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Ryan K. Lehmann, DO, FACS, FASMBS

Clinical Associate Professor of Surgery - Gastrointestinal Surgery

Current Positions

  • Clinical Associate Professor of Surgery - Gastrointestinal Surgery, University of Iowa
  • Medical Director, 2RC, University of Iowa
  • Staff Surgeon, Veterans Affairs Medical Center, Iowa City, Iowa

Education

  • BS in Biochemistry, University of Missouri, Columbia, Missouri
  • DO, Kirksville College of Osteopathic Medicine, Kirksville, Missouri
  • Internship in General Surgery, Madigan Army Medical Center, Ft. Lewis, Washington
  • Resident in General Surgery, Madigan Army Medical Center, Ft. Lewis, Washington
  • Fellow in Bariatric Surgery, St. Alexius Hospital, St. Louis, Missouri

Licenses & Certifications

  • Focus Practice Designation in Metabolic and Bariatric Surgery, American Board of Surgery
  • Diplomate, American Board of Obesity Medicine
  • Iowa Medical License, Iowa Board of Medicine, Iowa
  • Fellow, American Society for Metabolic and Bariatric Surgery
  • Fellow, American College of Surgeons
  • Board Certified, General Surgery, American Board of Surgery
  • Certified, Advanced Cardiac Life Support, American Heart Association
  • Certified, Basic Life Support, American Heart Association
  • State of Missouri Medical License (Inactive status)

Selected Publications

  • Siegel, L., Nau, P., Smith, J., Lehmann, R. A093 Concurrent Hiatal Hernia Repair and Roux-en-Y Gastric Bypass is a Safe and Effective Treatment in Populations with Obesity. Surgery for Obesity and Related Diseases. Epub 2024 Jun 10. Volume 20, Issue 6, S53. DOI:https://doi.org/10.1016/j.soard.2024.04.173.
  • Nikolian VC, Camacho D, Earle D, Lehmann R, Nau P, Ramshaw B, Stulberg J. Development and preliminary validation of a new task-based objective procedure-specific assessment of inguinal hernia repair procedural safety. Surg Endosc. 2024 Mar;38(3):1583-1591. DOI: 10.1007/s00464-024-10677-2. Epub 2024 Feb 8. PMID: 38332173.
  • Nau P, Worden E, Lehmann R, Kleppe K, Mancini GJ, Mancini ML, Ramshaw B, Woods MS. (2023) Using video-based assessment (VBA) to document fellow improvement in safely completing the jejunojejunostomy portion of laparoscopic Roux-en-Y gastric bypass (RYGB) surgery. Surg Endosc. 2023 Nov;37(11):8853-8860. doi: 10.1007/s00464-023-10425-y. Epub 2023 Sep 27. PMID: 37759145.
  • Nau P, Worden E, Lehmann R, Kleppe K, Mancini GJ, Mancini ML, Ramshaw B. (2023) Global assessment of surgical skills (GASS): validation of a new instrument to measure global technical safety in surgical procedures. Surgical Endoscopy 2023 Jul 13. doi: 10.1007/s00464-023-10116-8. PMID: 37442836.
  • Prakash, S., Lehmann, R. & Mokadem, M. (2023). Candy cane syndrome presenting as refractory GERD 15 years after Roux-en-Y gastric bypass. Gastrointestinal Endoscopy 97 (6) AB59-AB60. DOI: 10.1016/j.gie.2023.04.116.
  • Prakash, S., Saavedra, R., Lehmann, R. & Mokadem, M. (2023). Candy cane syndrome presenting with refractory heartburn 15 years after Roux-en-Y bypass. Journal Of Surgical Case Reports 2023 (3). PMID: 36942285 DOI: 10.1093/jscr/rjad130.
  • Talledo, O., Carroll, R., Worden, E., Greenwood, A. M., Alexander, H., Karlsdottir, B., Lehmann, R., Peoples, R., Smith, J., Thompson, D., Zhang, K. A. & Nau, P. (2023). The impact of COVID-19 on medium term weight loss and comorbidities in patients undergoing bariatric surgery and its association with psychological wellbeing. Surgical Endoscopy And Other Interventional Techniques. 37(2):1537-1542. DOI: 10.1007/s00464-022-09377-6. Epub 2022 Jun 22. PMID: 35731301; PMCID: PMC9215154.
  • Carroll, R., Goffredo, P., Steers, G., Cetindag, I., Lehmann, R., Hrabe, J., Hassan, I. & Shelton, J. (2021). Robotic surgery training during general surgery residency: a survey comparing attitudes towards a robotic training curriculum within general surgery, urology, and OBGYN residents and attendings. Journal of Robotic Surgery. DOI: 10.1007/s11701-021-01346-w. PMID: 34853953.
  • Hart, A., Goffredo, P., Carroll, R., Lehmann, R., Nau, P., Smith, J., Ahad, S., Bao, W. & Hassan, I. (2021). Optimizing Bariatric Surgery outcomes: the impact of preoperative elevated hemoglobin A1c levels on composite perioperative outcome measures. Surgical Endoscopy 35 (8) 4618-4623. DOI: 10.1007/s00464-020-07887-9. PMID: 32789589.
  • Lehmann, R. K., Public Education Committee. (2020) Benefits of Weight Loss Surgery. Website of American Society for Metabolic and Bariatric Surgery.