDivision Head, Adolescent Medicine


      Collapse Overview 
      Collapse Overview
      Involved in many aspect of adolescent HIV including clinical trials, adherence, secondary prevention. Have conducted research on adherence to contraception and utilization of emergency contraception. Lastly, I am conducting research on HIV prevention and healthcare for youth with gender identity disorder.

      Expert in adolescent medicine, especially HIV/AIDS, sexuality, gender identity, and chronic fatigue syndrome


      Collapse Bibliographic 
      Collapse Publications
      Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
      List All   |   Timeline
      1. Kahn JA, Lee J, Belzer M, Palefsky JM. HIV-Infected Young Men Demonstrate Appropriate Risk Perceptions and Beliefs about Safer Sexual Behaviors after Human Papillomavirus Vaccination. AIDS Behav. 2017 Feb 20. PMID: 28220313.
        View in: PubMed
      2. Aguilera-Sandoval CR, Yang OO, Jojic N, Lovato P, Chen DY, Boechat MI, Cooper P, Zuo J, Ramirez C, Belzer M, Church JA, Krogstad P. Supranormal thymic output up to 2 decades after HIV-1 infection. AIDS. 2016 Mar 13; 30(5):701-11. PMID: 26730570; PMCID: PMC4767664 [Available on 03/13/17].
      3. Olson J, Schrager SM, Belzer M, Simons LK, Clark LF. Baseline Physiologic and Psychosocial Characteristics of Transgender Youth Seeking Care for Gender Dysphoria. J Adolesc Health. 2015 Oct; 57(4):374-80. PMID: 26208863; PMCID: PMC5033041.
      4. Belzer M, Kolmodin MacDonell K, Clark LF, Huang J, Olson J, Kahana SY, Naar S, Sarr M, Thornton S. Acceptability and Feasibility of a Cell Phone Support Intervention for Youth Living with HIV with Nonadherence to Antiretroviral Therapy. AIDS Patient Care STDS. 2015 Jun; 29(6):338-45. PMID: 25928772; PMCID: PMC4516960.
      5. Dowshen N, Matone M, Luan X, Lee S, Belzer M, Fernandez MI, Rubin D. Behavioral and Health Outcomes for HIV+ Young Transgender Women (YTW) Linked To and Engaged in Medical Care. LGBT Health. 2016 Apr; 3(2):162-7. PMID: 26789394; PMCID: PMC4723288.
      6. Olson J, Schrager SM, Clark LF, Dunlap SL, Belzer M. Subcutaneous Testosterone: An Effective Delivery Mechanism for Masculinizing Young Transgender Men. LGBT Health. 2014 Sep; 1(3):165-7. PMID: 26789709.
        View in: PubMed
      7. Belzer M, Naar-King S, Olson J, Sarr M, Thornton S, Kahana SY, Gaur AH, Clark LF. The use of cell phone support for non-adherent HIV-infected youth and young adults: an initial randomized and controlled intervention trial. AIDS Behav. 2014 Apr; 18(4):686-96. PMID: 24271347; PMCID: PMC3962719.
      8. Schrager SM, Olson J, Beharry M, Belzer M, Goldsich K, Desai M, Clark LF. Young men and the morning after: a missed opportunity for emergency contraception provision? J Fam Plann Reprod Health Care. 2015 Jan; 41(1):33-7. PMID: 24465024.
        View in: PubMed
      9. Simons L, Schrager SM, Clark LF, Belzer M, Olson J. Parental support and mental health among transgender adolescents. J Adolesc Health. 2013 Dec; 53(6):791-3. PMID: 24012067; PMCID: PMC3838484.
      10. Outlaw AY, Naar-King S, Tanney M, Belzer M, Aagenes A, Parsons JT, Merlo LJ. The initial feasibility of a computer-based motivational intervention for adherence for youth newly recommended to start antiretroviral treatment. AIDS Care. 2014 Jan; 26(1):130-5. PMID: 23869650; PMCID: PMC3872202.
      11. Naar-King S, Outlaw AY, Sarr M, Parsons JT, Belzer M, Macdonell K, Tanney M, Ondersma SJ. Motivational Enhancement System for Adherence (MESA): pilot randomized trial of a brief computer-delivered prevention intervention for youth initiating antiretroviral treatment. J Pediatr Psychol. 2013 Jul; 38(6):638-48. PMID: 23359664; PMCID: PMC3701125.
      12. MacDonell K, Naar-King S, Huszti H, Belzer M. Barriers to medication adherence in behaviorally and perinatally infected youth living with HIV. AIDS Behav. 2013 Jan; 17(1):86-93. PMID: 23142855; PMCID: PMC3549030.
      13. Brennan J, Kuhns LM, Johnson AK, Belzer M, Wilson EC, Garofalo R. Syndemic theory and HIV-related risk among young transgender women: the role of multiple, co-occurring health problems and social marginalization. Am J Public Health. 2012 Sep; 102(9):1751-7. PMID: 22873480; PMCID: PMC3416048.
      14. Wilson EC, Iverson E, Garofalo R, Belzer M. Parental support and condom use among transgender female youth. J Assoc Nurses AIDS Care. 2012 Jul-Aug; 23(4):306-17. PMID: 22079675; PMCID: PMC3288276.
      15. Zuo J, Suen J, Wong A, Lewis M, Ayub A, Belzer M, Church J, Yang OO, Krogstad P. Functional analysis of HIV type 1 Nef gene variants from adolescent and adult survivors of perinatal infection. AIDS Res Hum Retroviruses. 2012 May; 28(5):486-92. PMID: 21861776; PMCID: PMC3332374.
      16. Olson J, Forbes C, Belzer M. Management of the transgender adolescent. Arch Pediatr Adolesc Med. 2011 Feb; 165(2):171-6. PMID: 21300658.
        View in: PubMed
      17. Garvie PA, Flynn PM, Belzer M, Britto P, Hu C, Graham B, Neely M, McSherry GD, Spector SA, Gaur AH. Psychological factors, beliefs about medication, and adherence of youth with human immunodeficiency virus in a multisite directly observed therapy pilot study. J Adolesc Health. 2011 Jun; 48(6):637-40. PMID: 21575827; PMCID: PMC3096841.
      18. Gaur AH, Belzer M, Britto P, Garvie PA, Hu C, Graham B, Neely M, McSherry G, Spector SA, Flynn PM. Directly observed therapy (DOT) for nonadherent HIV-infected youth: lessons learned, challenges ahead. AIDS Res Hum Retroviruses. 2010 Sep; 26(9):947-53. PMID: 20707731; PMCID: PMC2957634.
      19. Zuo J, Church J, Belzer M, Kitchen C, Ank B, Schmid I, Krogstad P. Short communication: enhanced CD8+ T cell apoptosis in HIV-infected adolescents with virologic failure on protease inhibitor-based therapy. AIDS Res Hum Retroviruses. 2010 Jun; 26(6):681-4. PMID: 20507209; PMCID: PMC2932552.
      20. Barnes W, D'Angelo L, Yamazaki M, Belzer M, Schroeder S, Palmer-Castor J, Futterman D, Kapogiannis B, Muenz L, Harris DR, Ellen JM. Identification of HIV-infected 12- to 24-year-old men and women in 15 US cities through venue-based testing. Arch Pediatr Adolesc Med. 2010 Mar; 164(3):273-6. PMID: 20194262; PMCID: PMC2903430.
      21. Nugent NR, Brown LK, Belzer M, Harper GW, Nachman S, Naar-King S. Youth living with HIV and problem substance use: elevated distress is associated with nonadherence and sexual risk. J Int Assoc Physicians AIDS Care (Chic). 2010 Mar-Apr; 9(2):113-5. PMID: 20133498; PMCID: PMC3052784.
      22. Naar-King S, Parsons JT, Murphy DA, Chen X, Harris DR, Belzer M. Improving health outcomes for youth living with the human immunodeficiency virus: a multisite randomized trial of a motivational intervention targeting multiple risk behaviors. Arch Pediatr Adolesc Med. 2009 Dec; 163(12):1092-8. PMID: 19996045; PMCID: PMC2843389.
      23. Wilson EC, Garofalo R, Harris DR, Belzer M. Sexual risk taking among transgender male-to-female youths with different partner types. Am J Public Health. 2010 Aug; 100(8):1500-5. PMID: 20622176; PMCID: PMC2901273.
      24. Shiu C, Cunningham CK, Greenough T, Muresan P, Sanchez-Merino V, Carey V, Jackson JB, Ziemniak C, Fox L, Belzer M, Ray SC, Luzuriaga K, Persaud D. Identification of ongoing human immunodeficiency virus type 1 (HIV-1) replication in residual viremia during recombinant HIV-1 poxvirus immunizations in patients with clinically undetectable viral loads on durable suppressive highly active antiretroviral therapy. J Virol. 2009 Oct; 83(19):9731-42. PMID: 19605490; PMCID: PMC2748010.
      25. Wilson EC, Garofalo R, Harris RD, Herrick A, Martinez M, Martinez J, Belzer M. Transgender female youth and sex work: HIV risk and a comparison of life factors related to engagement in sex work. AIDS Behav. 2009 Oct; 13(5):902-13. PMID: 19199022; PMCID: PMC2756328.
      26. Garvie PA, Lawford J, Flynn PM, Gaur AH, Belzer M, McSherry GD, Hu C. Development of a directly observed therapy adherence intervention for adolescents with human immunodeficiency virus-1: application of focus group methodology to inform design, feasibility, and acceptability. J Adolesc Health. 2009 Feb; 44(2):124-32. PMID: 19167660; PMCID: PMC2659610.
      27. Flynn PM, Rudy BJ, Lindsey JC, Douglas SD, Lathey J, Spector SA, Martinez J, Silio M, Belzer M, Friedman L, D'Angelo L, Smith E, Hodge J, Hughes MD. Long-term observation of adolescents initiating HAART therapy: three-year follow-up. AIDS Res Hum Retroviruses. 2007 Oct; 23(10):1208-14. PMID: 17961106.
        View in: PubMed
      28. Corliss HL, Belzer M, Forbes C, Wilson EC. An evaluation of service utilization among male to female transgender youth: qualitative study of a clinic-based sample. J LGBT Health Res. 2007; 3(2):49-61. PMID: 19835041.
        View in: PubMed
      29. Puccio JA, Belzer M, Olson J, Martinez M, Salata C, Tucker D, Tanaka D. The use of cell phone reminder calls for assisting HIV-infected adolescents and young adults to adhere to highly active antiretroviral therapy: a pilot study. AIDS Patient Care STDS. 2006 Jun; 20(6):438-44. PMID: 16789857.
        View in: PubMed
      30. Lee JC, Boechat MI, Belzer M, Church JA, De Ville J, Nielsen K, Weston S, Geng Y, Dunaway T, Kitchen C, Krogstad PA. Thymic volume, T-cell populations, and parameters of thymopoiesis in adolescent and adult survivors of HIV infection acquired in infancy. AIDS. 2006 Mar 21; 20(5):667-74. PMID: 16514296.
        View in: PubMed
      31. Belzer M, Sanchez K, Olson J, Jacobs AM, Tucker D. Advance supply of emergency contraception: a randomized trial in adolescent mothers. J Pediatr Adolesc Gynecol. 2005 Oct; 18(5):347-54. PMID: 16202939.
        View in: PubMed
      32. Murphy DA, Belzer M, Durako SJ, Sarr M, Wilson CM, Muenz LR. Longitudinal antiretroviral adherence among adolescents infected with human immunodeficiency virus. Arch Pediatr Adolesc Med. 2005 Aug; 159(8):764-70. PMID: 16061785.
        View in: PubMed
      33. Chulani VL, Belzer M, Broms TL. Radioiodine treatment for hyperthyroidism presenting primarily as psychiatric disease in three adolescent and young adult patients. J Pediatr Endocrinol Metab. 2004 Aug; 17(8):1121-3. PMID: 15379425.
        View in: PubMed
      34. Flynn PM, Rudy BJ, Douglas SD, Lathey J, Spector SA, Martinez J, Silio M, Belzer M, Friedman L, D'Angelo L, McNamara J, Hodge J, Hughes MD, Lindsey JC. Virologic and immunologic outcomes after 24 weeks in HIV type 1-infected adolescents receiving highly active antiretroviral therapy. J Infect Dis. 2004 Jul 15; 190(2):271-9. PMID: 15216461.
        View in: PubMed
      35. Pham T, Belzer M, Church JA, Kitchen C, Wilson CM, Douglas SD, Geng Y, Silva M, Mitchell RM, Krogstad P. Assessment of thymic activity in human immunodeficiency virus-negative and -positive adolescents by real-time PCR quantitation of T-cell receptor rearrangement excision circles. Clin Diagn Lab Immunol. 2003 Mar; 10(2):323-8. PMID: 12626462; PMCID: PMC150534.