Dr. Gareth M. Lema, MD, PHD
Retina Specialist (Retina Specialist (Ophthalmology) Physician)
- Medicare participating
At a glance
- Medical school
- State University of New York at Buffalo School of Medicine (2007)
- Years since graduation
- 19
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 120
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. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2007Medical school: State University of New York at Buffalo School of Medicine
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
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
-
Retina Specialist (Ophthalmology) Physician primary
NY license 260449 -
Ophthalmology Physician
NY license 260449
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Mount Sinai Hospital New York, NY
- Ny Eye and Ear Infirmary of Mount Sinai New York, NY
Medical groups
- Icahn School of Medicine at Mount Sinai (2,843 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
- 120
- Services billed
- 496
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| Imaging of retina | 218 | 105 |
| Established patient office or other outpatient visit, 30-39 minutes | 100 | 69 |
| Injection of drug into eye | 89 | 28 |
| Established patient problem focused exam of visual system | 30 | 26 |
| Established patient office or other outpatient visit, 20-29 minutes | 22 | 17 |
| New patient office or other outpatient visit, 45-59 minutes | 18 | 18 |
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 | 59 |
| Brimonidine Tartrate Other prescribers in New York, NY | 42 |
| Prednisolone Acetate Other prescribers in New York, NY | 39 |
| Dorzolamide Hcl Other prescribers in New York, NY | 31 |
| Ilevro (nepafenac) | 31 |
| Polymyxin B Sul-Trimethoprim (polymyxin b sulf/trimethoprim) | 28 |
| Neomycin-Polymyxin-Dexameth (neomycin/polymyxin b/dexametha) Other prescribers in New York, NY | 23 |
| Dorzolamide-Timolol (dorzolamide hcl/timolol maleat) Other prescribers in New York, NY | 20 |
| Combigan (brimonidine tartrate/timolol) Other prescribers in New York, NY | 18 |
| Difluprednate | 14 |
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, 8 companies reported 13 payments worth $637 in total to this clinician.
| Topcon Healthcare, Inc. | $136 |
|---|---|
| Sight Sciences, Inc. | $125 |
| Alcon Vision LLC | $105 |
| Astellas Pharma US Inc | $79.98 |
| Ani Pharmaceuticals, Inc. | $71.43 |
| AbbVie Inc. | $68.49 |
| Apellis Pharmaceuticals, Inc. | $26.11 |
| Regeneron Healthcare Solutions, Inc. | $24.88 |
| Food and Beverage | $637 |
|---|
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.