Dr Doug Lewis

Dr Doug Lewis reviewer

Obstetrics, Hospital Medicine/Hospitalist Associate Director


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

He is a physician in his day job, which he works around his priorities as a husband, father, and triathlete.

Doug began competing in triathlons in 2005 and as he worked up to the Ironman distance, discovered that he 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 Fuel & Hydration. 

He is now the director of a CF clinic in Kansas, and continues to compete in triathlon with 12 full distance Ironmans under his belt. As an Ironman Legacy Athlete, he will be competing in the Kona Ironman World Championships in 2025.

Medical C.V.

University of Kansas at Wichita - Residency, Family Medicine

University of Kansas School of Medicine

Certified in Family Medicine

KS State Medical License


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.

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