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Fernando Velayos, M.D.



Gastroenterology at Mount Zion
1701 Divisadero St., Suite 120
San Francisco, CA 94115
Phone: (415) 502-4444
Fax: (415) 502-2249

Hours: Monday to Friday
9 a.m. – 4:30 p.m.

Inflammatory Bowel Disease Center
1701 Divisadero St., Suite 120
San Francisco, CA 94115
Phone: (415) 502-4444
Fax: (415) 502-2249

More about Fernando Velayos


UCSF School of Medicine 1997


UCSF Medical Center, Internal Medicine 2001


UCSF Medical Center 2004

Selected Research and Publications

  1. Day LW, Velayos F. Colorectal cancer and the elderly. Clin Geriatr Med. 2014 Feb; 30(1):117-31.
  2. Velayos FS, Ullman TA. Looking forward to understanding and reducing colorectal cancer risk in inflammatory bowel disease. Gastroenterology. 2013 Jul; 145(1):47-9.
  3. Sewell JL, Velayos FS. Systematic review: The role of race and socioeconomic factors on IBD healthcare delivery and effectiveness. Inflamm Bowel Dis. 2013 Mar; 19(3):627-43.
  4. Velayos FS, Kahn JG, Sandborn WJ, Feagan BG. A test-based strategy is more cost effective than empiric dose escalation for patients with Crohn's disease who lose responsiveness to infliximab. Clin Gastroenterol Hepatol. 2013 Jun; 11(6):654-66.
  5. Akbari M, Shah S, Velayos FS, Mahadevan U, Cheifetz AS. Systematic review and meta-analysis on the effects of thiopurines on birth outcomes from female and male patients with inflammatory bowel disease. Inflamm Bowel Dis. 2013 Jan; 19(1):15-22.
  6. Herrinton LJ, Liu L, Levin TR, Allison JE, Lewis JD, Velayos F. Incidence and mortality of colorectal adenocarcinoma in persons with inflammatory bowel disease from 1998 to 2010. Gastroenterology. 2012 Aug; 143(2):382-9.
  7. Sai VF, Velayos F, Neuhaus J, Westphalen AC. Colonoscopy after CT diagnosis of diverticulitis to exclude colon cancer: a systematic literature review. Radiology. 2012 May; 263(2):383-90.
  8. Velayos F. Managing risks of neoplasia in inflammatory bowel disease. Curr Gastroenterol Rep. 2012 Apr; 14(2):174-80.
  9. Cheifetz AS, Melmed GY, Spiegel B, Talley J, Devlin SM, Raffals L, Irving PM, Jones J, Kaplan GG, Kozuch P, Sparrow M, Velayos F, Baidoo L, Bressler B, Siegel CA. Setting priorities for comparative effectiveness research in inflammatory bowel disease: results of an international provider survey, expert RAND panel, and patient focus groups. Inflamm Bowel Dis. 2012 Dec; 18(12):2294-300.
  10. Lin KK, Velayos F, Fisher E, Terdiman JP. Durability of infliximab dose intensification in Crohn's disease. Dig Dis Sci. 2012 Apr; 57(4):1013-9.
  11. Day LW, Walter LC, Velayos F. Colorectal cancer screening and surveillance in the elderly patient. Am J Gastroenterol. 2011 Jul; 106(7):1197-206;quiz 1207.
  12. Siao D, Velayos FS. The good, the bad, and the ugly: adverse events and Crohn's therapies. Inflamm Bowel Dis. 2010 Aug; 16(8):1443-4.
  13. Velayos FS, Liu L, Lewis JD, Allison JE, Flowers N, Hutfless S, Abramson O, Perry GS, Herrinton LJ. Prevalence of colorectal cancer surveillance for ulcerative colitis in an integrated health care delivery system. Gastroenterology. 2010 Nov; 139(5):1511-8.
  14. Siao D, Velayos FS. Surgery for low-grade colorectal dysplasia in ulcerative colitis: decisions, decisions. Inflamm Bowel Dis. 2010 Jul; 16(7):1265-6.
  15. Hou JK, Velayos F, Terrault N, Mahadevan U. Viral hepatitis and inflammatory bowel disease. Inflamm Bowel Dis. 2010 Jun; 16(6):925-32.
  16. Melmed GY, Spiegel BM, Bressler B, Cheifetz AS, Devlin SM, Harrell LE, Irving PM, Jones J, Kaplan GG, Kozuch PL, Velayos FS, Baidoo L, Sparrow MP, Siegel CA. The appropriateness of concomitant immunomodulators with anti-tumor necrosis factor agents for Crohn's disease: one size does not fit all. Clin Gastroenterol Hepatol. 2010 Aug; 8(8):655-9.
  17. Abramson O, Durant M, Mow W, Finley A, Kodali P, Wong A, Tavares V, McCroskey E, Liu L, Lewis JD, Allison JE, Flowers N, Hutfless S, Velayos FS, Perry GS, Cannon R, Herrinton LJ. Incidence, prevalence, and time trends of pediatric inflammatory bowel disease in Northern California, 1996 to 2006. J Pediatr. 2010 Aug; 157(2):233-239.e1.
  18. Velayos FS, Sandborn WJ. Use of azathioprine and 6MP in postoperative Crohn's: changing natural history or just along for the ride? Am J Gastroenterol. 2009 Aug; 104(8):2097-9.
  19. Lewis JD, Abramson O, Pascua M, Liu L, Asakura LM, Velayos FS, Hutfless SM, Alison JE, Herrinton LJ. Timing of myelosuppression during thiopurine therapy for inflammatory bowel disease: implications for monitoring recommendations. Clin Gastroenterol Hepatol. 2009 Nov; 7(11):1195-201; quiz 1141-2.
  20. Rubenstein JH, Waljee AK, Jeter JM, Velayos FS, Ladabaum U, Higgins PD. Cost effectiveness of ulcerative colitis surveillance in the setting of 5-aminosalicylates. Am J Gastroenterol. 2009 Sep; 104(9):2222-32.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.