Dr. Amy Chang, MD

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

Dr. Chang's NPI, 1962848960, was assigned on May 16, 2013. Dr. Chang graduated from Cleveland Medical College, Homeopathic in 2013. Dr. Chang's California license number on file is A142120.

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.

Infectious disease is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Chang is board certified in infectious disease by the American Board of Internal Medicine. Dmand AI has Dr. Chang's licenses on file in 2 states: California and Michigan.

Dmand AI lists acute sinusitis, acute skin infection and joint or bone infection among the conditions Dr. Chang treats.

CMS data shows 478 Medicare services from Dr. Chang across 7 procedure codes in 2024, for 147 Medicare patients. Medicare paid $46,132 for them.

CMS counts 147 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 60 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 40% are also on Medicaid. Their average risk score is 2.61, 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 60, with 43% women.

In 2024, Dr. Chang wrote 111 Medicare Part D claims for 32 patients. 97% of them were for generic drugs. CMS names the drug for 46 of them, across 2 drugs with 11 or more claims each, at $2,215 in total drug cost. In 2023, CMS named 57 claims across 3 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 26 papers to Dr. Chang, published from 2011 to 2025. 2022 was the busiest year, with 5. The most frequent topics are Models, Biological, Adenosine Triphosphate and Anti-Bacterial Agents. Dr. Chang has published most often in Open Forum Infect Dis. Dr. Chang's most frequent co-authors are Jonathan H. Chen, MD, PhD, Marisa Kathleen Holubar, MD and Niaz Banaei.

CMS Open Payments shows 1 general payment to Dr. Chang from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Insulet Corporation paid the most, $44.

Dr. Chang graduated from Cleveland Medical College, Homeopathic in 2013. Dr. Chang is a member of SHM.

Dr. Chang is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.