Dr. Eileen L. Chang, M.D.
Ophthalmology (Glaucoma Specialist (Ophthalmology) Physician)
- Medicare participating
At a glance
- Medical school
- Drexel University College of Medicine (2016)
- Years since graduation
- 10
- In the NPI registry since
- 2016
- Medicare patients seen, 2024
- 348
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2016Medical school: Drexel University College of Medicine
- 2016Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Glaucoma Specialist (Ophthalmology) Physician primary
NY license 315803-01 -
Ophthalmology Physician
NY license 315803 -
Uveitis and Ocular Inflammatory Disease (Ophthalmology) Physician
NY license 315803-01
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- New York-Presbyterian Hospital New York, NY
- New York-Presbyterian/queens Flushing, NY
Medical groups
- Weill Medical College of Cornell (2,051 clinicians)
- New York Queens Medicine and Surgery, P.c. (401 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 348
- Services billed
- 1,206
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Established patient complete exam of visual system | 706 | 321 |
| Imaging of optic nerve | 313 | 247 |
| Exam of visual field with extended testing | 296 | 215 |
| Exam of the internal drainage system of eye | 218 | 213 |
| Ultrasound scan of cornea to determine thickness | 92 | 92 |
| New patient complete exam of visual system | 88 | 88 |
| Photography of the retina | 50 | 49 |
| Measurement of corneal curvature and depth of eye | 36 | 32 |
| Laser repair to improve eye fluid flow | 35 | 28 |
| Imaging of retina | 32 | 17 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Latanoprost Other prescribers in New York, NY | 273 |
| Dorzolamide-Timolol (dorzolamide hcl/timolol maleat) Other prescribers in New York, NY | 221 |
| Brimonidine Tartrate Other prescribers in New York, NY | 167 |
| Timolol Maleate Other prescribers in New York, NY | 129 |
| Rhopressa (netarsudil mesylate) | 81 |
| Prednisolone Acetate Other prescribers in New York, NY | 79 |
| Rocklatan (netarsudil mesylat/latanoprost) Other prescribers in New York, NY | 71 |
| Simbrinza (brinzolamide/brimonidine tart) Other prescribers in New York, NY | 67 |
| Dorzolamide Hcl Other prescribers in New York, NY | 53 |
| Brinzolamide | 39 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 7 companies reported 16 payments worth $565 in total to this clinician.
| Mallinckrodt Hospital Products Inc. | $211 |
|---|---|
| Ani Pharmaceuticals, Inc. | $150 |
| Sun Pharmaceutical Industries Inc. | $83.20 |
| Oyster Point Pharma, Inc. | $45.86 |
| Bausch & Lomb Americas Inc. | $43.56 |
| Tarsus Pharmaceuticals, Inc. | $16.47 |
| AbbVie Inc. | $15.38 |
| Food and Beverage | $465 |
|---|---|
| Education | $99.99 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Mallinckrodt Hospital Products Inc. Jun 16, 2025 | Education ACTHAR · IMMUNOLOGY · in-kind Company’s descriptionRelevant medical textbook or clinical reprint | $99.99 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.