Crystal North
Other Academic

Crystal North

Visiting Scientist

Environmental Health

Other Positions

Instructor in Medicine


Massachusetts General Hospital

Education and Training

MPH, 12/2018
Harvard T.H. Chan School of Public Health, Boston, MA

MD, 6/2008
University of Washington, Seattle, WA

6/2011, Internal Medicine
New York Presbyterian/Weill Cornell, New York, NY

6/2016, Pulmonary and Critical Care Medicine
Harvard Combined Fellowship of MGH, BWH and BIDMC, Boston, MA


Determining the Incidence of Asymptomatic SARS-CoV-2 among Early Recipients of COVID-19 Vaccines: A Prospective Cohort Study of Healthcare Workers before, during and after Vaccination [DISCOVER-COVID-19].

North CM, Barczak A, Goldstein RH, Healy BC, Finkelstein DM, Ding DD, Kim A, Boucau J, Shaw B, Gilbert RF, Vyas T, Reynolds Z, Siddle KJ, MacInnis BL, Regan J, Flynn JP, Choudhary MC, Vyas JM, Laskowski K, Dighe AS, Lemieux JE, Li JZ, Baden LR, Siedner MJ, Woolley AE, Sacks CA.

Clin Infect Dis. 2021 Aug 07. PMID: 34363462

Efficacy of Tocilizumab in Patients Hospitalized with Covid-19.

Stone JH, Frigault MJ, Serling-Boyd NJ, Fernandes AD, Harvey L, Foulkes AS, Horick NK, Healy BC, Shah R, Bensaci AM, Woolley AE, Nikiforow S, Lin N, Sagar M, Schrager H, Huckins DS, Axelrod M, Pincus MD, Fleisher J, Sacks CA, Dougan M, North CM, Halvorsen YD, Thurber TK, Dagher Z, Scherer A, Wallwork RS, Kim AY, Schoenfeld S, Sen P, Neilan TG, Perugino CA, Unizony SH, Collier DS, Matza MA, Yinh JM, Bowman KA, Meyerowitz E, Zafar A, Drobni ZD, Bolster MB, Kohler M, D'Silva KM, Dau J, Lockwood MM, Cubbison C, Weber BN, Mansour MK.

N Engl J Med. 2020 12 10. 383(24):2333-2344. PMID: 33085857