## About

Marisa C. Nielsen, MS, PhD, is Medical Director of Clinical Microbiology at Boston Medical Center and Assistant Professor of Pathology and Laboratory Medicine at the Boston University Chobanian & Avedisian School of Medicine.

Dr. Nielsen earned an MS in Environmental Microbiology at the University of Arizona and spent nearly a decade working in clinical microbiology before pursuing a PhD at University ...  of California, Irvine. Afterwards, she completed a clinical microbiology fellowship at the University of Texas Medical Branch.

Dr. Nielsen is a certified Specialist in Microbiology by the American Society for Clinical Pathology and a board-accredited Diplomate of the American Board of Medical Microbiology (ABMM). Her interests include infectious disease diagnostics and microscopy, with a specific focus on high-consequence pathogens, particularly those acquired from environmental exposures.

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- ### Departments
    
    [Lab Services](/departments/lab-services), [Infectious Diseases](/departments/infectious-diseases)
- ### Specialties
    
    Environmental microbiology; infectious disease diagnostics and microscopy; pathogens acquired from environmental exposures
 
 

- ### Contact
    
     [617.414.4291](tel:617.414.4291)
- ### Primary Location
    
    BMC, 670 Albany  
    [670 Albany Street  
    7th Floor  
    Boston, MA 02118](https://www.google.com/maps/search/?q=670+Albany+Street%0D%0ABoston%2C+MA+02118)
 
 

 



 

 

- ### Administrative Title
    
    Assistant Professor of Pathology & Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine
- ### Education
    
    MS, University of Arizona
    
    PhD, University of California, Irvine
- ### Board Certifications
    
    Specialist in Microbiology, American Society for Clinical Pathology
    
    Diplomate, American Board of Medical Microbiology (D-ABMM)
 
 

 

 ## Affiliations

  ###  ![Boston University](https://www.bmc.org/sites/default/files/styles/medium/public/2024-04/busm-new.jpg?itok=gJTsGGU9) 

  [View profile](https://profiles.bu.edu/Marisa.Nielsen)

 

  ###  ![Boston University Chobanian & Avedisian School of Medicine](https://www.bmc.org/sites/default/files/styles/medium/public/2024-04/Busm%20from%20BMC.jpeg?itok=oBelzJKj) 

  [View profile](https://www.bumc.bu.edu/busm/profile/marisa-nielsen/)

 

 

 

 

  ## Affiliations

  ###  ![Boston University](https://www.bmc.org/sites/default/files/styles/medium/public/2024-04/busm-new.jpg?itok=gJTsGGU9) 

  [View profile](https://profiles.bu.edu/Marisa.Nielsen)

 

  ###  ![Boston University Chobanian & Avedisian School of Medicine](https://www.bmc.org/sites/default/files/styles/medium/public/2024-04/Busm%20from%20BMC.jpeg?itok=oBelzJKj) 

  [View profile](https://www.bumc.bu.edu/busm/profile/marisa-nielsen/)