Dr. Chang is on Doximity
As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.
- Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
- Connect with colleagues in the same hospital or clinic.
- Read the latest clinical news, personalized to your specialty.
Office
9500 Gilman Dr # 0063
La Jolla, CA 92093Phone+1 619-543-2347
Education & Training
- University of Pennsylvania Health SystemFellowship, Gastroenterology, 2004 - 2007
- University of Pennsylvania Health SystemResidency, Internal Medicine, 2001 - 2004
- Lewis Katz School of Medicine at Temple UniversityClass of 2001
Certifications & Licensure
- CA State Medical License 2009 - 2025
- PA State Medical License 2001 - 2010
- American Board of Internal Medicine Gastroenterology
Publications & Presentations
PubMed
- 9 citationsIBD Matchmaking: Rational Combination Therapy.Robert Battat, John T Chang, Edward V Loftus Jr, Bruce E Sands
Clinical Gastroenterology and Hepatology. 2025-02-01 - Differential Efficacy of Advanced Therapies in Inducing Remission in Ulcerative Colitis Based on Prior Exposure to TNF Antagonists.Han Hee Lee, Virginia Solitano, Sujay Singh, Ashwin N Ananthakrishnan, Vipul Jairath
Clinical Gastroenterology and Hepatology. 2024-12-26 - Correction to: Genetic Risk, Dysbiosis, and Treatment Stratification Using Host Genome and Gut Microbiome in Inflammatory Bowel Disease.Ahmed Moustafa, Weizhong Li, Ericka L Anderson, Emily H MWong, Parambir S Dulai
Clinical and Translational Gastroenterology. 2024-12-01
Viewing the full profile is available to verified healthcare professionals only.
Find your profile and take control of your online presence: