Dr. Ding M. Ma, MD
Ophthalmology (Ophthalmology Physician)
- Medicare participating
At a glance
- Years since graduation
- 14
- In the NPI registry since
- 2012
- Medicare patients seen, 2024
- 672
Licensed in Connecticut since 2018, according to the Connecticut Department of Public Health. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
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
- 2012Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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
-
Ophthalmology Physician primary
CT license 60376 (first issued 2018; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Vassar Brothers Medical Center Poughkeepsie, NY
Medical groups
- Hudson Valley Eye Surgeons (8 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
- 672
- Services billed
- 1,502
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Established patient problem focused exam of visual system | 376 | 262 |
| Established patient complete exam of visual system | 201 | 195 |
| New patient complete exam of visual system | 152 | 152 |
| Imaging of retina | 89 | 85 |
| Measurement of corneal curvature and depth of eye | 33 | 24 |
| Imaging of optic nerve | 30 | 27 |
| Extended exam of the back part of the eye with retinal drawing | 29 | 29 |
| Removal of cataract with insertion of prosthetic lens | 25 | 15 |
| New patient problem focused exam of visual system | 25 | 25 |
| Exam of visual field with extended testing | 21 | 19 |
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 Norwalk, CT | 117 |
| Neomycin-Polymyxin-Dexameth (neomycin/polymyxin b/dexametha) Other prescribers in Norwalk, CT | 107 |
| Prednisolone Acetate Other prescribers in Norwalk, CT | 69 |
| Moxifloxacin (moxifloxacin hcl) Other prescribers in Norwalk, CT | 52 |
| Dorzolamide-Timolol (dorzolamide hcl/timolol maleat) Other prescribers in Norwalk, CT | 30 |
| Lumigan (bimatoprost) Other prescribers in Norwalk, CT | 27 |
| Doxycycline Monohydrate Other prescribers in Norwalk, CT | 25 |
| Timolol Maleate Other prescribers in Norwalk, CT | 24 |
| Amoxicillin-Clavulanate Potass (amoxicillin/potassium clav) Other prescribers in Norwalk, CT | 21 |
| Cyclosporine Other prescribers in Norwalk, CT | 19 |
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, 10 companies reported 17 payments worth $471 in total to this clinician.
| Mallinckrodt Hospital Products Inc. | $111 |
|---|---|
| Tarsus Pharmaceuticals, Inc. | $105 |
| Amgen Inc. | $71.86 |
| Bausch & Lomb Americas Inc. | $46.64 |
| Rayner Intraocular Lenses Limited | $26.18 |
| Sun Pharmaceutical Industries Inc. | $25.37 |
| GlaxoSmithKline, LLC. | $23.94 |
| Dompe US, Inc. | $22.89 |
| Food and Beverage | $471 |
|---|
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.