Cristina Costales, MD

Attending Physician
Assistant Professor of Clinical Pathology, Keck School of Medicine of USC

Dr. Cristina Costales is an Attending Physician under the Department of Pathology and Laboratory Medicine at Children's Hospital Los Angeles. She is an Assistant Professor of Clinical Pathology at the Keck School of Medicine of USC. Her major areas of research interest include clinical application of infectious disease diagnostics and pathology service expansion in global health.


Medical School

Zucker School of Medicine at Hofstra/Northwell


LAC+USC Medical Center


Stanford University School of Medicine



Anatomic & Clinical Pathology, American Board of Pathology


American Society for Clinical Pathology
College of American Pathologists
Physicians for Social Responsibility - Los Angeles
American Society for Microbiology
American Society for Tropical Medicine and Hygiene
United States and Canadian Academy of Pathology

Medical Awards

Resident Travel Scholarship
Resident Excellence in Teaching Award
VECD Fogarty Global Health Research Fellowship Award
Young Investigator Award Honorable Mention
Best Poster Presentation, Resident and Fellow Category



Costales C. Integration of Histopathology and Clinical Microbiology in the Diagnosis of Infectious Diseases: Focus on Mycoses. Clin Microbiol Newsletter. 2022 Aug;44(16):139-149. doi: 10.1016/j.clinmicnews.2022.08.003.

Yang LM, Costales C, Ramanathan M, Bulterys PL, Murugesan K, Schroers-Martin J, Alizadeh AA, Boyd SD, Brown JM, Nadeau KC, Nadimpalli SS, Wang AX, Busque S, Pinsky BA, Banaei N. Cellular and humoral immune response to SARS-CoV-2 vaccination and booster dose in immunosuppressed patients: An observational cohort study. J Clin Virol. 2022 Aug;153:105217. doi: 10.1016/j.jcv.2022.105217. PMID: 35714462.

Costales C, Crump JA, Mremi AR, Amsi PT, Kalengo NH, Kilonzo KG, Kinabo G, Lwezaula BF, Lyamuya F, Marandu A, Mbwasi R, Mmbaga BT, Mosha C, Carugati M, Madut DB, Nelson AM, Maze MJ, Matkovic E, Zaki SR, Maro VP, Rubach MP. Performance of Xpert Ultra nasopharyngeal swab for identification of tuberculosis deaths in northern Tanzania. Clin Microbiol Infect. 2022 Aug;28(8):1150.e1-1150.e6. doi: 10.1016/j.cmi.2022.03.027. PMID: 35358686.

Costales C, Broadhurst MJ, Budvytiene I, Banaei N. Clinical accuracy of malaria loop-mediated isothermal amplification assay as a stand-alone screening tool at a non-endemic Northern California regional health system. Diagn Microbiol Infect Dis. 2022 Jun;103(2):115680. doi: 10.1016/j.diagmicrobio.2022.115680. PMID: 35385811.

Costales C, Sahoo MK, Huang C, Guimaraes CV, Born D, Kushner L, Gans HA, Doan TA, Pinsky BA. Vaccine-Associated Measles Encephalitis in Immunocompromised Child, California, USA. Emerg Infect Dis. 2022 Apr;28(4):906-908. doi: 10.3201/eid2804.212357. PMID: 35318930.


Research Summary

Clinical application of infectious disease diagnostics; pathology service expansion in global health.