Medicare Enrolled
Dr. Constantin Marcu, MD
Magnetic Resonance Imaging · Greenville, NC
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Marcu from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Marcu
Dr. Constantin Marcu is a magnetic resonance imaging specialist in Greenville, NC, with 20 years of NPI registration. Based on federal Medicare data, Dr. Marcu performed 62,048 Medicare services across 6,092 unique beneficiaries.
Between the years covered by Open Payments, Dr. Marcu received a total of $436 from 2 pharmaceutical and/or device companies across 15 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in magnetic resonance imaging. 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. Marcu 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.
✓ 20 years in practice
▲ 62,048 Medicare services
$436 industry payments
Medicare Practice Summary
Medicare Utilization ↗62,048
Medicare services
1.0× state median for magnetic resonance imaging
6,092
Unique beneficiaries
$6
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~3,102 Medicare services per year of practice
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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
55,959 | $0 | $1 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
574 | $10 | $96 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
555 | $135 | $2,102 |
| Blood creatinine level test A blood test that measures the amount of creatinine, a waste product from muscle wear and tear, to help assess kidney function. |
319 | $5 | $31 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
311 | $17 | $86 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
280 | $42 | $113 |
| 3D radiographic procedure A radiographic imaging technique that creates three-dimensional representations of internal structures. |
261 | $17 | $614 |
| CT scan of chest blood vessels with contrast A CT scan that uses contrast dye to create detailed images of the blood vessels in the chest. |
238 | $122 | $1,807 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
237 | $8 | $18 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
231 | $8 | $38 |
| CT scan of abdominal and pelvic blood vessels with contrast A computed tomography scan that uses contrast dye to visualize the blood vessels in the abdomen and pelvis. |
225 | $219 | $1,846 |
| Heart muscle strain imaging | 208 | $27 | $93 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
204 | $85 | $125 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
200 | $8 | $62 |
| MRI of heart blood flow An MRI scan that visualizes the flow of blood within the heart. |
189 | $9 | $54 |
| MRI of heart with and without contrast A magnetic resonance imaging scan of the heart performed both before and after the administration of a contrast dye to enhance image detail. |
180 | $95 | $594 |
| CT scan of chest, without contrast A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye. |
179 | $57 | $1,033 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
157 | $18 | $159 |
| Low dose CT scan of chest for lung cancer screening A specialized CT scan of the chest using a lower radiation dose to screen for lung cancer. |
146 | $86 | $333 |
| 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. |
139 | $93 | $215 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
114 | $10 | $73 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram under physician supervision and review. |
108 | $48 | $513 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
100 | $331 | $2,912 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
95 | $84 | $1,162 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
90 | $13 | $89 |
| Follow-up ultrasound of heart blood flow, valves and chambers An ultrasound exam that follows up on the heart's blood flow, valves, and chambers. It uses sound waves to create images of the heart's structure and function. |
86 | $5 | $101 |
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
83 | $2 | $20 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
79 | $2 | $124 |
| CT scan of heart blood vessels and grafts with contrast A CT scan that uses contrast dye to create detailed images of the heart's blood vessels and any surgical grafts. |
62 | $207 | $2,201 |
| CT scan of head/brain, without contrast A CT scan uses X-rays to create detailed images of the head or brain without the use of contrast dye. |
58 | $47 | $973 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram, with physician review of the results. |
56 | $9 | $186 |
| CT scan of abdomen and pelvis with contrast A CT scan that uses dye to create detailed images of the abdomen and pelvis. This imaging test helps doctors examine internal organs and structures in these areas. |
40 | $165 | $1,044 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
35 | $115 | $330 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
30 | $20 | $51 |
| CT scan of abdomen and pelvis, without contrast A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye. |
28 | $72 | $562 |
| Liver function blood test panel | 28 | $8 | $65 |
| CT scan of heart with contrast A computed tomography scan that uses contrast dye to create detailed images of the heart's structure. |
26 | $114 | $449 |
| Natriuretic peptide level test A blood test that measures the level of natriuretic peptide, a protein produced by the heart and blood vessels. |
22 | $38 | $136 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
22 | $16 | $119 |
| Aminophylline injection, up to 250 mg Administration of aminophylline medication via injection for a dose of up to 250 mg. |
20 | $7 | $21 |
| CT scan of head blood vessels with contrast A CT scan that uses contrast dye to create detailed images of the blood vessels in the head. |
18 | $134 | $1,114 |
| CT scan of neck blood vessels with contrast A computed tomography scan that uses dye to visualize the blood vessels in the neck. This imaging test helps examine the structure and flow within the neck's vascular system. |
17 | $119 | $1,653 |
| SPECT nuclear medicine scan, 1 area A nuclear medicine imaging test using a single photon emission computed tomography (SPECT) scan to create detailed images of one specific area of the body. |
16 | $39 | $2,153 |
| MRI of heart, without contrast A magnetic resonance imaging scan of the heart performed without the use of contrast dye to visualize cardiac structures. |
12 | $72 | $928 |
| CT scan of heart for calcium evaluation A CT scan of the heart used to evaluate calcium levels in the blood vessels. |
11 | $49 | $149 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
1.0% high complexity
94.6% medium
4.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$436
Total received (2018-2024)
Avg $218/year across 2 years
1.0× state median for specialty
2
Companies
15
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$436 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$422
2018
$14
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Abbott Laboratories
$422
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Abbott Laboratories
$422
Janssen Pharmaceuticals, Inc
$14
Top 3 companies account for 100.0% of all-time payments
Associated products mentioned in payments ›
AMPLATZER AMULET · XARELTO
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Magnetic resonance imagings within 10 mi
1
Per 100K population
0.6
County median income
$58,851
Nearest hospital
ECU HEALTH MEDICAL CENTER
0.0 mi
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. Marcu is a mixed practice specialist, 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
Is Dr. Marcu experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Marcu performed 55,959 contrast dye for imaging (iodine-based) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Marcu receive payments from pharmaceutical companies?
Yes. Dr. Marcu received a total of $436 from 2 companies across 15 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Marcu's costs compare to other magnetic resonance imagings in Greenville?
Dr. Marcu's average Medicare payment per service is $6. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Marcu) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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