Dr. Michael Tzen-Jeh Chang, MD

Dr. Chang practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.

Dr. Chang's NPI, 1720432016, was assigned on April 22, 2016. Dr. Chang graduated from Yale School of Medicine in 2016. Dr. Chang holds California license A152394.

Dr. Chang's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.

Dr. Chang's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Chang to 1 more hospital and 1 medical group, each named with a free account. Dr. Chang's employer is on file too: a hospital.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 2 sites in all. Vendor and product names are available with a free account.

Otolaryngology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Chang is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery. Dr. Chang is licensed in California.

CMS data shows 420 Medicare services from Dr. Chang across 10 procedure codes in 2024, for 166 Medicare patients. Medicare paid $67,660 for them.

CMS counts 166 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 93 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 17% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 48, with 50% women.

In 2024, Dr. Chang wrote 109 Medicare Part D claims for 56 patients. 93% of them were for generic drugs. CMS names the drug for 49 of them, across 2 drugs with 11 or more claims each, at $1,547 in total drug cost. In 2023, CMS named 103 claims across 4 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Chang for performance year 2024, reported as part of a group. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth.

Dmand AI links 37 papers to Dr. Chang, published from 2015 to 2025. 2023 was the busiest year, with 6. The most frequent topics are Rhinitis, Endoscopy and Sinusitis. Dr. Chang has published most often in Int Forum Allergy Rhinol. Dr. Chang's most frequent co-authors are Jayakar V. Nayak, MD, Zara Marzban Patel, MD and Peter H. Hwang, MD.

CMS Open Payments shows 23 general payments to Dr. Chang from 9 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 99% of the total. Stryker Corporation paid the most, $421.

Dr. Chang graduated from Yale School of Medicine in 2016. Dr. Chang is a member of NHS.

Dr. Chang is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.