William Garrett Greendyke, MD

Infectious Disease, Internal Medicine
Accepting New Patients
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Academic Appointments

  • Assistant Professor of Medicine at CUMC

Administrative Titles

  • Associate Hospital Epidemiologist, NewYork-Presbyterian Hospital

Hospital Affiliations

  • NewYork-Presbyterian / Columbia University Irving Medical Center


  • Male

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180 Fort Washington Avenue
New York, NY 10032

Credentials & Experience

Education & Training

  • MD, University of Texas Medical School at San Antonio
  • Residency: NewYork-Presbyterian Hospital/Columbia University Medical Center
  • Fellowship: NewYork-Presbyterian Hospital/Columbia University Medical Center

Board Certifications

  • Infectious Disease
  • Internal Medicine

Honors & Awards

Alpha Omega Alpha - 2010

Gold Humanism Honor Society - 2010


Dr. Greendyke serves as an Associate Hospital Epidemiologist. His research focus is antimicrobial stewardship. He is actively engaged in developing novel approaches to trainee education in antimicrobial stewardship, and is interested in engaging allies across various disciplines in stewardship activities.

Selected Publications

Genomic Surveillance Reveals Diversity of Multidrug-Resistant Organism Colonization and Infection: A Prospective Cohort Study in Liver Transplant Recipients. Macesic N, Gomez-Simmonds A, Sullivan SB, Giddins MJ, Ferguson SA, Korakavi G, Leeds D, Park S, Shim K, Sowash MG, Hofbauer M, Finkel R, Hu Y, West J, Toussaint NC, Greendyke WG, Miko BA, Pereira MR, Whittier S, Verna EC, Uhlemann AC. Clin Infect Dis. 2018 Apr 28. [Epub ahead of print]

Comparing the Bioburden Measured by Adenosine Triphosphate (ATP) Luminescence Technology to Contact Plate-Based Microbiologic Sampling to Assess the Cleanliness of the Patient Care Environment. Salsgiver E, Bernstein D, Simon MS, Greendyke W, Jia H, Robertson A, Salter S, Schuetz AN, Saiman L, Furuya EY, Calfee DP. Infect Control Hosp Epidemiol. 2018 May;39(5):622-624.

Knowledge, Attitudes, and Practices Regarding Antimicrobial Use and Stewardship Among Prescribers at Acute-Care Hospitals. Salsgiver E, Bernstein D, Simon MS, Eiras DP, Greendyke W, Kubin CJ, Mehta M, Nelson B, Loo A, Ramos LG, Jia H, Saiman L, Furuya EY, Calfee DP. Infect Control Hosp Epidemiol. 2018 Mar;39(3):316-322.

Exploring the nurses' role in antibiotic stewardship: A multisite qualitative study of nurses and infection preventionists. Carter EJ, Greendyke WG, Furuya EY, Srinivasan A, Shelley AN, Bothra A, Saiman L, Larson EL. Am J Infect Control. 2018 May;46(5):492-497.

Exploring the Role of the Bedside Nurse in Antimicrobial Stewardship: Survey Results From Five Acute-Care Hospitals. Greendyke WG, Carter EJ, Salsgiver E, Bernstein D, Simon MS, Saiman L, Calfee DP, Furuya EY. Infect Control Hosp Epidemiol. 2018 Mar;39(3):360-362

Clostridium Difficile Infection in Acute Care Hospitals: Systematic Review and Best Practices for Prevention. Louh IK, Greendyke WG, Hermann EA, Davidson KW, Falzon L, Vawdrey DK, Shaffer JA, Calfee DP, Furuya EY, Ting HH. Infect Control Hosp Epidemiol. 2017 Apr;38(4):476-482.

Outbreak of Rapidly Growing Nontuberculous Mycobacteria Among Patients Undergoing Cosmetic Surgery in the Dominican Republic. Green DA, Whittier S, Greendyke W, Win C, Chen X, Hamele-Bena D. Ann Plast Surg. 2017 Jan;78(1):17-21.

Understanding Barriers to Optimal Cleaning and Disinfection in Hospitals: A Knowledge, Attitudes, and Practices Survey of Environmental Services Workers. Bernstein DA, Salsgiver E, Simon MS, Greendyke W, Eiras DP, Ito M, Caruso DA, Woodward TM, Perriel OT, Saiman L, Furuya EY, Calfee DP. Infect Control Hosp Epidemiol. 2016 Dec;37(12):1492-1495.

Infectious Complications and Vaccinations in the Posttransplant Population. Greendyke WG, Pereira MR. Med Clin North Am. 2016 May;100(3):587-98.