Dr. Alfred Marrone, M.D.
What this data tells you about Dr. Marrone
Dr. Alfred Marrone is an ophthalmology specialist in Torrance, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Marrone performed 1,983 Medicare services across 1,639 unique beneficiaries.
Between the years covered by Open Payments, Dr. Marrone received a total of $1,273 from 15 pharmaceutical and/or device companies across 51 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in ophthalmology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Marrone is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Eye exam, established patient, focused A limited examination of the visual system for an existing patient. The provider focuses on a specific eye-related concern or symptom. |
518 | $75 | $154 |
| Comprehensive eye exam, established patient A comprehensive examination of the visual system performed for a patient who has previously been seen by the provider. |
506 | $100 | $215 |
| Visual field test, extended A test that maps your complete field of vision to detect blind spots or peripheral vision loss. Extended testing provides a more detailed assessment than a standard visual field exam. |
206 | $50 | $188 |
| Optic nerve imaging (OCT scan) Imaging of the optic nerve. |
146 | $29 | $138 |
| New patient eye exam, problem focused A focused examination of the visual system performed during a new patient visit. |
85 | $69 | $150 |
| Eye photography Photographic imaging of the interior structures of the eye. |
78 | $19 | $115 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
61 | $104 | $421 |
| Comprehensive eye exam, new patient A comprehensive examination of the visual system performed for a new patient. |
53 | $115 | $236 |
| Corneal topography and eye depth measurement This procedure measures the curvature and depth of the cornea, the clear front surface of the eye. |
53 | $39 | $158 |
| Cataract surgery with lens implant Surgical removal of the clouded natural lens of the eye and replacement with an artificial prosthetic lens to restore vision. |
45 | $474 | $2,570 |
| CT scan of cornea A computed tomography scan used to create detailed images of the cornea, the clear front part of the eye. |
39 | $25 | $126 |
| Retinal photography (fundus photo) This procedure involves taking photographs of the retina, the light-sensitive tissue at the back of the eye. It is used to document the condition of the eye's interior structures. |
31 | $32 | $159 |
| Ultrasound scan of cornea to determine thickness An ultrasound procedure used to measure the thickness of the cornea. |
26 | $8 | $74 |
| Retinal imaging (OCT scan) This procedure involves imaging the retina to visualize its structure. It is used to examine the back of the eye. |
26 | $34 | $155 |
| Eyelid growth removal A procedure to remove a growth from the eyelid. |
24 | $262 | $619 |
| Upper eyelid tendon repair Surgical repair of the tendon in the upper eyelid to restore its function and structure. |
18 | $845 | $3,256 |
| Laser removal of recurring cataract A laser procedure to remove a recurring cataract within the lens capsule. |
17 | $280 | $924 |
| Nasal tear duct probing A procedure to examine and clear the tear ducts in the nose. It helps restore normal drainage of tears from the eye. |
14 | $135 | $432 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
14 | $51 | $230 |
| Extensive repair of turning-outward eyelid defect A surgical procedure to correct an eyelid that turns outward. The repair addresses defects in the eyelid structure to restore normal function and appearance. |
12 | $481 | $2,342 |
| Eyelid biopsy A procedure to remove a small sample of tissue from the eyelid for laboratory examination. |
11 | $173 | $347 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Marrone is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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