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Mark Niedfeldt, M.D.

Family Medicine/Sports Medicine

Dr. Mark Niedfeldt grew up in Wisconsin and loves living in Mequon with his wife and three children. He graduated from the University of Wisconsin-Whitewater magna cum laude and went on to earn his M.D. from the Medical College of Wisconsin. He completed his residency in Family Medicine through the Medical College of Wisconsin’s program at St. Mary’s Hospital, where faculty and peers nominated him as Chief Resident. He subsequently completed a fellowship in Primary Care Sports Medicine at MCW.

He has served the residents of the Milwaukee area for over 25 years years as Associate Professor, clinician, teacher, researcher, and Associate Director of the Primary Care Sports Medicine Fellowship program at the Medical College of Wisconsin.

Dr. Niedfeldt has published original articles in several medical journals, written numerous reviews, abstracts, and book chapters and has lectured at medical meetings regionally, nationally, and internationally. Although no longer a full-time faculty member, he continues to teach medical students from gross anatomy lectures and laboratory through clinical rotations, along with residents and sports medicine fellows at the Medical College of Wisconsin where he is an Associate Clinical Professor.

With his avid interest in sports medicine and athletics, Dr. Niedfeldt enjoys serving as team physician for the Milwaukee Brewers, the US National Snowboarding and Freeskiing Teams, Wisconsin Lutheran College, and Concordia University. He previously worked with the Milwaukee Bucks, Milwaukee Wave, Milwaukee Wave United, Milwaukee Rampage and the Milwaukee Ballet.

Dr. Niedfeldt is currently on the medical staff at Froedtert Memorial Lutheran Hospital, Columbia St. Mary’s-Milwaukee and Ozaukee as well as the Orthopaedic Hospital of Wisconsin.

RECENT AWARDS 2007-2023 The Best Doctors in America 2008-09 Medical College of Wisconsin Outstanding Medical Student Teacher 2007-08 Preceptor of the Year 2002 Outstanding Recent Alumni Award – U.W.-Whitewater 2001 The Learning Resources Innovative Educational Project Award 2001 Innovative Educational Project Award


In his spare time, you might see Dr. Niedfeldt biking around town, on a running trail, attending one of his daughter’s activities, or heading to Road America for some track time.


  • Niedfeldt, MW. Anabolic Steroid Effect on the Liver. Curr Sports Med Rep. 2018 Mar;17(3):97-102.

  • Niedfeldt, MW. Head injuries, heading, and the use of headgear in soccer. Curr Sports Med Rep. 2011 Nov-Dec;10(6):324-9.

  • Kroncke EL, Niedfeldt MW, Young CC. Use of protective equipment in adolescents in inline skating, skateboarding, and snowboarding. Clin J Sport Med 2008; 18(1): 38-43.

  • Porter, EB, Young, CC, Niedfeldt MW, Gottschlich LN. Sport-specific Injuries and Medical Problems of Figure Skaters. WMJ 2007; 106(6): 330-334.

  • Young CC, Niedfeldt MW, Gottschlich LN, Peterson CS, Gammons, MR. Infectious disease and the extreme sport athlete. Clin Sports Med 2007; 26(3): 473-87.

  • Cheng LY, Niedfeldt MW, Lachacz J, Raasch WG. Acute, isolated lateral compartment syndrome after ankle inversion injury. Clin J Sport Med 2007; 17(2):151-2

  • Molis, MA, Niedfeldt MW, Ertl, JP, Kovacs, G. Ankle Impingement Syndrome. 7/5/06.

  • Young CC, Niedfeldt MW, Morris GA, Eerkes KJ. Clinical Examination of the Foot and Ankle. Prim Care Clin Office Pract 2005; 32:105-32.

  • Niedfeldt MW. Managing Hypertension in Athletes and Physically Active Patients. American Family Physician 2002; 66:445-452.

  • Bedinghaus JM, Niedfeldt MW. Over-the-Counter Foot Remedies. American Family Physician 2001; 64:791-6,803-4.

  • Young CC, Rutherford DS, Niedfeldt MW. Treatment of Plantar Fasciitis. American Family Physician 2001; 63(3):467-474, 477-478.



  • Niedfeldt, MW, Cheng, LY. The Hypertensive Athlete. In Madden C, Putukian M, Young C, McCarty E (eds) Netter’s Sports Medicine, 3rd Ed. Saunders Elsevier, 2023.

  • Niedfeldt, MW. Hypertension in Athletes. In Davis P, Davis M, Ross D (eds) Expert Guide to Sports Medicine. American College of Physicians, 2005.

  • Young CC, Niedfeldt MW. Achilles Tendinitis. In Bracker MD (ed) The 5-Minute Sports Medicine Consult. Lippincott Williams and Wilkins, 2000.

  • Niedfeldt MW. Medical Problems in Athletes. In Johnson R (ed) Sports Medicine in Primary Care. Williams and Wilkins, 2000.

  • Niedfeldt MW. Patellofemoral Pain Syndrome. In Rakel RE (ed), Saunders Manual of Medical Practice 2nd Ed. Saunders, 2000.

  • Young CC, Niedfeldt MW. Rheumatology and Sports Medicine. In Current Practice of Medicine 2000.

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