John W. Cromwell, MD

Portrait
Associate Chief Medical Officer & Director of Surgical Quality and Safety
Director, Division of Gastrointestinal Surgery, Minimally-Invasive and Bariatric Surgery
Clinical Professor of Surgery - Gastrointestinal, Minimally invasive and Bariatric Surgery

Contact Information

Primary Office
4601 JCP
200 Hawkins
Iowa City, IA 52242
319-384-7359

Education

BS, Chemistry, Nebraska Wesleyan University
MD, University of Minnesota Medical School
Fellow, Surgical Infectious Disease, University of Minnesota Hospital & Clinics
Fellow, Research, University of Minnesota Cancer Center
Resident, General Surgery, University of Minnesota Hospital & Clinics
Fellow, Colon and Rectal Surgery, University of Texas Affiliated Hospitals
Post Graduate, Harvard University School of Public Health
Post Graduate, Johns Hopkins University School of Medicine
Post Graduate, University of Iowa Hospitals & Clinics

Licensure and Certifications

Iowa Medical License - Iowa Board of Medicine
Board Certified, Colon & Rectal Surgery - American Board of Colon & Rectal Surgery
Diplomate - American Board of Colon and Rectal Surgery
Diplomate - American Board of Surgery
Board Certified, General Surgery - American Board of Surgery

Research Summary

Dr. Cromwell's research group focuses on the application of artificial intelligence, machine learning, predictive analytics, and medical devices to improving the quality and safety of surgical care. Non-invasive devices for predicting postoperative ileus and for screening for delirium are currently undergoing commercialization.

Publications

Shinozaki, G., Chan, A. C., Sparr, N. A., Zarei, K., Gaul, L. N., Heinzman, J. T., Robles, J., Yuki, K., Chronis, T. J., Ando, T., Wong, T., Sabbagh, S., Weckmann, M. T., Lee, S., Yamada, T., Karam, M. D., Noiseux, N. O., Shinozaki, E. & Cromwell, J. W. (2018). Delirium detection by a novel bispectral electroencephalography device in general hospital. Psychiatry and clinical neurosciences, 72(12), 856-863. PMID: 30246448.

Lee, S., Yuki, K., Chan, A., Cromwell, J. & Shinozaki, G. (2018). The point-of-care EEG for delirium detection in the emergency department. The American journal of emergency medicine. PMID: 30340987.

Sherman, S. K., Hrabe, J. E., Huang, E., Cromwell, J. W. & Byrn, J. C. (2018). Prospective Validation of the Iowa Rectal Surgery Risk Calculator. Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract, 22(7), 1258-1267. PMID: 29687422.

Pedersen, M., Cromwell, J. & Nau, P. (2017). Sarcopenia is a Predictor of Surgical Morbidity in Inflammatory Bowel Disease. Inflammatory bowel diseases. PMID: 28604415.

Armstrong, J. G., Weigel, P. A., Cromwell, J. W. & Byrn, J. C. (2016). Postoperative complications and patient satisfaction: does payer status have an impact?. American journal of surgery, 211(6), 1099-1105.e1. PMID: 26542189.

Charlton, M. E., Hrabe, J. E., Wright, K. B., Schlichting, J. A., McDowell, B. D., Halfdanarson, T. R., Lin, C., Stitzenberg, K. B. & Cromwell, J. W. (2016). Hospital Characteristics Associated with Stage II/III Rectal Cancer Guideline Concordant Care: Analysis of Surveillance, Epidemiology and End Results-Medicare Data. Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract, 20(5), 1002-11. PMID: 26658793.

Bhama, A. R., Charlton, M. E., Schmitt, M. B., Cromwell, J. W. & Byrn, J. C. (2015). Factors associated with conversion from laparoscopic to open colectomy using the National Surgical Quality Improvement Program (NSQIP) database. Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland, 17(3), 257-64. PMID: 25311007.

Miner, L., Bolding, P., Hilbe, J., Goldstein, M., Hill, T., Nisbet, R., Walton, N. & Miner, G. (2014). Decisioning Systems/Platforms coupled with Predictive Analytics in a real Hospital Setting....A Model for the World. In Healthcare Informatics: Practical Predictive Analytics in Medicine. (1) Academic Press.

Charlton, M. E., Mattingly-Wells, L. R., Marcet, J. E., McMahon Waldschmidt, B. C. & Cromwell, J. W. (2014). Association between surgeon characteristics and their preferences for guideline-concordant staging and treatment for rectal cancer. American Journal of Surgery. PMID: 24997492.

Hrabe, J. E., Sherman, S. K., Charlton, M. E., Cromwell, J. W. & Byrn, J. C. (2014). Effect of BMI on outcomes in proctectomy. Disease of the Colon and Rectum, 57(5), 608-15. PMID: 24819101.

Sherman, S. K., Hrabe, J. E., Charlton, M. E., Cromwell, J. W. & Byrn, J. C. (2014). Development of an Improved Risk Calculator for Complications in Proctectomy. (Vols. 18). (5), pp. 986-994. Journal of Gastrointestinal Surgery. PMID: 24395071.

Kapadia, M. R., Cromwell, J. W. (2013). Concepts in Surgery of the Anus, Rectum, and Pilonidal Region. In C. Scott-Conner (Eds.) Chassin’s Operative Strategy in General Surgery: An Expositive Atlas, 4th. (4) Springer.

Fang, S. H., Cromwell, J. W., Wilkins, K. B., Eisenstat, T. E., Notaro, J. R., Alva, S., Bustami, R. & Chinn, B. T. (2012). Is the abdominal repair of rectal prolapse safer than perineal repair in the highest risk patients? An NSQIP analysis. Disease of the Colon and Rectum, 55(11), 1167-72. PMID: 23044678.

Schey, R., Cromwell, J. W. & Rao, S. S. (2012). Medical and surgical management of pelvic floor disorders affecting defecation. The American Journal of Gastroenterology, 107(11), 1624-33. PMID: 22907620.

Schey, R., Cromwell, J. W. & Rao, S. C. (In Press). Medical & Surgical Management of Defecatory Disorders. American Journal of Gastroenterology. DOI: 10.1038.

Cromwell, J. W. (2011). Chapter 48: Subtotal Colectomy with Ileostomy and Hartmann’s Pouch. In C. Scott-Conner , J. Hoballah (Eds.) Operative Dictations in General and Vascular Surgery. (2) Springer.

Cromwell, J. W. (2011). Chapter 50: Total Proctocolectomy with Ileoanal Reservoir and Ileoanal Anastomosis. In C. Scott-Conner , J. Hoballah (Eds.) Operative Dictations in General and Vascular Surgery. (2) Springer.

Cromwell, J. W. (2011). Chapter 52: Total Proctocolectomy and Ileostomy. In C. Scott-Connor , J. Hoballah (Eds.) Operative Dictations in General and Vascular Surgery. (2) Springer.

Cromwell, J. W. (2011). Review of The ASCRS Textbook of Colon and Rectal Surgery. www.doody.com.

Cromwell, J. W., Santiago, L. T. & Marcet, J. E. (2006). Treatment of rectal cancer. The New England Journal of Medicine, 355(23), 2487. PMID: 17162760.

Zhang, X., Cromwell, J. W., Kunjummen, B. D., Yee, D. & Garcia-Aguilar, J. (2003). The alpha2 and alpha3 integrins are required for morphologic differentiation of an intestinal epithelial cell line. Surgery, 133(4), 429-37. PMID: 12717361.

Friel, C. M., Cromwell, J. W., Marra, C., Madoff, R. D., Rothenberger, D. A. & Garcia-Aguilar, j. (2002). Salvage radical surgery after failed local excision for early rectal cancer. Diseases of the Colon and Rectum, 45(7), 875-9. PMID: 12130873.

Garcia-Aguilar, J., Cromwell, J. W., Marra, C., Lee, S. H., Madoff, R. D. & Rothenberger, D. A. (2001). Treatment of locally recurrent rectal cancer. Diseases of the Colon and Rectum, 44(12), 1743-8. PMID: 11742153.

Yiu, R., Wong, S. K., Cromwell, J. W., Madoff, R. D., Rothenberger, D. A. & Garcia-Aguilar, J. (2001). Pelvic wall involvement denotes a poor prognosis in T4 rectal cancer. Disease of the Colon and Rectum, 44(11), 1676-81. PMID: 11711741.

Cromwell, J. W., Garcia-Aguilar, J. (1998). The molecular basis of cancer metastasis. Seminars in Colon & Rectal Surgery.

Granger, D. K., Cromwell, J. W., Canafax, D. M. & Matas, A. J. (1996). Combined rapamycin and cyclosporine immunosuppression in a porcine renal transplant model. Transplantation Proceedings, 28(2), 984. PMID: 8623488.

Granger, D. K., Cromwell, J. W., Chen, S. C., Goswitz, J. J., Morrow, D. T., Beierle, F. A., Sehgal, S. N., Canafax, D. M. & Matas, A. J. (1995). Prolongation of renal allograft survival in a large animal model by oral rapamycin monotherapy. Transplantation, 59(2), 183-6. PMID: 7839438.

Leventhal, J. R., Dalmasso, A. P., Cromwell, J. W., Platt, J. L., Manivel, C. J., Bolman 3rd, R. M. & Matas, A. J. (1993). Prolongation of cardiac xenograft survival by depletion of complement. Transplantation, 55(4), 857-65. PMID: 8475561.

Leventhal, J. R., Dalmasso, A. P., Cromwell, J. W., Manivel, C. J., Bolman 3rd, R. M. & Matas, A. J. (1993). Complement depletion prolongs discordant cardiac xenograft survival in rodents and non-human primates. Transplantation Proceedings, 25(1), 398-9. PMID: 8438352.

Flores, H. C., Cromwell, J. W., Leventhal, J. R., Najarian, J. S. & Matas, A. J. (1993). Does previous breast feeding affect maternal donor renal allograft outcome? A single-institution experience. Transplantation Proceedings, 25(1), 212. PMID: 8438274.