Dr Doug Lewis

Dr Doug Lewis


Role: Obstetrics, Hospital Medicine/Hospitalist. Associate Director VCFM Residency Associate Director VC Adult CF Speciality Clinic.

University of Kansas at Wichita
Residency, Family Medicine

University of Kansas School of Medicine
Medical School
Certified in Family Medicine
KS State Medical License


In medical practice for 20 years I have been in private practice as a family physician, a hospitalist, a full time faculty member, and a Cystic Fibrosis (CF) specialist. 

I am a physician in my day job, which I work around my priorities as a husband, father, and triathlete.

I began competing in triathlons in 2005 and as I worked up to the Ironman distance, discovered that had issues with fluid and sodium balance. This led to carrying out research projects involving endurance athletes and more specifically work in Cystic Fibrosis, which in turn led to a relationship with Andy Blow and Precision Hydration. 

I now am the director of a CF clinic in Kansas, and I continue to compete in triathlon with 12 full distance Ironmans under my belt. As an Ironman Legacy Athlete, I will be competing in the Kona Ironman World Championships in 2025.



University of Kansas at Wichita, Residency

University of Kansas School of Medicine Medical School

MidAmerica Nazarene University


    Published Work

    Lewis, DP; Hoffman, MD; Stuempfle, KJ; Owen, BE; Rogers, IR; Verbalis, JG; Hew-Butler, T. The Need for Salt: Does a Relationship Exist between Cystic Fibrosis and Exercise-Associated Hyponatremia? J Strength Cond Res 2014 Mar;28(3):807-13. PMID: 23897018.

    Owen, BE, Rogers, IR, Hoffman, MD, Steumpfle, KJ, Lewis, D, Fogard, K, Verbalis, JG, Hew-Butler, T. “Efficacy of Oral vs. Intravenous Hypertonic Saline in Runners with Hyponatremia.” The Journal of Science and Medicine in Sport 2014 Sep;17(5):457-62. PMID: 24148616. 

    Hew-Butler T, Rosner MH, Fowkes-Godek S, Dugas JP, Hoffman MD, Lewis DP, Maughan RJ, Miller KC, Montain SJ, Rehrer NJ, Roberts WO, Rogers IR, Siegel AJ, Stuempfle KJ, Winger JM, Verbalis JG. “Statement of the Third International Exercise-Associated Hyponatremia Consensus Development Conference, Carlsbad, California, 2015.” Clin J Sport Med 2015 Jul;25(4):303-320. PMID: 26102445.

    Lewis, D. “Helping patients with cystic fibrosis live longer.” J Fam Pract 2016 Mar;65(3):188-94. PMID: 27158690. 

    Lewis, DP. “Exercise Associated Hyponatremia in Cystic Fibrosis.” Kansas Journal of Medicine Nov 2016.

    Lewis, D, Blow, A, Tye, J, Hew-Butler, T. “Considering exercise-associated hyponatremia as a continuum.” BMJ Case Reports March 2018. PMID: 29523608.

    Lewis, DP. Cystic Fibrosis in Primary Care: An Essential Guide to a Complex, Multi-System Disease. Springer Nature. December 2019.