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Marvin E. Belzer, MD

TitleProfessor of Clinical Pediatrics and Medicine
InstitutionUniversity of Southern California
DepartmentPediatrics
AddressCHL Mail Stop 2
Off Campus
Los Angeles CA 90089
Phone+1 323 361 4758
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    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 Research 
    Collapse Research Activities and Funding
    Youth Services Navigation Intervention for HIV+ adolescents and young adults being released from incarceration: A randomized control trial
    NIH/NIMHD R01MD011773Aug 8, 2017 - Mar 31, 2022
    Role: Co-Principal Investigator
    Adolescent Medicine Trials Network for HIV/AIDS Interventions
    NIH/NICHD U01HD040463Apr 16, 2001 - Feb 29, 2016
    Role: Principal Investigator
    ADOLESCENT MEDICINE HIV/AIDS RESEARCH NETWORK
    NIH/NICHD U01HD032838Sep 29, 1994 - Nov 30, 2001
    Role: Principal Investigator

    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. Sayegh CS, Szmuszkovicz JR, Menteer J, Sherer S, Thomas D, Lestz R, Belzer M. Cell phone support to improve medication adherence among solid organ transplant recipients. Pediatr Transplant. 2018 Jun 19; e13235. PMID: 29920879.
      View in: PubMed
    2. Sayegh CS, MacDonell KK, Clark LF, Dowshen NL, Naar S, Olson-Kennedy J, van den Berg JJ, Xu J, Belzer M. The Impact of Cell Phone Support on Psychosocial Outcomes for Youth Living with HIV Nonadherent to Antiretroviral Therapy. AIDS Behav. 2018 Jun 12. PMID: 29948339.
      View in: PubMed
    3. Olson-Kennedy J, Warus J, Okonta V, Belzer M, Clark LF. Chest Reconstruction and Chest Dysphoria in Transmasculine Minors and Young Adults: Comparisons of Nonsurgical and Postsurgical Cohorts. JAMA Pediatr. 2018 Mar 05. PMID: 29507933.
      View in: PubMed
    4. Olson-Kennedy J, Okonta V, Clark LF, Belzer M. Physiologic Response to Gender-Affirming Hormones Among Transgender Youth. J Adolesc Health. 2018 Apr; 62(4):397-401. PMID: 29056436.
      View in: PubMed
    5. 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
    6. 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].
    7. 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.
    8. Belzer ME, 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.
      View in: PubMed
    9. 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.
    10. 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
    11. Belzer ME, 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.
    12. 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
    13. 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.
    14. Outlaw AY, Naar-King S, Tanney M, Belzer ME, 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.
    15. 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.
    16. 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.
    17. 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.
    18. 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.
    19. 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.
    20. 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
    21. 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.
    22. 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.
    23. 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.
    24. 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.
    25. 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.
    26. Naar-King S, Parsons JT, Murphy DA, Chen X, Harris DR, Belzer ME. 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.
    27. 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.
    28. 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.
    29. 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.
    30. 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.
    31. 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
    32. 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
    33. 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
    34. 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
    35. 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
    36. 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
    37. 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
    38. 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
    39. 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.