The physicians at North County Gastroenterology maintain the highest level of accreditation and pursue ongoing education to stay abreast of the latest advancements in gastroenterology. The descriptions below will introduce you to our physicians' education, training, and professional credentials. All our physicians are Board Certified in Gastroenterology by the American Board of Internal Medicine.
Doctor Biographies
Hellen Chiao, M.D.
College: UCLA, CA
Medical School: Medical College of Wisconsin, WI
Internship: Scripps Clinic, Scripps Green Hospital, La Jolla, CA - Internal Medicine
Residency: Scripps Clinic, Scripps Green Hospital, La Jolla, CA - Internal Medicine
Fellowship: Scripps Clinic, Scripps Green Hospital, La Jolla, CA - Gastroenterology
Board Certified: American Board of Internal Medicine - Internal Medicine & Gastroenterology
Joined North County Gastroenterology September 2018
Christopher E. Devereaux, M.D.
College: UCLA, CA
Medical School: University of Chicago, Prrtzker 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 August 1999
Thomas C. Krol, M.D., F.A.C.P.
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
Megan E. Novo, M.D.
College: University of Pennsylvania, PA
Medical School: George Washington University, DC
Internship: UCSD, CA - Internal Medicine
Residency: UCSD, CA - Internal Medicine
Fellowship: UCI, CA - Gastroenterology
Board Certified: American Board of Internal Medicine - Internal Medicine & Gastroenterology
Joined North County Gastroenterology August 2023
Javaid A. Shad, M.D., M.B.A.
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
Board Certified: American Board of Internal Medicine - Internal Medicine & Gastroenterology
Joined North County Gastroenterology December 2003
MBA: University of Tennessee, TN
Michael Shim, M.D.
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 June 2008
M. Eric Viernes, M.D.
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 July 2001
Other Providers
Physician Assistant - Eva J. Skulsky, P.A.-C., M.P.A.S.
College: State University of New York at Purchase
Medical: Pace University - Lenox Hill Hospital Physician Assistant Program, New York
Medical: University of Nebraska Medical Center, Masters of Physician Assistant Studies - Gastroenterology & Hepatology
Certification: National Commission on the Certification of Physician Assistants - Gastroenterology
Joined North County Gastroenterology February 2013
Nurse Practitioner - Sara I. Andolina, N.P.-C.
Associates Degree, Nursing - Orange County Community College
Bachelors of Science in Nursing - University of Phoenix
Masters in Nursing, Family Nurse Practitioner - University of Phoenix
Certification: American Academy of Nurse Practitioners
Joined North County Gastroenterology September 2014