Chad Ryan Marion, DO, PhD

Instructor in Internal Medicine (Pulmonary); Instructor of Medicine (Pulmonary)

Departments & Organizations

CPIRT - Pulmonary Infection Research and Treatment

Yale Medicine


Residency: Cleveland Clinic Foundation
Mentor: Criag Roy, PhD and Charles Dela Cruz, MD, PhD
Research Project: "Chitinase-3-like1 as a Immune Modulator in Gram Negative Pneumonia"
Grants & Awards:

  1. T32 Training Grant 2012-present
  2. Gold Humanism Medicine Society 2013
  3. ATS Abstract Scholarship Award 2014

Education & Training

PhD Yale University, Investigative Medicine (2015)
DO Lake Erie College (2008)
BA University of North Carolina (1998)
Clinical Fellow in Medicine Yale University School of Medicine
Resident Cleveland Clinic
Internship Cleveland Clinic
Board Certification AB of Internal Medicine, Internal Medicine (2011)
Board Certification AB of Internal Medicine, Pulmonary Disease (2016)

Honors & Recognition

  • American Thoracic Society Travel AwardAmerican Thoracic Society (2014)


  • Chitinase 3-like 1 (Chi3l1) Augments Bacterial Clearance While Suppressing Neutrophilic Pulmonary Inflammation In Pseudomonas Pneumonia San Diego, CA, United States (2014 - 2014)

  • Chitinase 3-like 1 limits inflammation while maintaining bacterial killing in Pseudomonas Pneumonia United States (2014 - 2014)

  • Regulation of Bacterial Killing, Pulmonary Inflammation and Host Damage During Gram Negative Pneumonia United States (2013 - 2013)

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Contact Info

Chad Ryan Marion, DO, PhD
Mailing Address
300 Cedar St

New Haven, CT 06520

Dela Cruz Laboratory