James K. O'Brien, MD, FACP, FCCP

James K. O'Brien
James K. O'Brien, MD, is a pulmonologist at National Jewish Health. Dr. O'Brien is in the Section of Critical Care Medicine and Department of Medicine.
Associate Professor
Department of Medicine
Division of Pulmonary, Critical Care & Sleep Medicine
Section of Critical Care Medicine

Special Interests

Clinical research and teaching interests are in COPD, alpa-1-antitrypsin deficiency, asthma, critical care, and practical medical ethics.


Awards & Recognition

Former visiting scholar at the Penn Center for Bioethics, Philadelphia, PA

Board Certification

Pulmonary, Critical Care, Sleep Medicine (ABSM)

Professional Memberships

Fellow in the American College of Physicians, Fellow in the American College of Chest Physicians, and member of American Thoracic Society         

Hospital Affiliations

  • Rose Medical Center
  • St. Joseph Hospital - Denver
  • Swedish Medical Center

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Contact Information

  • Office: 877.225.5654



  • National Jewish Health Main Campus
    1400 Jackson St.
    Denver, CO 80206

  • Saint Joseph Hospital
    1835 Franklin Street Denver, CO 80218

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 PatientJuly, 2020
Dr. O'Brien is the best doctor I have ever known. He has successfully navigated through some very severe an complex medical problems that I have experienced. He has an incredible, diverse knowledge base and I appreciate that he does not talk down to me when discussing complicated issues.

National Jewish Health PatientJune, 2020
In my opinion. Dr. O'Brien is an outstanding physician.

National Jewish Health PatientJune, 2020
Dr. O'Brien is a very thoughtful doctor who actually listens to what I have to say. He includes me in reasoning behind each medication or new therapy. He goes beyond what is expected of him. He treats others as fellow humans, and speaks to them as they are his friend or fellow health care worker. [off topic]

National Jewish Health PatientMay, 2020
I loved being able to speak to my Doctor, as I live 7 hrs away.

National Jewish Health PatientApril, 2020
Sometimes when I get a copy of the visit, things are mentioned that were not discussed with me.

National Jewish Health PatientApril, 2020
I love National Jewish and all the doctors/nurses/technicians that I have encountered. There are not word enough for me to praise all of them and the sericin National Jewish provides. You all kept me going and give me hope.

National Jewish Health PatientMarch, 2020
*Dr. O'Brien is a great and concerned physician. I always feel at ease presenting my problems regarding my health, and he is willing to LISTEN and addresses my concerns.

National Jewish Health PatientMarch, 2020
I trust Dr. O'Brien

National Jewish Health PatientJanuary, 2020
This provider was fantastic! He spent a great amt. of time with me!