Dr. Marc Greenberg, MD
What this data tells you about Dr. Greenberg
Dr. Marc Greenberg is an ophthalmology specialist in Marietta, GA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Greenberg performed 471 Medicare services across 438 unique beneficiaries.
Between the years covered by Open Payments, Dr. Greenberg received a total of $278 from 3 pharmaceutical and/or device companies across 5 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. Greenberg 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 deviation and range of motion exam An examination to measure eye deviation and assess the range of motion of the eyes. |
147 | $46 | $159 |
| 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. |
92 | $62 | $225 |
| Realignment of horizontal eye muscle A surgical procedure to adjust the position or tension of the horizontal muscles that control eye movement. This is performed to correct misalignment of the eyes. |
43 | $405 | $2,809 |
| Complex eye muscle realignment surgery Surgical adjustment of an eye muscle to correct alignment when scarring or restricted movement is present. |
41 | $165 | $2,106 |
| Vertical eye muscle realignment A surgical procedure to adjust the position or tension of the muscles that control vertical eye movement. |
40 | $321 | $2,895 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
38 | $71 | $281 |
| Eye muscle relocation surgery A surgical procedure to reposition an eye muscle to restore proper eye function. |
31 | $161 | $1,963 |
| New patient eye exam, problem focused A focused examination of the visual system performed during a new patient visit. |
20 | $65 | $215 |
| Eye muscle repair, 2 horizontal muscles Surgical procedure to realign the eye by repairing two horizontal eye muscles. |
19 | $537 | $3,217 |
Industry Payment Transparency
Open Payments through 2022 ↗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 (2022)
All-time payments by company (2019-2022) ›
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 2022 |
| 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. Greenberg is a cardiac surgery specialist, with moderate Medicare volume, with low-engagement industry engagement, with 20 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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