Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Chih-Chiun Jamie Chang, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1093392391

Dr. Chih-Chiun Jamie Chang, MD practises Ophthalmology in New York, New York. Graduated from University of California, San Francisco School of Medicine in 2021, 5 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment.

Years since qualifying
5
Trained at
University of California, San Francisco School of Medicine
In the registry since
2021
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

New York, NY

No coordinates on file. Search this address in Google Maps

Specialties & licences

Student in an Organized Health Care Education/Training Program (primary) Taxonomy 390200000X

Record details

NPI number1093392391
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 24, 2021
Last updated in NPPESSeptember 7, 2023
Certification dateSeptember 7, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2021 (5 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $289 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Permanente Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10941 clinicians in the practice; 12 are shown here.

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