Dr. Nancy Mai Lin Chang, MD

Dr. Chang practices at Columbia University Irving Medical Center in New York, New York.

Dr. Chang's NPI, 1033205190, was assigned on October 5, 2006. Dr. Chang graduated from Columbia University Vagelos College of Physicians and Surgeons in 1995. Dr. Chang holds New York license 204622.

Dr. Chang's primary practice is Columbia University Irving Medical Center, at 622 W 168th St, New York, NY 10032 in New York County. The practice phone is (212) 297-4255.

Dr. Chang's primary practice is Columbia University Irving Medical Center in New York, New York. Dr. Chang is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center. The medical group on file is ColumbiaDoctors. Dmand AI also links Dr. Chang to 2 more home health agencies and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 3 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in New York.

Dmand AI lists adjustment disease, alcohol use disorders, alzheimer's disease, anxiety, asthma, atrial fibrillation and flutter, cerebrovascular disease and chronic diabetes among the conditions Dr. Chang treats.

CMS data shows 192 Medicare services from Dr. Chang across 4 procedure codes in 2024, for 95 Medicare patients. Medicare paid $12,646 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 95 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 33 patients. 75% of them have high blood pressure, and 56% have high cholesterol. 81% are also on Medicaid. Their average risk score is 2.26, 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 71, with 62% women.

In 2024, Dr. Chang wrote 3,067 Medicare Part D claims for 200 patients. 81% of them were for generic drugs. CMS names the drug for 2,765 of them, across 49 drugs with 11 or more claims each, at $419,302 in total drug cost. In 2023, CMS named 3,158 claims across 48 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Chang for performance year 2024, reported through an alternative payment model (APM). 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 3 papers to Dr. Chang, published from 2010 to 2025. Dr. Chang's most frequent co-authors are Nancy Ann Chang, DO, Audrey Compton, MD and Maria H. De Miguel, MD.

CMS Open Payments shows 1 general payment to Dr. Chang from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Celgene Corporation paid the most, $24.

Dr. Chang graduated from Columbia University Vagelos College of Physicians and Surgeons in 1995.

Dr. Chang is in network with 13 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.