Careers With St. Joseph Health

Our Values are more than just words.

They form the heart and soul of St. Joseph Health and are the prime reason we attract and retain high-caliber employees who believe in the sanctity of their work in our faith-based setting.

Recent News

Irvine school nurses, staff learn Stop the Bleed techniques to respond in mass-casualty situation

Irvine school nurses and athletic trainers on Tuesday, Jan. 30, learned simple techniques that could save lives in a shooting or other ...

Read More

Families anticipate exciting community blessing of surgical center

A community is as strong as its hospital, and with recent investments into Covenant Health Plainview, it’s evident that to our friends ...

Read More

Severe Flu Season Tightens Its Grip on U.S.

Americans are being hit with one of the worst flu seasons in years, with misery now widespread across 46 states, health officials say. In ...

Read More

Here you can find news articles and press releases from St. Joseph Health and it's locations.

About St. Joseph Health

SJH provides a full range of care facilities including 16 acute care hospitals, home health agencies, hospice care, outpatient services, skilled nursing facilities, community clinics and physician groups. All of our hospital and home health entities are accredited by the Joint Commission. In our award-winning facilities, SJH maintains a "continuum of care," matched to the diverse needs of the urban centers, smaller cities and rural communities who depend on us every day.

Giving back to the community. St. Joseph Health System Office

Elmer Y. Chang, MD

4.9 out of 5 (78 Ratings)
Specialty
  • Gastroenterology
    (Board Certified)
Additional Language Spoken
Mandarin Chinese, Taiwanese
Address
27871 Medical Center Dr.
Suite 200
Mission Viejo, CA 92691
Accepting New Patients

Primary Office

Address
27871 Medical Center Dr.
Suite 200
Mission Viejo, CA 92691
Get Directions
Phone
(949) 364-5090
Fax
(949) 364-5427

Secondary Office

Address
St. Joseph Health Medical Group
1476 Professional Dr.
Suite 504

More Information

Medical Groups & Affiliations
  • Mission Heritage Medical Group
  • Mission Hospital Affiliated Physicians
  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Gastroenterology
      (Board Certified)
    Education & Training
    • Medical School
      Northwestern University School of Medicine
    • Internship
      Baylor College of Medicine- Houston, TX
    • Residency
      Baylor College of Medicine- Houston, TX
    • Fellowship
      UCSF Medical Center at Parnassus - 2008
    • Fellowship
      UCLA Medical Center - 2007
  • Biography

    Biography

    Biography

    Dr. Chang is a Board Certified Gastroenterologist who specializes in the evaluation and management of disorders of the gastrointestinal tract, pancreas, bile duct, and liver.

    He performs upper endoscopy and colonoscopy to screen for, diagnose, and treat a variety of gastrointestinal diseases and cancers.

    He also has expertise in several advanced endoscopic techniques including endoscopic retrograde cholangiopancreatography (ERCP), a procedure that is used to manage stones, strictures, and malignant obstruction of the bile duct. He is fluent in English, Mandarin, and Taiwanese.

    Dr. Chang graduated with degrees in molecular biology and economics from the Northwestern University, and received his medical degree from the Northwestern University Medical School. After finishing residency training in Internal Medicine from the Baylor College of Medicine, he completed a fellowship in gastroenterology and hepatology at the UCLA School of Medicine.

    During his fellowship, Dr. Chang was recruited into the Specialty Training and Advanced Research program at UCLA, where he conducted research in gut immunity and inflammatory bowel disease. In recognition of this research, he was granted a philosophical doctorate degree from the Department of Microbiology, Immunology, and Molecular Genetics at UCLA.

    He also received several awards for this work, including grants from the National Institute of Health and the Crohn's and Colitis Foundation of America.

    Following his fellowship training at UCLA, Dr. Chang pursued another year of advanced endoscopic fellowship at the UCSF School of Medicine, where he developed expertise in therapeutic ERCP, endoscopic ultrasound, gastrointestinal stricture remediation, and other advanced endoscopic procedures.

    Dr. Chang has published numerous abstracts and articles in the field of gut immunity, inflammatory bowel disease, and pancreaticobiliary disorders in peer-reviewed journals such as Gastroenterology, Journal of Clinical Investigation, and Journal of Immunology.

    He is a member of the American Gastroenterology Association, American Society of Gastrointestinal Endoscopy, American College of Gastroenterology, and American Medical Association.

    Certifications
    American Gastroenterology Association
    American Society of Gastrointestinal Endoscopy
    American College of Gastroenterology
    American Medical Association
    Areas of Expertise
    Colon cancer screening
    Heartburn or acid reflux
    Peptic ulcer disease
    Inflammatory bowel disease
  • 12-Apr-2018
    excellent dr
    22-Mar-2018
    Have already recommended *Dr. Chang to a family member who is very happy in his care.
    11-Mar-2018
    I've heard very good things about *Dr. Chang. My visit was good, it confirmed these feelings.
    26-Feb-2018
    good
    6-Dec-2017
    Excellent dr. he really took time & listened to me. He really seemed to care! I would highly recommend this dr. to friends & family.
    10 Total Comments Page 1 2   Next