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

Dr. Stanley Chang, MD

Individual provider Ophthalmology Physician · NPI 1639110307

Dr. Stanley Chang, MD practises Ophthalmology in New York, New York. Graduated from Columbia University College of Physicians and Surgeons in 1974, 52 years ago. Practices with Trustees of Columbia University in the City of New York, a 2,250-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
52
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

635 W 165th St Box 92
New York, NY 10032-3724 Not confirmed with CMS for 13 years — call before visiting
Phone: (212) 305-3015
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 124558 (NY)

Record details

NPI number1639110307
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2006
Last updated in NPPESAugust 20, 2013

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 1974 (52 years in practice)
Group practice Trustees Of Columbia University In The City Of New York — 2250 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Cataract surgery 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients511
Services billed 9,297 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Trustees of Columbia University in the City of New York

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2250 clinicians in the practice; 12 are shown here.

Other providers in New York