Elmer Y. Chang, MD

Accepting New Patients
Offers Video Visits
27799 Medical Center Road, Suite 320
Mission Viejo, CA 92691
2253.2 miles away
Medical Groups & Affiliations
This provider is part of the larger Providence network and you may be able to access providers, hospitals, and services with the following groups:
  • Mission Heritage Medical Group and Affiliated Physicians
  • St. Joseph Heritage Medical Group and Affiliated Physicians
  • St. Jude Heritage Medical Group and Affiliated Physicians
Speaks: Hokkien, Chinese - Mandarin and English
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Providence Center for Digestive Health - Mission Viejo

27799 Medical Center Road, Suite 320, Mission Viejo, CA 92691

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About Elmer Y. Chang

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.

Medical School

Northwestern University School of Medicine

Internship

Baylor College of Medicine

Residency

Baylor College of Medicine

Fellowship

UCSF Medical Center at Parnassus
2008

Fellowship

UCLA Medical Center
2007

Board Certifications
  • American Board of Internal Medicine, Gastroenterology
Providence Center for Digestive Health - Mission Viejo
27799 Medical Center Road, Suite 320
Mission Viejo, CA 92691

Medical Groups & Affiliations
Mission Heritage Medical Group

Affiliated Locations
Providence Mission Hospital - Laguna Beach
Providence Mission Hospital - Mission Viejo

Clinical Interests

  • Abdominal Pain
  • Abnormal Bowel Movement
  • Abnormal Liver Function Blood Test
  • Abnormal Stool
  • Achalasia
  • Acute Pancreatitis
  • Alcoholic Hepatitis
  • Altered Bowel Habits
  • Anemia
  • Anorexia
  • Autoimmune Enteropathy
  • Autoimmune Hepatitis
  • Barrett's Esophagus
  • Benign Neoplasm Of Colon
  • Biliary Tract Disease
  • Blood In Stool
  • Bravo Ph Test
  • Breath Testing
  • Bright Red Blood Per Rectum
  • Burping
  • Capsule Endoscopy
  • Celiac Disease
  • Cholangioscopy
  • Cholangitis
  • Cholecystitis
  • Cholelithiasis
  • Cholestasis
  • Chronic Abdominal Pain
  • Chronic Diarrhea
  • Chronic Pancreatitis
  • Cirrhosis
  • Clostridium Difficile
  • Clostridium Infections
  • Cold Therapies
  • Colitis
  • Colon Polypectomy
  • Colonic Inertia
  • Colonic Polyps
  • Colonoscopy
  • Colorectal Screening
  • Constipation
  • Crigler Najjar Syndrome
  • Cyclic Vomiting Syndrome
  • Digestive Disorders
  • Diverticular Disease
  • Diverticulitis
  • Diverticulosis
  • Double Balloon Enteroscopy
  • Duodenal Ulcer
  • Duodenitis
  • Dyspepsia
  • Dysphagia
  • End Stage Liver Disease
  • Endoscopic Mucosal Resection
  • Endoscopic Mucosal Resection Of Esophagus
  • Endoscopic Mucosal Resection Of Large Colon Polyps
  • Endoscopic Retrograde Cholangiopancreatography
  • Endoscopic Ultrasound
  • Endoscopy
  • Eosinophilic Colitis
  • Eosinophilic Enteritis
  • Eosinophilic Esophagitis
  • Eosinophilic Gastritis
  • Epigastric Pain
  • Eructation
  • Esophageal Disease
  • Esophageal Disorder
  • Esophageal Diverticulum
  • Esophageal Mass
  • Esophageal Motility Disorders
  • Esophageal Spasm
  • Esophageal Stricture
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Fatty Liver
  • Fecal Impaction
  • Fecal Incontinence
  • Feeding Tube Management
  • Flatulence
  • Focal Nodular Hyperplasia
  • Gallbladder Disease
  • Gallbladder Polyp
  • Gastric Anomaly
  • Gastric Ulcer
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux Disease
  • Gastroesophageal Reflux Surgery
  • Gastrointestinal (Gi) Cancer Screening
  • Gastrointestinal Amyloid
  • Gastrointestinal Bleeding
  • Gastroparesis
  • Gastroscopy
  • Gastrostomy Closure Surgery
  • Giardiasis
  • Gluten Sensitivity
  • Helicobacter Pylori
  • Hematemesis
  • Hematochezia
  • Hemochromatosis
  • Hepatitis
  • Hepatitis B
  • Hepatitis C
  • Hereditary Colon Cancer
  • Hiatal Hernia
  • High Resolution Manometry
  • Ileitis
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Intractable Vomiting
  • Irritable Bowel Syndrome
  • Jaundice
  • Lactose Intolerance
  • Liver Disease
  • Liver Mass
  • Lynch Syndrome
  • Malabsorption
  • Melena
  • Motility Disorders
  • Nausea
  • Non Alcoholic Fatty Liver Disease
  • Non Alcoholic Steatohepatitis
  • Obstipation
  • Odynophagia
  • Ogilvie Syndrome
  • Pancreas Divisum
  • Pancreatic Cyst
  • Pancreatic Fistula
  • Pancreatic Insufficiency
  • Pancreatic Pseudocyst
  • Pancreatic Steatorrhoea
  • Pancreaticobiliary Disease
  • Pancreatitis
  • Paralytic Ileus
  • Partial Small Bowel Obstruction (Sbo)
  • Peptic Ulcer
  • Peritonitis
  • Peutz Jeghers Syndrome
  • Polyposis Syndrome
  • Portal Hypertension
  • Portal Hypertensive Gastropathy
  • Postprandial Diarrhea
  • Primary Encopresis
  • Proctitis
  • Proctosigmoidoscopy
  • Radiofrequency Ablation For Barrett's Esophagus
  • Rectal Bleeding
  • Rectal Pain
  • Regional Enteritis
  • Secondary Encopresis
  • Short Bowel Syndrome
  • Sigmoidoscopy
  • Small Bowel Disease
  • Stomach Cramps
  • Stomach Disorders
  • Swallowing Problem
  • Ulcerative Colitis
  • Virtual Care
  • Vomiting
  • Whipple's Disease
  • Wilson's Disease