Dr. Brennan P. Greene, MD
Ophthalmology (Ophthalmology Physician)
1536 Story Ave, The Eye Care Institute Building
Louisville, KY 40206
- Medicare participating
At a glance
- Medical school
- University of Louisville School of Medicine (1991)
- Years since graduation
- 35
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 1,274
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
- 1991Medical school: University of Louisville School of Medicine
- 2006Registered 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
-
Ophthalmology Physician primary
KY license 28804
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- University of Louisville Physicians Inc (1,445 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
- 1,274
- Services billed
- 7,704
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Established patient complete exam of visual system | 1,443 | 1,168 |
| Established patient problem focused exam of visual system | 455 | 291 |
| Imaging of retina | 427 | 242 |
| Measurement of corneal curvature and depth of eye | 213 | 142 |
| Removal of cataract with insertion of prosthetic lens | 200 | 122 |
| Exam of visual field with extended testing | 200 | 190 |
| Imaging of optic nerve | 190 | 187 |
| Removal of recurring cataract in lens capsule using a laser | 140 | 100 |
| New patient complete exam of visual system | 114 | 114 |
| Injection of drug into eye | 94 | 23 |
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 Louisville, KY | 357 |
| Ketorolac Tromethamine Other prescribers in Louisville, KY | 275 |
| Prednisolone Acetate Other prescribers in Louisville, KY | 236 |
| Timolol Maleate Other prescribers in Louisville, KY | 224 |
| Lumigan (bimatoprost) Other prescribers in Louisville, KY | 115 |
| Restasis (cyclosporine) Other prescribers in Louisville, KY | 88 |
| Rocklatan (netarsudil mesylat/latanoprost) Other prescribers in Louisville, KY | 63 |
| Brimonidine Tartrate Other prescribers in Louisville, KY | 58 |
| Dorzolamide-Timolol (dorzolamide hcl/timolol maleat) Other prescribers in Louisville, KY | 57 |
| Combigan (brimonidine tartrate/timolol) Other prescribers in Louisville, KY | 55 |
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 23 payments worth $530 in total to this clinician.
| Bausch & Lomb Americas Inc. | $106 |
|---|---|
| Tarsus Pharmaceuticals, Inc. | $101 |
| Sun Pharmaceutical Industries Inc. | $63.56 |
| Harrow Eye, LLC | $51.59 |
| Regeneron Healthcare Solutions, Inc. | $51.40 |
| Alcon Vision LLC | $37.99 |
| Oyster Point Pharma, Inc. | $37.33 |
| Ani Pharmaceuticals, Inc. | $33.19 |
| Food and Beverage | $530 |
|---|
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.
Industry-funded research
Named as a principal investigator on 2 industry-funded studies in 2025, from 1 companies. The companies reported $60,387 in research payments for these studies, mostly to the institutions running them.
- Long-term Safety and Efficacy Extension Trial of Bimatoprost SR
AbbVie Inc. · Completed · NCT03891446 - Long-term Safety and Efficacy Extension Trial of Bimatoprost SR
AbbVie Inc.
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.