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Marco A Grados, M.D., M.P.H.

Headshot of Marco A Grados
  • Clinical Director
  • Associate Professor of Psychiatry and Behavioral Sciences

Languages: English, Spanish


Adult Psychiatry, Anxiety Disorders, Attention Deficit Disorder (ADD), Attention Deficit Hyperactivity Disorder (ADHD), Child and Adolescent Psychiatry, Child Development and Behavioral Health, Child Psychiatry, Neurodevelopmental Disorders, Obsessive-Compulsive Disorders, Psychiatry, Psychiatry and Behavioral Sciences more

Research Interests

Obsessive-Compulsive Disorder, Tourette Syndrome , Genetics more

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The Johns Hopkins Hospital (Main Entrance)

Appointment Phone: 410-955-5335
1800 Orleans St.
The Charlotte R. Bloomberg Children's Center Building
Baltimore, MD 21287 map
Phone: 443-287-2291 | Fax: 410-955-8691



  • Clinical Director
  • Associate Professor of Psychiatry and Behavioral Sciences

Departments / Divisions

Centers & Institutes



  • MD; Universidad Peruana Cayetano Heredia Facultad de Medicina Alberto Hurtado (1990)


  • Psychiatry; Henry Ford Hospital (1994)
  • Child Psychiatry; Johns Hopkins University School of Medicine (1996)

Board Certifications

  • American Board of Psychiatry and Neurology (Child & Adolescent Psychiatry) (1997)

Research & Publications

Clinical Trials

Learn more about clinical trials at Johns Hopkins Medicine.

Selected Publications

1. Nestadt G, Samuels JF, Riddle MA, Bienvenu OJ, Liang KY,
LaBuda M, Walkup JT, Grados MA, Hoehn-Saric R. (2000). A family study of obsessive-compulsive disorder. Archives of General Psychiatry. 57: 358-363.
2. Grados MA, Riddle MA, Samuels JF, Liang KY, Hoehn-Saric R, Bienvenu OJ, Walkup JT, Song D, Nestadt G. The familial phenotype of obsessive-compulsive disorder in relation to tic disorders: the Hopkins OCD Family Study. (2001). Biological Psychiatry 50(8): 559-65.
3. Shugart YY, Samuels J, Willour VL, Grados MA, et al. (2006). Genomewide linkage scan for obsessive-compulsive disorder: evidence for susceptibility loci on chromosomes 3q, 7p, 15q, 6q, and 1q. Molecular Psychiatry. 11(8):763-70.
4. Grados MA, Samuels J, Shugart YY, Willour VL, et al. (2007). Rare plus common SERT variants in obsessive-compulsive disorder. Molecular Psychiatry. 12(5):422-3.
5. Grados MA, Vasa RA, Riddle MA, Slomine BS, Salorio C, Christensen J, Gerring JP. (2008). Obsessive-compulsive symptoms in children & adolescents with traumatic brain injury. Depression and Anxiety. 25(5):398-407.
6. Grados MA, Mathews CA & The Tourette Syndrome Association. (2008). Latent class analysis of Gilles de la Tourette syndrome using comorbidities: clinical and genetic Implications. Biological Psychiatry. 64(3):219-25.
7. Ginsburg GS, Kingery JN, Drake KL, Grados MA. (2008). Predictors of treatment response in pediatric obsessive-compulsive disorder. Journal of the American Academy of Child & Adolescent Psychiatry. 47(8):868-78.
8. Grados MA, Riddle MA. (2008). Editorial. Two times four is four: OCD dimensions, classes, and categories. J Am Acad Child Adolesc Psychiatry. 47(7):731-3.
9. Grados, MA. (2009). The genetics of obsessive-compulsive disorder and Tourette''s syndrome: what are the common factors? Curr Psychiatry Rep. 11(2):162-166.

10. Srivastava S, Landy-Schmitt C, Clark B, Kline AD, Specht M, Grados MA.  Autism traits in children and adolescents with Cornelia de Lange syndrome.  Am J Med Genet A. 2014 Jun;164A(6):1400-10.

Activities & Honors


  • Research Award, Tourette Syndrome Association, Inc., 2005
  • Research Award, Obsessive-Compulsive Foundation, 2005
  • Research Award, Cornelia de Lange Syndrome Foundation, 2008

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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