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Marco Armando Hidalgo

TitleAssistant Professor of Clinical Pediatrics
InstitutionUniversity of Southern California
DepartmentPediatrics
Address4640 West Sunset Boulevard
Off Campus
Los Angeles CA 90027
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    Collapse Biography 
    Collapse Education and Training
    Universiteit van Amsterdam, Amsterdam, NLCertificate07/2002Sexuality and gender studies
    San Francisco State University, San Francisco, CABA05/2004Psychology
    DePaul University, Chicago, ILMA06/2007Clinical psychology
    DePaul University, Chicago, ILPhD09/2011Clinical psychology
    Cambridge Health Alliance/Harvard Medical School, Boston, MAFellowship08/2012Trauma psychology
    Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, ILFellowship06/2013Clinical-child psychology (trauma, mood and anxiety)
    Collapse Awards and Honors
    Northwestern University Feinberg School of Medicine, Chicago, IL2017Recognition for Excellence in Teaching
    Society for Adolescent Health and Medicine (SAHM)2014Finalist, Robert H. DuRant Award for Statistical Rigor and Innovation in Adolescent Health Research

    Collapse Overview 
    Collapse Overview
    Marco A. Hidalgo, PhD, is Assistant Professor of Clinical Pediatrics and faculty clinical psychologist in the Center for Transyouth Health and Development at Children's Hospital Los Angeles. He joined the CHLA/KSOM faculty in 2018, after relocating from Lurie Children's Hospital/Northwestern University Feinberg School of Medicine. In 2013, while faculty at Lurie Children's, Dr. Hidalgo co-established the nationally-renowned Gender and Sex Development Program — the Midwest's largest pediatric subspecialty program for transgender/gender-expansive children, adolescents, young adults and their families.

    Dr. Hidalgo's research examines gender development, family support, and behavioral HIV prevention intervention in transgender/gender-expansive youth and YMSM. He is particularly interested in assessing the impact of minority stress factors and gender-affirmative care among transgender youth, mobile-platform behavioral HIV intervention with YMSM, and PrEP uptake in Latinx young adults. He is currently Co-Investigator on three multisite, NIH-funded studies examining: (1) the impact of early medical treatment in transgender youth who seek care in Los Angeles, Boston, Chicago and San Francisco; (2) efficacy outcomes of a RCT employing a mobile-based adaptation of the MyPEEPS behavioral HIV prevention intervention among YMSM in New York City, Birmingham, Seattle, and Chicago, and; (3) the effects of couples-based versus individual HIV-testing approaches on ARV uptake/adherence among HIV-serodiscordant male couples in Atlanta, Boston, and Chicago.

    In his clinical work, Dr. Hidalgo sees children, adolescents and young adults (up to age 25) in individual and family therapy. He integrates evidence-based approaches to treat behavior problems and other problems related to depressive, anxiety, acute-stress and post-traumatic stress conditions.

    Dr. Hidalgo teaches CHLA/KSOM trainees and fellows on topics relevant to adolescent behavioral health, LGBTQ health, and behavioral research. In 2017, he was recognized by Northwestern University's Feinberg School of Medicine for his excellence in teaching on topics related to child-adolescent gender and sexuality.


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    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.
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    1. Hidalgo MA Suarez NA Garofalo R Hoehnle S Thai J Mimiaga MJ Brown E Sullivan P Bratcher A Wimbly T Stephenson R.. Clinically significant depressive symptoms among a diverse sample of same-sex male couples in Atlanta, Boston, and Chicago: An analysis of individual- and dyadic-level factors. Journal of Gay & Lesbian Mental Health. 2018.
    2. Suarez NA Mimiaga MJ Garofalo R Brown E Bratcher A Wimbly T Hidalgo MA Hoehnle S Thai J Kahle E Sullivan PS Stephenson R.Dyadic reporting of intimate partner violence among male couples in three US cities. American Journal of Men's Health. 2018; 12(4):1039.
    3. Marsack J Kahle E Suarez NA Mimiaga MJ Garofalo R Brown E Bratcher A Wimbly T Hidalgo MA Hoehnle S Thai J Sullivan PS Stephenson R.Relationship characteristics and dyadic approaches to HIV health-enhancing behaviours among a sample of same-sex male couples from three US cities. Journal of Relationships Research. 2018; 9.
    4. Schnall R Kuhns L Hidalgo MA Hirschfield S Pearson C Radix A Belkind U Bruce J Batey DS Garofalo R.Development of MyPEEPS Mobile: A behavioral health intervention for young men. Studies in Health Technology and Informatics. 2018; 250:31.
    5. Hidalgo MA.. Affirmative Mental Health Care for Transgender and Gender Diverse Youth. Trauma stabilization and recovery in a transgender Latina: A retrospective case example. 2018; 145-156.
    6. Chen D Hidalgo MA Garofalo R .Parental perceptions of emotional and behavioral difficulties among prepubertal gender-nonconforming children. Clinical Practice in Pediatric Psychology. 2017; 5(4):342.
    7. Hidalgo MA, Chen D, Garofalo R, Forbes C. Perceived Parental Attitudes of Gender Expansiveness: Development and Preliminary Factor Structure of a Self-Report Youth Questionnaire. Transgend Health. 2017; 2(1):180-187. PMID: 29159312.
      View in: PubMed
    8. Stephenson R, Suarez NA, Garofalo R, Hidalgo MA, Hoehnle S, Thai J, Mimiaga MJ, Brown E, Bratcher A, Wimbly T, Sullivan P. Project Stronger Together: Protocol to Test a Dyadic Intervention to Improve Engagement in HIV Care Among Sero-Discordant Male Couples in Three US Cities. JMIR Res Protoc. 2017 Aug 31; 6(8):e170. PMID: 28860107.
      View in: PubMed
    9. Chen D, Hidalgo MA, Garofalo R.Parental perceptions of emotional and behavioral difficulties among prepubertal gender-nonconforming children. Clinical Practice in Pediatric Psychology. 2017; 5:342–352.
    10. Kolbruck VD, Chen D, Hidalgo MA, Chodzen G, Garofalo R.Parental Responses to Childrens’ Gender-Nonconforming Behavior. Perspectives on Early Childhood Psychology and Education. 2017; 2(2).
    11. Bazzi AR, Fergus KB, Stephenson R, Finneran CA, Coffey-Esquivel J, Hidalgo MA, Hoehnle S, Sullivan PS, Garofalo R, Mimiaga MJ. A Dyadic Behavioral Intervention to Optimize Same Sex Male Couples' Engagement Across the HIV Care Continuum: Development of and Protocol for an Innovative Couples-based Approach (Partner Steps). JMIR Res Protoc. 2016 Aug 25; 5(3):e168. PMID: 27562905.
      View in: PubMed
    12. Chen D, Hidalgo MA, Leibowitz S, Leininger J, Simons L, Finlayson C, Garofalo R. Multidisciplinary Care for Gender-Diverse Youth: A Narrative Review and Unique Model of Gender-Affirming Care. Transgend Health. 2016; 1(1):117-123. PMID: 28861529.
      View in: PubMed
    13. Bird JD, LaSala MC, Hidalgo MA, Kuhns LM, Garofalo R. "I Had to Go to the Streets to Get Love": Pathways From Parental Rejection to HIV Risk Among Young Gay and Bisexual Men. J Homosex. 2017; 64(3):321-342. PMID: 27092441.
      View in: PubMed
    14. Hidalgo MA, Kuhns LM, Kwon S, Mustanski B, Garofalo R. The impact of childhood gender expression on childhood sexual abuse and psychopathology among young men who have sex with men. Child Abuse Negl. 2015 Aug; 46:103-12. PMID: 26002599; PMCID: PMC4527874.
    15. Leibowitz S, Chen D, Hidalgo MA.. Dulcan's Textbook of Child and Adolescent Psychiatry (Ed. M Dulcan). Gender Dysphoria and Nonconformity. 2015; 585-602.
    16. Hidalgo MA, Kuhns LM, Hotton AL, Johnson AK, Mustanski B, Garofalo R. The MyPEEPS randomized controlled trial: a pilot of preliminary efficacy, feasibility, and acceptability of a group-level, HIV risk reduction intervention for young men who have sex with men. Arch Sex Behav. 2015 Feb; 44(2):475-85. PMID: 25135064; PMCID: PMC4559339.
    17. Garofalo R, Kuhns LM, Hidalgo M, Gayles T, Kwon S, Muldoon AL, Mustanski B. Impact of religiosity on the sexual risk behaviors of young men who have sex with men. J Sex Res. 2015; 52(5):590-8. PMID: 25072796; PMCID: PMC4425613.
    18. Simons LK, Leibowitz SF, Hidalgo MA. Understanding gender variance in children and adolescents. Pediatr Ann. 2014 Jun; 43(6):e126-31. PMID: 24972420.
      View in: PubMed
    19. Hidalgo MA, Ehrensaft D, Tishelman AC, Clark LF, Garofalo R, Rosenthal SM, Spack NP, Olson J.The gender affirmative model: What we know and what we aim to learn. Human Development. 2013; 56(5):285-90.
    20. Wilson BD, Harper GW, Hidalgo MA, Jamil OB, Torres RS, Fernandez MI. Negotiating dominant masculinity ideology: strategies used by gay, bisexual and questioning male adolescents. Am J Community Psychol. 2010 Mar; 45(1-2):169-85. PMID: 20082238; PMCID: PMC2906685.
    21. Oden K, Hernandez B, Hidalgo MA. Payoffs of Participatory Action Research: Racial and Ethnic Minorities with Disabilities Reflect on their Research Experiences. Community Dev (Columb). 2010 Jan; 41(1):21-31. PMID: 20668640.
      View in: PubMed
    22. Warren JC, Fernández MI, Harper GW, Hidalgo MA, Jamil OB, Torres RS. Predictors of unprotected sex among young sexually active African American, Hispanic, and White MSM: the importance of ethnicity and culture. AIDS Behav. 2008 May; 12(3):459-68. PMID: 17721725; PMCID: PMC2832790.
    23. RC Garthe MA Hidalgo J Hereth R Garofalo SL Reisner MJ Mimiaga L Kuhns.(In Press) Prevalence and risk correlates of intimate partner violence among a multi-site cohort of young transgender women. LGBT Health.
    24. G Chodzen MA Hidalgo D Chen R Garofalo.(In Press) Minority stress factors associated with depression and anxiety among transgender and gender-nonconforming youth. Journal of Adolescent Health.