Dr. Michael Abel Chang, MD

Dr. Chang practices at UCSD Hillcrest Medical Center in San Diego, California.

Dr. Chang's NPI, 1114155488, was assigned on June 25, 2009. Dr. Chang graduated from Drexel University College Of Medicine in 2009. Dr. Chang holds California license A114639.

Dr. Chang's primary practice is UCSD Hillcrest Medical Center, at 200 W Arbor Dr, San Diego, CA 92103 in San Diego County. The practice phone is (619) 543-6222.

Dr. Chang's primary practice is UCSD Hillcrest Medical Center in San Diego, California. Dr. Chang is also affiliated with Hillcrest Medical Center. The medical group on file is UC San Diego Health. Dmand AI also links Dr. Chang to 1 more medical group, named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.

Gastroenterology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Chang is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Chang is licensed in California.

Dmand AI lists acid reflux, colonoscopy, esophagus, stomach, or upper small intestine surgery, gastroenteritis, gastrointestinal bleeding, intestinal or bowel obstruction, irritable bowel syndrome (IBS) and pancreas or bile duct endoscopy (ERCP) among the conditions Dr. Chang treats.

CMS data shows 768 Medicare services from Dr. Chang across 17 procedure codes in 2024, for 395 Medicare patients. Medicare paid $85,894 for them.

CMS counts 395 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 187 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 30% are also on Medicaid. Their average risk score is 1.95, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 59, with 56% women.

In 2024, Dr. Chang wrote 641 Medicare Part D claims for 301 patients. 76% of them were for generic drugs. CMS names the drug for 506 of them, across 15 drugs with 11 or more claims each, at $88,994 in total drug cost. In 2023, CMS named 453 claims across 14 drugs.

Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth. CMS counts 422 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Chang, more than 98% of the clinicians it reports for that procedure.

Dmand AI links 16 papers to Dr. Chang, published from 2017 to 2023. 2017 was the busiest year, with 4. The most frequent topics are Esophageal Achalasia, Manometry and Esophagogastric Junction. Dr. Chang has published most often in VideoGIE. Dr. Chang's most frequent co-authors are Gobind S. Anand, Thomas John Savides, MD and Syed M.a. Fehmi, MD, MS.

Dmand AI links Dr. Chang to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Ventricular Outflow Obstruction and Aortic Valve Stenosis.

CMS Open Payments shows 51 general payments to Dr. Chang from 15 drug and device companies from 2016 to 2025. Grants make up the largest share, 77% of the total. Boston Scientific Corporation paid the most, $10,239.

Dr. Chang graduated from Drexel University College Of Medicine in 2009.

Dr. Chang is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.