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Jason Kolfenbach MD

Fellowship Program Director, Assistant Professor of Medicine


Jason Kolfenbach, MD, is a clinician-educator currently involved in patient care and clinical education of fellows at the University of Colorado Hospital. In addition, he works with Dr. Collier in the University’s Scleroderma Clinic. As a Co-Investigator of the SERA study, he has an interest in the determinants of RA development and the transition from early inflammatory arthritis to established clinical disease.





2015 - present

University of Colorado, Rheumatology Fellowship Program Director

2010 - present

University of Colorado, Assistant Professor of Medicine


University of Colorado Health Sciences, Rheumatology Fellowship Program


University of Colorado at Denver, Clinical Science Masters program


University of Colorado Health Sciences, Internal Medicine Residency Program


Roy J. and Lucille A. Carver College of Medicine, Medical Degree


Undergraduate degree: B.S. in Exercise Science (College of Liberal Arts)


Kolfenbach J, Deane K, Derber L: “A Prospective Approach to Investigating the Natural History of Pre-Clinical Rheumatoid Arthritis (RA) Using First-Degree Relatives of Probands with RA”. Arthritis Rheum. 2009 Dec 15;61(12):1735-42.


Kolfenbach J, Deane K, Derber L: “Association of Rheumatoid Arthritis (RA)-Related Autoimmunity and Joint Findings in Unaffected at-Risk Populations”. Abstract, 2009 American College of Rheumatology Annual Scientific Meeting.


Kolfenbach J, Deane K, Derber L: “Autoimmunity to Peptidyl Arginine Deiminase Type 4 Precedes Clinical Onset of Rheumatoid Arthritis”. Accepted for publication, Arthritis & Rheumatism, April 2010.


Horner B, Kolfenbach J, West S: “Neuromyelitis Optica: Implications for rheumatology in suspected autoimmune myelitis”. Poster presentation, University of Colorado Medical Student Capstone Poster Presentation (manuscript in progress, primary author).