James J. Fenton
James J. Fenton, MD, is a pulmonologist at National Jewish Health. Dr. Fenton is in the Division of Pulmonary, Critical Care and Sleep Medicine.
National Jewish Health South Denver
Associate Professor
Division of Pulmonary, Critical Care & Sleep Medicine
Department of Medicine
Previously a 5280 Top Doctor (13 years)
Best Doctors in America® 2019-2020 — Best Doctors, Inc.
America’s Top Doctors 2020 — Castle Connolly Medical, Ltd.

Special Interests

Research Interests

Ventilation of spinal cord injured patients.


Ohio State University College of Medicine, MD
University of Notre Dame, BS
University of Florida Health Sciences Center (Gainesville), Internal Medicine
Lahey Clinic Medical Center, Interventional Pulmonology
University of Florida Health Sciences Center (Gainesville), Pulmonary and Critical Care

Awards & Recognition

2014 and 2015: Best Doctors in America, Best Doctors, Inc.
2006-2011:Denver's 5280 Magazine, “Top Doctors”
1996-2005: Chest Journal, Manuscript Reviewer
Fellow, American College Chest Physicians (FCCP)

Board Certification

1996, 2006: Pulmonary Medicine
1997, 2007: Critical Care Medicine

Professional Memberships

Fellow, American College of Chest Physicians


Fenton, J “Chest X-Ray” in Cardiology Secrets 2nd Edition Adair, O; Hanley & Belfus, Philadelphia. 2001.

Mastin ST, Drane WE, Harman, EM, Fenton, JJ, Quesenberry, L. FDG SPECT in patients with Lung Masses. Chest, 1999; 115:1012-1017.

Fenton JJ, Beamis JF. Laser Bronchoscopy. In, Beamis JF, Mathur PN eds. Interventional Pulmonology. New York: McGraw-Hill, 1999; 43-67.

FentonJJ, Cicale MF. Sigmoid Diverticular Perforation Complicating Lung Transplantation. J Heart Lung Transpl 1997 Jun: 16(6):681-5.

Hospital Affiliations

  • Craig Hospital
  • Littleton Adventist Hospital
  • Porter Adventist Hospital
  • Select Specialty Hospital
  • Swedish Medical Center

Teaching & Professional Positions

2007-Present: Director, Comprehensive Lung Cancer Program, Swedish Medical Center
2006-Present: Respiratory Care Director, Craig Hospital

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Contact Information

  • Office: 303.788.8500
  • Fax: 303.788.8505

Patient Ratings

The Patient Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey. This survey is about the patient care experience and does not address crucial characteristics like medical decision-making, prescribing the best therapy, and patient outcomes.

Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.

Provider showed concern


Spoke using clear language

Provider explained things clearly

Amount of time spent with you

Provider included you in decisions

Confidence in your doctor

Likelihood of recommending this provider


Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.

National Jewish Health PatientFebruary, 2023
Was pleased with the quality of this latest appt w/ Dr. Fenton.

National Jewish Health PatientFebruary, 2023
*Dr. Fenton is one of the finest physicians & persons in the medical field.

National Jewish Health PatientAugust, 2021
Felt that the Dr had my interest at the forefront

National Jewish Health PatientAugust, 2021
Very concise.

National Jewish Health PatientAugust, 2021
I don't think the care provider was trying to understand what I was trying to say. His attitude was I am right, now do as I say.

National Jewish Health PatientAugust, 2021
*Dr. Fenton is a gem!

National Jewish Health PatientJuly, 2021
Dr. Fenton explained my breathing issues and plan of treatment very clearly. He took time to make sure I understood everything. I would definitely recommend him to family and friends.

National Jewish Health PatientJune, 2021
dr Fenton always looks me in the eye when we speak, and he listens very accurately. He lets me help determine if or what medications need adjusting. He is most knowledgeable about my condition!

National Jewish Health PatientJune, 2021
Dr. Fenton is the best

National Jewish Health PatientMay, 2021
Dr Fenton is not only a phenomenal physician but also a fantastic person

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