MarkLaneWeltonMDMHCM

Colon & Rectal Surgery • Stanford, CA

Professor of Surgery, Chief Colon and Rectal Surgery, Vice Chief of Staff

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Office
300 Pasteur Dr # H3680j
Stanford, CA 94305
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Education & Training

Washington University/B-JH/SLCH ConsortiumResidency, Colon and Rectal Surgery, 1992 - 1993
UCLA David Geffen School of Medicine/UCLA Medical CenterResidency, Surgery, 1984 - 1991
David Geffen School of Medicine at UCLAClass of 1984

Certifications & Licensure

MN State Medical License 2018 - 2024
CA State Medical License 1986 - 2019
American Board of Colon and Rectal Surgery Colon & Rectal Surgery
American Board of Surgery Surgery

Awards, Honors, & Recognition

America's Top Doctors Castle Connolly, 2006-2014
America's Top Doctors for Cancer Castle Connolly, 2005-2013
CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2012-2013
Fellow (FACS) American College of Surgeons
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Clinical Trials

Molecular Genetic and Pathological Studies of Anal Tumors Start of enrollment: 2004 Sep 01
Terminated
Assessment of Health Related Quality of Life in Patients Treated for Rectal Cancer Start of enrollment: 2003 Dec 01
Terminated
QOL & Functional Outcomes After Combined Modality Tx for Anal CA: Comparison of Conventional vs IMRT Start of enrollment: 2005 Sep 01
Terminated
Early Removal of Urinary Catheters in Patients After Rectal Surgery: a Prospective Study Start of enrollment: 2010 Jun 01
Completed
Not Applicable
Effect of Celecoxib on Perioperative Inflammatory Response in Colon Cancer Start of enrollment: 2011 Jan 01
Terminated
Not Applicable
Study to Evaluate Efficacy and Safety of E-101 Solution for Preventing Surgical Site Infections After Colorectal Surgery Start of enrollment: 2013 Jan 10
Completed
Phase 3
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Publications & Presentations

PubMed

17 citations
Prevalence of Anal Dysplasia in Patients With Inflammatory Bowel Disease
Shamita B. Shah, Danielle M. Pickham, Hiwot Araya, Ahmad Kamal, Carlos E. Pineda, Saif Ghole, Lauren Shih, Christina S. Kong, Reet Pai, Mark L. Welton> ;Clinical Gastroenterology and Hepatology. 2015 Nov 1
1 citations
Rendezvous EndoSeel Technique for Non-operative Closure of Anastomotic Leak After Ileoanal Pouch Operation.
Nirav Thosani, Saurabh Sethi, David M. Hovsepian, Rajan Kochar, Mark L. Welton, Subhas Banerjee> ;Digestive Diseases and Sciences. 2015 Apr 14
Progression of anal high-grade squamous intraepithelial lesions to invasive anal cancer among HIV-infected men who have sex with men.
Berry, J. M.,Jay, N.,Cranston, R. D.,Darragh, T. M.,Holly, E. A.,Welton, M. L.,Palefsky, J. M.> ;Int. J. Cancer. 2013 Aug 12
Predictors of postoperative urinary retention after colorectal surgery.
Kin, C.,Rhoads, K. F.,Jalali, M.,Shelton, A. A.,Welton, M. L.> ;Dis. Colon Rectum. 2013 Jun
p16 is superior to ProEx C in identifying high-grade squamous intraepithelial lesions (HSIL) of the anal canal.
Bala, R.,Pinsky, B. A.,Beck, A. H.,Kong, C. S.,Welton, M. L.,Longacre, T. A.> ;Am. J. Surg. Pathol.. 2013 May
Orthovoltage intraoperative radiotherapy for locally advanced and recurrent colorectal cancer.
Daly, M. E., Kapp, D. S., Maxim, P. G., Welton, M. L., Tran, P. T., Koong, A. C., Chang, D. T.> ;Dis Colon Rectum. 2012 Jun
Intensity-modulated radiation therapy versus conventional radiation therapy for squamous cell carcinoma of the anal canal.
Bazan, J.G., Hara, W., Hsu, A., Kunz, P.A., Ford, J., Fisher, G.A., Welton, M.L., Shelton, A., Kapp, D.S., Koong, A.C., Goodman, K.A., Chang, D.T.> ;Cancer. 2011 Aug 1
Management of anal squamous intraepithelial lesions.
Pineda, C.E., Welton, M.L.> ;Clin Colon Rectal Surg. 2009 May
Mechanical bowel preparation in intestinal surgery: a meta-analysis and review of the literature.
Pineda, C.E., Shelton, A.A., Hernandez-Boussard, T., Morton, J.M., Welton, M.L.> ;J Gastrointest Surg. 2008 Nov
Diagnostic problems in anal pathology.
Longacre, T.A., Kong, C.S., Welton, M.L.> ;Adv Anat Pathol. 2008 Sep
High-resolution anoscopy targeted surgical destruction of anal high-grade squamous intraepithelial lesions: a ten-year experience.
Pineda, C.E., Berry, J.M., Jay, N., Palefsky, J.M., Welton, M.L.> ;Dis Colon Rectum. 2008 Jun
High resolution anoscopy in the planned staged treatment of anal squamous intraepithelial lesions in HIV-negative patients.
Pineda, C.E., Berry, J.M., Jay, N., Palefsky, J.M., Welton, M.L.> ;J Gastrointest Surg. 2007 Nov
Role of human papillomavirus in squamous cell metaplasia-dysplasia-carcinoma of the rectum.
Kong, C.S., Welton, M.L., Longacre, T.A.> ;Am J Surg Pathol. 2007 Jun
Transperineal repair of persistent rectovaginal fistulas using an acellular cadaveric dermal graft (AlloDerm).
Shelton, A.A., Welton, M.L.> ;Dis Colon Rectum. 2006 Sep
High resolution anoscopy and targeted treatment of high-grade squamous intraepithelial lesions.
Pineda, C.E., Berry, J.M., Welton, M.L.> ;Dis Colon Rectum. 2006 Jan
Anorectal sexually transmitted infections in men who have sex with men--special considerations for clinicians.
Goldstone, S.E., Welton, M.L.> ;Clin Colon Rectal Surg. 2004 Nov
Human papillomavirus, condylomata acuminata, and anal neoplasia.
Chang, G.J., Welton, M.L.> ;Clin Colon Rectal Surg. 2004 Nov
Anal cancer and its precursors in HIV-positive patients: perspectives and management.
Berry, J.M., Palefsky, J.M., Welton, M.L.> ;Surg Oncol Clin N Am. 2004 Apr
The etiology and epidemiology of anal cancer.
Welton, M.L., Sharkey, F.E., Kahlenberg, M.S.> ;Surg Oncol Clin N Am. 2004 Apr
Rectourethral fistulae: the perineal approach.
Visser, B.C., McAninch, J.W., Welton, M.L.> ;J Am Coll Surg. 2002 Jul
Expression and endocytosis of VEGF and its receptors in human colonic vascular endothelial cells.
Wang, D., Lehman, R.E., Donner, D.B., Matli, M.R., Warren, R.S., Welton, M.L.> ;Am J Physiol Gastrointest Liver Physiol. 2002 Jun
Surgical treatment of high-grade anal squamous intraepithelial lesions: a prospective study.
Chang, G.J., Berry, J.M., Jay, N., Palefsky, J.M., Welton, M.L.> ;Dis Colon Rectum. 2002 Apr
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Lectures

Evolution of Anal Premalignant and Carcinoma Classification
Stanford, CA - 10/27/2014
Anal Condyloma & AIN: Point/Counterpoint
Stanford, CA - 10/29/2014

Press Mentions

Blue Cross and Blue Shield of Minnesota and Fairview Health Services Announce “Strive” Product Portfolio for 2019October 4th, 2018
Four Faculty Members Appointed to Endowed PositionsApril 5th, 2018
Dr. Mark Welton - Life After Trauma: Lessons in Leadership and LifeFebruary 21st, 2017
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Grant Support

Regulation Of Colonic Endothelium By Bioactive PeptidesNational Institute Of Diabetes And Digestive And Kidney Diseases2001
Regulation Of Colonic Endothelium By Bioactive PeptidesNational Institute Of Diabetes And Digestive And Kidney Diseases1997–2000