Center for Endoscopy

Our Physicians

Christopher E. Devereaux, MD

Christopher E. Devereaux | MD

  • College: UCLA, CA
  • Medical School: University of Chicago, Pritzker School of Medicine, IL
  • Internship: Naval Medical Center, San Diego, CA – Internal Medicine
  • Residency: Naval Medical Center, San Diego, CA – Internal Medicine
  • Fellowship: Naval Medical Center, San Diego, CA – Gastroenterology
  • Board Certified: American Board of Internal Medicine – Internal Medicine & Gastroenterology
  • Joined North County Gastroenterology & the Center for Endoscopy August 1999
  • Dr. Devereaux lives in San Diego with his wife and two children. He enjoys listening to all types of music and researching his family’s history.
Thomas C. Krol, MD, FACP

Thomas C. Krol | MD, FACP

  • College: Loyola University of Chicago, IL
  • Medical School: Loyola University. Stritch School of Medicine, IL
  • Internship: Loyola University, Stritch School of Medicine, IL – Internal Medicine
  • Residency: Loyola University, Foster McGaw Hospital, IL – Internal Medicine
  • Fellowship: UCSD, CA – Gastroenterology
  • Board Certified: American Board of Internal Medicine – Internal Medicine & Gastroenterology
  • Joined North County Gastroenterology May 1983
  • One of the founding physicians who opened the Center for Endoscopy in 1991
  • Dr. Krol lives in Carlsbad with his wife and three children. He enjoys exercising, skiing, and has obtained a third degree black belt in Shaolin Kempo.
Javaid A. Shad, MD, MBA

Javaid A. Shad | MD, MBA

  • College: University of Texas, Austin, TX
  • Medical School: University of Texas, TX
  • Internship: Naval Medical Center, San Diego, CA – Internal Medicine
  • Residency: Naval Medical Center, San Diego, CA – Internal Medicine
  • Fellowship: Naval Medical Center, San Diego, CA – Gastroenterology
  • MBA: University of Tennessee, TN
  • Board Certified: American Board of Internal Medicine – Internal Medicine & Gastroenterology
  • Joined North County Gastroenterology & the Center for Endoscopy December 2003
  • Dr. Shad lives in Carlsbad with his wife and two daughters.
Michael Shim, MD

Michael Shim | MD

  • College: Brown University, RI
  • Medical School: New York University School of Medicine, NY
  • Internship: New York University School of Medicine, NY – Internal Medicine
  • Residency: New York University School of Medicine, NY – Internal Medicine
  • Fellowship: UCLA Division of Digestive Diseases, CA – Gastroenterology
  • Board Certified: American Board of Internal Medicine – Gastroenterology
  • Joined North County Gastroenterology & the Center for Endoscopy June 2008
  • Dr. Shim lives in Carlsbad with his wife and two daughters, and enjoys the perfect weather of coastal San Diego County.

M. Eric Viernes, MD

Eric Viernes | MD

  • College: University of California, Berkeley, CA
  • Medical School: University of Wisconsin, WI
  • Internship: UCLA Medical Center, CA – Internal Medicine
  • Residency: UCLA Medical Center, CA – Internal Medicine
  • Fellowship: Scripps Clinic, Green Hospital. CA – Gastroenterology
  • Board Certified: American Board of Internal Medicine – Internal Medicine & Gastroenterology
  • Joined North County Gastroenterology & the Center for Endoscopy July 2001
  • Dr. Viernes lives in Carlsbad with his family. He is an avid runner, and has competed in many marathons, including the New York Marathon.

Helen Chiao | MD

  • Medical School: Medical College of Wisconsin
  • Internship: Scripps Clinic/ Scripps Green Hospital – Internal Medicine
  • Residency: Scripps Clinic/ Scripps Green Hospital – Internal Medicine
  • Fellowship: Scripps Clinic, Green Hospital – Gastroenterology
  • Board Certified: American Board of Internal Medicine – Internal Medicine & Gastroenterology