Dr. Jack Greenwood, MD
What this data tells you about Dr. Greenwood
Dr. Jack Greenwood is a neurology with special qualifications in child neurology physician in Port Jefferson, NY, with 21 years of NPI registration. Based on federal Medicare data, Dr. Greenwood performed 329 Medicare services across 279 unique beneficiaries.
Between the years covered by Open Payments, Dr. Greenwood received a total of $1,543 from 19 pharmaceutical and/or device companies across 90 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurology with special qualifications in child neurology physician. 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. Greenwood 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 |
|---|---|---|---|
| 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. |
102 | $106 | $250 |
| Vestibular function test with thermal irrigation A test that assesses balance by irrigating both ears with warm and cool fluids to evaluate inner ear function. |
37 | $27 | $250 |
| Balance testing with recording A procedure to evaluate balance function by recording the results during testing. |
37 | $69 | $250 |
| Vestibular function test using rotating chair This test evaluates eye movement and balance function by having the patient sit in a rotating chair. It helps assess how the inner ear and brain coordinate to maintain stability. |
37 | $13 | $250 |
| Balance and posture test A test to evaluate a patient's balance and posture. This assessment measures stability and body alignment. |
37 | $30 | $250 |
| New patient office visit, complex (60-74 min) | 34 | $193 | $250 |
| Autonomic nervous system function test This test evaluates how well the sympathetic nervous system is functioning. It assesses the automatic control of bodily processes such as heart rate and blood pressure. |
33 | $40 | $400 |
| Awake and drowsy EEG A test that records electrical activity in the brain while the patient is awake and drowsy. |
12 | $50 | $800 |
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 (96%) 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. Greenwood is a clinical cardiology specialist, with above-average Medicare volume (top 24% in NY), with low-engagement industry engagement, with 21 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Greenwood experienced with office visit, established patient (30-39 min)?
Does Dr. Greenwood receive payments from pharmaceutical companies?
How do Dr. Greenwood's costs compare to other neurology with special qualifications in child neurology physicians in Port Jefferson?
What does Data Coverage mean?
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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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