Forest W. Arnold, D.O., M.Sc., FIDSA

Forest W. Arnold, D.O., M.Sc., FIDSA

Forest Arnold, D.O.

Forest W. Arnold, D.O., M.Sc., FIDSA

  • Associate Professor of Medicine
  • University of Louisville Hospital Epidemiologist
UofL Physicians Outpatient Center
401 East Chestnut Street, Ste. 310
Louisville, KY 40202

502-852-3836 - Academic Office
502-588-4600 - Patient Appointments

Clinical Expertise
Infectious Diseases


Board Certifications

  • American Board of Internal Medicine -
    Internal Medicine / Infectious Diseases

Education and Training

  • Medical School: West Virginia School of Osteopathic Medicine
  • Internship: West Virginia University
  • Residency: University of Tennessee Medical Center
  • Fellowship: University of Louisville
  • M.Sc.: University of Louisville

Featured Publications

  • Arnold FW. How Antibiotics Should be Prescribed to Hospitalized Elderly Patients with Community-Acquired Pneumonia. Drugs Aging. 2017 Jan;34(1):13-20. doi: 10.1007/s40266-016-0423-9. PubMed PMID: 27928779.
  • Wiemken TL, Kelley RR, Fernandez-Botran R, Mattingly WA, Arnold FW, Furmanek SP, Restrepo MI, Chalmers JD, Peyrani P, Cavallazzi R, Bordon J, Aliberti S, Ramirez JA. Using cluster analysis of cytokines to identify patterns of inflammation in hospitalized patients with community-acquired pneumonia: a pilot study. Univ Louisville J Respir Infect. 2017;1(1):3-11. doi: 10.18297/jri/vol1/iss1/1/. Epub 2017 Jan 30. PubMed PMID: 28393141; PubMed Central PMCID: PMC5382869.
  • Moffett BK, Panchabhai TS, Nakamatsu R, Arnold FW, Peyrani P, Wiemken T, Guardiola J, Ramirez JA. Comparing posteroanterior with lateral and anteroposterior chest radiography in the initial detection of parapneumonic effusions. Am J Emerg Med. 2016 Dec;34(12):2402-2407. doi: 10.1016/j.ajem.2016.09.021. Epub 2016 Sep 14. PubMed PMID: 27793503.
  • Arnold FW, Summersgill JT, Ramirez JA. Role of Atypical Pathogens in the Etiology of Community-Acquired Pneumonia. Semin Respir Crit Care Med. 2016 Dec;37(6):819-828. Epub 2016 Dec 13. PubMed PMID: 27960206.
  • Wuerth BA, Bonnewell JP, Wiemken TL, Arnold FW. Trends in Pneumonia Mortality Rates and Hospitalizations by Organism, United States, 2002-2011(1). Emerg Infect Dis. 2016 Sep;22(9):1624-7. doi: 10.3201/eid2209.150680. PubMed PMID: 27532154; PubMed Central PMCID: PMC4994371.
  • Egger ME, Myers JA, Arnold FW, Pass LA, Ramirez JA, Brock GN. Cost effectiveness of adherence to IDSA/ATS guidelines in elderly patients hospitalized for Community-Aquired Pneumonia. BMC Med Inform Decis Mak. 2016 Mar 15;16:34. doi: 10.1186/s12911-016-0270-y. PubMed PMID: 26976388; PubMed Central PMCID: PMC4791973.
  • Arnold FW, Bordon J, Fernandez-Botran R, Rane MJ, Uriarte SM, Kelley R, Wiemken TL, Peyrani P, Ramirez JA; Community-Acquired Pneumonia Inflammatory Study Group.. Macrolide Use and Neutrophil Function/Cytokine Levels in Hospitalized Patients with Community-Acquired Pneumonia: A Pilot Study. Lung. 2016 Feb;194(1):155-62. doi: 10.1007/s00408-015-9822-7. Epub 2015 Nov 9. PubMed PMID: 26553025.
  • Cavallazzi R, Wiemken T, Arnold FW, Luna CM, Bordon J, Kelley R, Feldman C, Chalmers JD, Torres A, Ramirez J. Outcomes in patients with community-acquired pneumonia admitted to the intensive care unit. Respir Med. 2015 Jun;109(6):743-50. doi: 10.1016/j.rmed.2015.04.007. Epub 2015 Apr 24. PubMed PMID: 25956021.
  • Smith AM, Wuerth BA, Wiemken TL, Arnold FW. Prevalence of Clostridium difficile infection presenting to US EDs. Am J Emerg Med. 2015 Feb;33(2):238-43. doi: 10.1016/j.ajem.2014.11.023. Epub 2014 Nov 26. PubMed PMID: 25488337.
  • Arnold FW, Wojda B, Truelove D, Nakamatsu R, Wiemken TL, Seshabhattar P. DOES PAYER STATUS PREDICT CD4 CELL COUNT AND HIV VIRAL LOAD? Physician Leadersh J. 2014 Sep-Oct;1(1):44-6, 48-9. PubMed PMID: 26211196.