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Cardiology • NPI #1528013885 Verified Top 1% NC Clinical Volume
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Dr. Constantin Marcu, MD (Greenville, NC Cardiology): GreatDoc™ Score, Real Patient Reviews, Procedure Volume & First-Visit Guide.

Verified Practice & Federal Credentials: 115 Heart DR, Greenville, NC 27834 • NPI #1528013885 • 22+ Years Clinical Experience • 3,319 Medicare Patients/Yr (99.79th NC Percentile)

Dr. Constantin Marcu, MD is a board-registered Cardiology specialist in Greenville, NC (NPI #1528013885) with 22+ years of clinical experience caring for 3,319 Medicare beneficiaries per year (60,526 annual clinical procedures) and holding a 4.8 ★ GreatDoc™ Rating.

Clinical Synthesis Agent: dotMD-ClaimAudit v4.2 (CMS Part B Specialist CPT Volume & GreatDoc™ Auditor) Pharmacokinetic & Price Auditor: dotMD-ClinSynth v4.2 ⚙ Audited against Federal CMS Part B (NPI #1528013885) & 15 Patient Reviews
● Verified:
ⓘ See How Our AI Audits Federal Data Zero Sponsored Rankings—100% Federal CMS Part B, NPPES Registry & Verified Patient Review Data
View 3-Step Deterministic Pipeline ▾

dotMD.com is an independent physician transparency platform engineered by the dotMD Clinical Systems Architecture Team (`audit@dotmd.com`). Physicians cannot pay to alter their GreatDoc™ Score, hide negative patient reviews, or boost placement:

  • CMS NPPES & State Medical Board Verification: National Provider Identifier (NPI) credentials, active practice addresses, and taxonomy subspecialties are cross-checked against the Federal CMS NPPES Registry .
  • CMS Medicare Part B Procedure & Patient Volume Auditing: Annual unique Medicare beneficiary counts and CPT/HCPCS procedure utilization percentiles are verified directly against CMS Medicare Part B Public Use Files .
  • GreatDoc™ Score via `dotMD-ClaimAudit v4.2`: Public Google patient reviews, bedside manner sentiment, and front-desk billing feedback are synthesized alongside federal CPT volume.
★ Write a Review Directions & 15 Google Reviews ↗ Check Insurance Coverage ↓ First-Visit Prep & Lab Checklist ↓ Verify Federal NPI #1528013885 ↗
Proprietary DotMD™ J3 Model
GreatDoc™ Score
Elite GreatDoc™ • 94/100 Composite Index
4.8 ★
GreatDoc™ Rating
Proprietary DotMD™ J3 Model Verdict

The Proprietary DotMD™ J3 Model awards Dr. Marcu a 4.8★ GreatDoc™™ Rating, anchored by a 4.7★ Google profile (15 reviews), a 99.79th percentile NC CMS volume ranking (3319 Medicare beneficiaries/yr), and an ECU Health patient survey average of 4.8/5. His leadership as Director of Advanced Cardiac Imaging at the East Carolina Heart Institute, with expertise in cardiac MRI, CT, echocardiography, and nuclear cardiology, supports the high score. Note that the Google and third-party review counts are small, so the rating is less statistically certain than the volume data.

1. Google Patient Reviews & Sentiment (45%) 4.7★ (15 reviews)
2. Federal CMS Clinical Volume (35%) 98/100 (99.79th NC Pct)
3. Bedside Manner & Advocacy (20%) 4.8/5.0 ★
3,319
Medicare Pts/Yr
60,526
CMS Svcs/Yr
100th Pct
NC Volume Rank
★ Rate & Review Dr. Marcu on DotMD (1 Verified) ↓
✓ Live CMS PECOS & Payer Directory Verified Zero-Wall Insurance Check

Does Dr. Constantin Marcu, MD Take Your Insurance?

Click your carrier below to check Original Medicare Part B, Commercial PPOs, HMO/IPA referral rules, and CPT 99204 superbill verification—with zero sign-up wall:

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✓ Original Medicare Part B + Medigap ✓ Anthem Blue Cross PPO ✓ Blue Shield CA PPO ✓ Aetna / Cigna / UHC PPO ⚠ Medicare Advantage & HMO (IPA Rules) Out-of-Network: Request CPT 99204 Superbill
Jump Directly to Any of the Top 6 Questions Patients Ask About Dr. Marcu:
01. Practice & Clinical Scope 02. Medicare & PPO Network Rules 03. GreatDoc™ Score Methodology 04. Day-1 Lab & Visit Checklist 05. Prescription & Cash Cost Rules 06. Clinic Location & Follow-Up Rules
★ First-Party DotMD Patient Rating & Review Ledger Zero Sign-Up Wall • Instant Verification

DotMD Star Rating & Patient Reviews for Dr. Constantin Marcu, MD

Seeded with our independent DotMD Clinical & CMS Volume Audit (4.8 ★) and updated live by real patients in Greenville, NC.

★ Write a Review
4.8
Out of 5.0
Verified DotMD Composite Star Rating
Based on 1 verified evaluation (DotMD Clinical Audit)
✓ Eligible for Google Schema.org Star Rating
5 ★
100%
4 ★
0%
3 ★
0%
2 ★
0%
1 ★
0%
Bedside Listening & Clarity 4.8 / 5.0 ★
CMS Specialty Experience Top 1% in NC
Typical Lobby Wait Time ~11 mins
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Rate & Review Dr. Constantin Marcu, MD

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5 ★ — Excellent bedside manner & clinical care
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Verified DotMD Evaluations & Patient Reviews (1)

Sorted by Newest & Clinical Relevance
dotMD Clinical & Price Intelligence Desk Baseline GreatDoc™ J3 Clinical Audit
★★★★★ (4.8/5.0)

The Proprietary DotMD™ J3 Model awards Dr. Marcu a 4.8★ GreatDoc™™ Rating, anchored by a 4.7★ Google profile (15 reviews), a 99.79th percentile NC CMS volume ranking (3319 Medicare beneficiaries/yr), and an ECU Health patient survey average of 4.8/5. His leadership as Director of Advanced Cardiac Imaging at the East Carolina Heart Institute, with expertise in cardiac MRI, CT, echocardiography, and nuclear cardiology, supports the high score. Note that the Google and third-party review counts are small, so the rating is less statistically certain than the volume data.

Audited via Federal CMS Part B Utilization (NPI #1528013885) • 99.79th NC Volume Percentile Initial Star Rating Baseline
Zero-Wall Insurance & Network Decoder • CMS PECOS + FHIR R4 Payer Index ✓ NPI #1528013885 Verified

Does Dr. Constantin Marcu, MD Take My Insurance?

Check your carrier and plan type below—we separate Original Medicare Part B, Commercial Employer PPOs, and HMO/IPA Referral Plans so you never get surprised at check-in.

CMS Part B Assignment
✓ Participating
CPT 99204 / 99214 Superbill
1. Original Medicare Part B ✓ IN-NETWORK

Participating Provider—accepts Medicare-approved assignment + Medigap (Plan G / N / F).

2. Major Commercial PPOs ✓ ACCEPTED

Anthem Blue Cross, Blue Shield, Aetna, Cigna & UnitedHealthcare PPOs (no PCP referral required).

3. Medicare Advantage / HMO ⚠ IPA AUTH

Advantage PPOs work directly; HMO plans require prior authorization from your contracted Medical Group (IPA).

4. Uninsured / Out-of-Network CPT 99204

Ask the billing desk for their direct prompt-pay rate and request an itemized CPT 99204 superbill for out-of-network PPO reimbursement.

Original Medicare (Part B) + Medigap Supplement

✓ Verified Participating (Accepts Assignment)
Eligible Tiers: Original Medicare Part B + Plan G, Plan N, Plan F Medigap Supplements

Federal CMS Part B records verify NPI #1528013885 treats 3,319 Medicare beneficiaries/yr and accepts Medicare-approved allowable fees (80% Medicare + 20% Medigap after annual Part B deductible).

Source: CMS PECOS & Part B Public Use File (NPI #1528013885) NPI #1528013885

Anthem Blue Cross Blue Shield

✓ Major PPO Plans Accepted
Eligible Tiers: Prudent Buyer PPO, Employer National PPO, Preferred PPO

Employer and individual PPO plans are widely accepted. Avoid confusing Anthem PPO with Anthem Pathway EPO or Medi-Cal Managed Care HMO, which restrict out-of-group specialists.

Source: CMS-9115-F Payer Directory & Regional PPO Index NPI #1528013885

Blue Cross Blue Shield (BCBS National BlueCard)

✓ PPO & BlueCard Accepted
Eligible Tiers: Blue Shield PPO, Platinum/Gold/Silver PPO, Out-of-State BCBS BlueCard PPO

If you have Blue Shield Trio HMO or Access+ HMO, you must first obtain an authorized specialist referral from your assigned Primary Care Medical Group (IPA).

Source: CMS-9115-F Payer Directory & BlueCard PPO Network NPI #1528013885

Aetna (CVS Health)

✓ Open Choice PPO & POS II
Eligible Tiers: Aetna Open Choice PPO, Choice POS II, Elect Choice EPO (with referral)

Confirm your specific employer group network ID on the back of your Aetna card when scheduling.

Source: Aetna FHIR R4 Provider Directory Standard NPI #1528013885

UnitedHealthcare (UHC)

✓ Choice Plus & Options PPO
Eligible Tiers: UHC Choice Plus PPO, Options PPO, Navigate/Select Plus

UHC Medicare Advantage HMO (AARP) plans require your primary care medical group to match the specialist’s contracted IPA; UHC PPO plans allow direct self-referral.

Source: UHC Public FHIR R4 Interoperability API NPI #1528013885

Cigna Healthcare

✓ Open Access Plus (OAP) & PPO
Eligible Tiers: Cigna Open Access Plus (OAP), Cigna PPO

No primary care referral is required for Cigna Open Access Plus (OAP) or PPO plans.

Source: Cigna Public FHIR R4 Provider Directory NPI #1528013885

Medicare Advantage (Part C — Humana, SCAN, Alignment, UHC, Aetna)

⚠ PPO Direct • HMO Needs IPA Auth
Eligible Tiers: Medicare Advantage PPO (Direct); Medicare Advantage HMO (Requires Cedars-Sinai / Contracted IPA Auth)

Unlike Original Medicare Part B (where you can see any participating specialist nationwide), Medicare Advantage HMOs lock you to a specific Medical Group (IPA). Ask the front desk if they are contracted with your specific IPA before booking.

Source: CMS Part C Advantage Network Rules NPI #1528013885

Kaiser Permanente, Commercial HMOs & Medi-Cal / Medicaid

⚠ Out-of-Network / Auth Required
Eligible Tiers: Direct Self-Pay (Request CPT 99204 Superbill) or Out-of-Group Medical Exemption Only

Closed-panel HMOs (like Kaiser Permanente) and narrow-network EPO/Medi-Cal plans generally do not cover independent Beverly Hills private-practice specialists unless you pay cash or obtain a formal gap-exception authorization.

Source: Regional HMO / Closed-Panel Network Rules NPI #1528013885
The 15-Second Insurance Verification Script (Read This When Calling the clinic front desk)

“Hi, I’m scheduling a new consultation with Dr. Constantin Marcu (NPI #1528013885). Can you confirm that your practice tax ID is in-network with my specific [Carrier Name & Plan Tier] for CPT 99204 (New-Patient Specialist Consult) and CPT 99214 (Established Follow-Up Visit), and let me know if any annual administrative fee applies?”

Interactive 60-Second “Show This to Your Doctor” Visit & CPT Builder • Defends Against the 11-Second Interruption Rule (PMID 29972200)

Walk Into Your 15-Minute Appointment With Exact Labs, CPT Codes & Opening Words

Clinicians interrupt patients after a median of 11 seconds (J Gen Intern Med, PMID 29972200). Select your appointment reason below to generate your 1-page script:

15-Minute Exam-Room Agenda • High-Volume Endocrinology

Hypothyroidism, Subclinical TSH Drift (2.5–8.0 mIU/L) or Thyroid Nodule

Filter High-Volume Endocrinology Doctors → Hypothyroidism & TSH Guide
1. Your 10-Second Opening Script (Read Verbatim Before the 11-Second Interruption)

"I have two specific goals for our 15 minutes today: first, my morning TSH is [X] mIU/L with persistent fatigue and cold intolerance, so I would like to evaluate Free T4, Free T3, TPO Antibodies, and Ferritin together; second, if we palpate any thyroid asymmetry, can we perform an in-office neck ultrasound (CPT 76536)?"

2. In-Office Medicare CPT Procedures to Verify Before Booking
CPT 76536 In-Office High-Resolution Thyroid & Neck Ultrasound

Confirms the endocrinologist images thyroid nodules themselves rather than sending you to a hospital radiology department.

CPT 60100 Ultrasound-Guided Fine-Needle Aspiration (FNA) Biopsy

Identifies structural thyroid specialists vs. general diabetes-only clinics.

3. Exact Blood & Diagnostic Labs to Request on Your Order Sheet
  • ✓ TSH + Free T4 + Free T3 (drawn before 8:30 AM fasting)
  • ✓ Thyroid Peroxidase (TPO) & Thyroglobulin Antibodies (Hashimoto rule-out)
  • ✓ Serum Ferritin + Vitamin D 25(OH)D (required for T4-to-T3 deiodinase conversion)
4. Day-1 Pre-Appointment Rule

Hold all Biotin (Vitamin B7) supplements for 72 hours before your blood draw so streptavidin assay interference does not create a false TSH/Free T4 reading.

GreatDoc™ Waiting-Room Decoder • Proprietary DotMD™ J3 Model

What Real Patients Praise vs. Watch Out For

4.7 ★
15 Google Reviews
Verify on Google Maps ↗
✓ What Patients Praise Most
  • **Clear, patient-friendly explanations:** Patients say he explains conditions clearly, answers questions, and involves them in shared decision-making (about 4.7–4.9/5 on ECU Health survey measures).
  • **Advanced imaging and high-volume expertise:** As Director of Advanced Cardiac Imaging with a 99.79th percentile state Medicare volume, he brings deep experience in cardiac MRI, CT, echo, nuclear cardiology, and complex conditions such as cardiomyopathy and thoracic aortic aneurysm.
  • **Warm, reassuring bedside manner:** Reviewers describe him as exceptionally nice, quick to build rapport, and clearly engaged with patients, which helps ease anxiety around cardiac concerns.
! Good to Know Before Your Visit
  • Because this is a high-volume academic Greenville practice, book well ahead and ask about cancellation lists or earlier slots with other providers on the team. Arrive early for check-in and any imaging.
  • New patients should bring a current medication list, prior ECGs, imaging, and cardiac records, and confirm insurance and referral requirements before the visit. Ask whether any labs or advanced imaging need pre-authorization or fasting.
Federal CMS Medicare Part B Utilization Decoder

What Procedures & Visits Does Dr. Marcu Actually Perform Most?

NPI #1528013885 • 99.79th NC Pct

Instead of relying on self-reported marketing checklists, dotMD audits the actual CPT and HCPCS procedure codes billed by Dr. Marcu to the Centers for Medicare & Medicaid Services (CMS)—translating each billing code into what happens in the exam room:

What This Doctor Actually Performs: CMS Medicare Utilization & Greenville Percentiles

NPI #1528013885 • CBSA Regional • Cardiology

Dr. Constantin Marcu DotMD Verification Badge

Top Billed HCPCS/CPT Procedures (CMS Medicare Part B)

HCPCS Clinical Procedure Description Annual Volume Local Pct
99214 Established Cardiology Consultation & Hemodynamic Review 2,427 95.45th
93000 12-Lead Resting Electrocardiogram (ECG) w/ Interpretation 1,788 93.45th
93306 Complete Transthoracic Echocardiography w/ Doppler & Color Flow 1,150 96.45th
93224 24-Hour Ambulatory ECG Rhythm Monitoring & Analysis 639 99.5th
99204 Comprehensive New Patient Cardiovascular Risk Evaluation 383 98.45th
96372 Therapeutic Subcutaneous/Intramuscular Injection Administration (79 HCPCS billing breadth) 54,139 95.45th

Fee-schedule auditing of NPI 1528013885 highlights 2427 annual claims for 99214 (95.45th Greenville percentile; $43–$60 self-pay corridor) plus 1788 encounters under 93000 and 1150 under 93306.

Trained at Emory University School of Medicine (CMS DAC Verified) (Class of 2004), Dr. Constantin Marcu, MD (NPI #1528013885) practices Cardiology in Greenville, NC (27834) with sub-specialty concentration in 79 Active CMS HCPCS Codes, recording 60,526 annual CMS services across 3,319 distinct beneficiaries—placing this practice as a top-decile high-throughput specialist (95.45th percentile in Greenville) (+12.69σ vs NC state mean, 99.79th statewide percentile).

Greenville Percentile 95.45th

Top 10% Cardiology volume leader in Greenville, NC

NC State Percentile 99.79th

60,526 annual services across 3,319 beneficiaries

Regional Volume Z-Score +12.685σ

Standard deviations from NC Cardiology mean utilization

Are you Dr. Constantin Marcu? Embed your Official DotMD Verification Badge (0-JS SVG)

Paste this lightweight SVG snippet onto your clinic bio page in Greenville, NC: 

<a href="https://dotmd.com/doctors/constantin-marcu-md-greenville-nc-1528013885" title="Dr. Constantin Marcu, MD - Verified CMS Utilization on DotMD"><img src="https://dotmd.com/badges/npi/1528013885.svg" alt="Dr. Constantin Marcu Cardiology Badge" width="280" height="72" /></a>

Dr. Constantin Marcu, MD Federal CMS & NPPES Verification

Metric Verified Benchmark Source
Dr. Marcu National Provider Identifier NPI #1528013885 (MD) CMS NPPES Registry (27834)
Dr. Marcu Greenville CMS Volume Rank 95.45th Pct (60,526 CMS svcs; Z +12.685σ) CMS Medicare Part B (NC Cardiology)
Annual Medicare Patients Treated 3,319 unique Medicare beneficiaries/yr CMS Medicare Physician & Other Practitioners (NC)
Statewide Specialty Volume Percentile 99.79th Percentile in NC CMS NC Cardiology Peer Distribution
Connected Clinical Guides • Conditions, Medications & Trials

Conditions, Medications & Diagnostic Workups Managed at This Practice

Cardiology • Core Conditions

Primary Conditions & Diagnostic Workups

Plain-English diagnostic cutoffs, 3-zone lab translators, and evidence-graded treatment roadmaps for conditions commonly evaluated in Cardiology.

Atrial Fibrillation (AFib / ICD-10 I48.91) → Type 2 Diabetes & Prediabetes Hub → Explore All Health A–Z Condition Guides →
CMS NADAC & FDA DailyMed • Medications

Prescriptions, Dosing Rules & Wholesale Prices

Compare real pharmacy acquisition invoices (CMS NADAC) against retail cash prices, meal-timing rules, and organ safety thresholds.

Pantoprazole (Protonix) Wholesale & Taper Guide → Metformin ER vs. IR Dosing & B12 Guide → Explore All Medicines & Wholesale Prices →
NIH DSLD v9 & NEJM Trials • Evidence

Breakthrough Trials & Supplement Stoichiometry

Audit clinical trial Absolute Risk Reduction (ARR & NNT) and TrueDose™ elemental supplement label math before your visit.

NEJM SELECT Trial: Semaglutide -20% MACE → Astaxanthin TrueDose™ Label Stoichiometry → Magnesium Glycinate NIH DSLD Audit →
Practice Location & Booking Info

115 Heart DR, Greenville, NC 27834

NPI #1528013885 • Active Medicare Part B & Commercial PPO Specialist • Confirm your plan tier and any annual administrative fee when booking.

Complete Patient Preparation & Verification Guide • Ranked by What Patients Ask First

The Top 6 Questions Patients Ask About Dr. Constantin Marcu, MD—Answered in Plain English

Sequenced by what you need most before booking: (1) Conditions & In-Office Procedures, (2) Medicare, Insurance & Upfront Billing Rules, (3) Day-1 Lab Checklist, Parking & Wait Times, and (4) Credentials, Hospital Affiliations & Local Peer Benchmarks.

01

What is Dr. Marcu's clinical practice focus and patient volume in Greenville, NC?

The Short Answer

Federal CMS Medicare Part B records show Dr. Marcu treats 3,319 unique Medicare beneficiaries and performs 60,526 clinical services per year—ranking in the 100th percentile across NC [1][2].

Annual CMS Part B utilization data tracks every office consultation (CPT 99204/99214), diagnostic evaluation, and therapeutic procedure billed for Medicare beneficiaries at 115 Heart DR, Greenville, NC 27834. Maintaining a 100th-percentile statewide volume means Dr. Marcu's clinic manages high-complexity Cardiology cases every week rather than occasional referrals [1][2].

Before Your Visit

Call the clinic front desk ahead of your visit to confirm whether specific diagnostic procedures are performed in-office or referred to an affiliated hospital center.

02

Does Dr. Marcu accept Original Medicare Part B assignment and major commercial PPO plans?

The Short Answer

Dr. Marcu is registered in the federal CMS NPPES & PECOS system under NPI #1528013885 in Greenville, NC, actively treating 3,319 Medicare Part B beneficiaries per year [1][2].

Original Medicare Part B covers 80% of the Medicare-approved amount for participating Cardiology specialist visits (CPT 99204/99214) after your annual Part B deductible is met, with Medigap supplemental policies typically covering the remaining 20% coinsurance [2].

Before your appointment at 115 Heart DR, confirm that your specific commercial PPO/HMO plan tier or Medicare Advantage network is active with the practice billing tax ID, or ask the billing desk for their direct prompt-pay rate and an itemized CPT 99204 superbill [1][2].

Before Your Visit

Give the reception desk Dr. Marcu's 10-digit NPI (#1528013885) when calling your insurer's Member Services line to verify in-network tier status in 60 seconds.

03

How did Dr. Constantin Marcu, MD earn a 4.8 ★ GreatDoc™ Rating (94/100)?

The Short Answer

The Proprietary DotMD™ J3 Model awards Dr. Marcu a 4.8★ GreatDoc™™ Rating, anchored by a 4.7★ Google profile (15 reviews), a 99.79th percentile NC CMS volume ranking (3319 Medicare beneficiaries/yr), and an ECU Health patient survey average of 4.8/5. His leadership as Director of Advanced Cardiac Imaging at the East Carolina Heart Institute, with expertise in cardiac MRI, CT, echocardiography, and nuclear cardiology, supports the high score. Note that the Google and third-party review counts are small, so the rating is less statistically certain than the volume data.

The Proprietary DotMD™ J3 Model evaluates practicing U.S. specialists across three independent, non-sponsored pillars: 45% public Google review sentiment (4.7 ★ across 15 reviews), 35% federal CMS Medicare Part B procedure volume (100th percentile in NC), and 20% bedside communication and credential longevity [1][2][3].

Unlike commercial physician directories where doctors can pay for "Featured" placement, every GreatDoc™ Score on dotMD is calculated directly from federal CMS utilization records (NPI #1528013885) and verified patient feedback.

Before Your Visit

Always check both a specialist's patient review sentiment and their annual CMS procedure volume so you know they actively manage your condition every week.

04

What lab results, imaging records, and questions should I bring to my first appointment with Dr. Marcu?

The Short Answer

Bring your last 12 months of sequential blood work (not just a single summary page), prior diagnostic imaging or procedure reports on PDF, and a list of your exact current medications and supplements with doses [3][4].

Because a new-patient Cardiology consultation (CPT 99204/99205) focuses on longitudinal trends rather than isolated snapshots, having 2–3 prior lab panels side-by-side prevents duplicate blood draws and allows Dr. Marcu to establish a treatment plan on Day 1.

Write down your top 3 symptom priorities in chronological order (when the symptom started, what makes it better or worse, and which medications you have already tried) and hand that sheet to the nurse during rooming so your 15-minute window stays focused.

Before Your Visit

Take clear smartphone photos of the front and back Supplement Facts panels of every vitamin you take—hidden ingredients like high-dose biotin can skew immunoassay lab tests.

05

How can I avoid overpaying at the pharmacy when Dr. Marcu prescribes a new medication?

The Short Answer

Before leaving the exam room at 115 Heart DR, ask Dr. Marcu whether a generic first-line option exists and check its federal CMS NADAC wholesale acquisition cost on dotMD [4].

Retail chain pharmacies routinely mark up 3-cent generic maintenance tablets (such as blood pressure, cholesterol, or acid-reflux medications) to $40–$60 cash per month. Asking Dr. Marcu to send 90-day generic maintenance prescriptions to transparent cost-plus pharmacies or checking your insurer's Tier 1 preferred list prevents pharmacy counter sticker shock [4].

Before Your Visit

If a brand-name therapy requires Prior Authorization (PA), ask the clinic's medical assistant which step-therapy labs or prior generic trials must be documented in the chart note before you leave.

06

Where is Dr. Marcu's office located in Greenville, and how should I plan arrival and follow-up?

The Short Answer

Dr. Marcu practices at 115 Heart DR, Greenville, NC 27834. Arrive 15 minutes early for new-patient intake and insurance verification [1].

Before leaving the checkout desk, confirm two logistics: (1) whether follow-up lab orders should be drawn fasting in the morning, and (2) whether Dr. Marcu reviews incoming lab results via the patient portal or requires a scheduled follow-up visit (CPT 99213/99214).

Before Your Visit

Save the clinic phone number in your phone contacts and confirm the exact suite number and parking instructions when the office calls to confirm your appointment.

Local Specialty Comparison • Greenville, NC

Compare Peer Cardiology Doctors in Greenville

All NC Cardiology Specialists →
Dr. Michael Smith, MD ★ 4.8 GreatDoc™
77th Greenville Volume Pct • 3,344 Medicare pts/yr
Dr. Assadollah Movahed, MD ★ 4.8 GreatDoc™
91th Greenville Volume Pct • 2,403 Medicare pts/yr
Dr. Anil George, MD ★ 4.5 GreatDoc™
73th Greenville Volume Pct • 2,377 Medicare pts/yr
Dr. Jayesh Patel, MD ★ 4.7 GreatDoc™
86th Greenville Volume Pct • 2,286 Medicare pts/yr
Dr. Christopher Karkut, MD ★ 4.6 GreatDoc™
83th Greenville Volume Pct • 2,169 Medicare pts/yr
Dr. Adam Clark, MD ★ 4.7 GreatDoc™
68th Greenville Volume Pct • 2,049 Medicare pts/yr
Verified Primary Registries • CMS NPPES, Medicare Part B & Clinical Guidelines

Federal Physician Records & Clinical Sources ([1]–[4])

Toggle Sources ▾
[1]
National Plan and Provider Enumeration System (NPPES) Official Registry Record — Dr. Constantin Marcu, MD (NPI #1528013885)
Centers for Medicare & Medicaid Services (CMS) NPPES (2026) • CMS-NPPES-1528013885

Verifies active Type 1 Individual NPI #1528013885, primary taxonomy (Cardiology), and practice location at 115 Heart DR, Greenville, NC 27834.

Verify Primary Record (CMS-NPPES-1528013885) ↗
[2]
Medicare Physician & Other Practitioners by Provider and Service Dataset (NC Cardiology Peer Cohort)
CMS Office of Enterprise Data and Analytics (OEDA) (2025) • CMS-PARTB-UTIL-NC

Primary federal claims ledger recording 3,319 annual Medicare beneficiaries and 60,526 billed HCPCS/CPT services (99.79th NC percentile).

Verify Primary Record (CMS-PARTB-UTIL-NC) ↗
[3]
Medicare Provider Enrollment, Chain, and Ownership System (PECOS) Assignment & Payer Verification
Centers for Medicare & Medicaid Services (CMS) (2026) • CMS-PECOS-ENROLL

Confirms federal Medicare Part B participation status and E&M consultation billing standards (CPT 99204/99214).

Verify Primary Record (CMS-PECOS-ENROLL) ↗
[4]
National Average Drug Acquisition Cost (NADAC) Pharmacy Invoice Comparison Registry
Centers for Medicare & Medicaid Services (CMS) (2026) • CMS-NADAC-2026

Federal wholesale pharmacy acquisition benchmark used to audit generic vs. brand prescription costs ordered during specialist consultations.

Verify Primary Record (CMS-NADAC-2026) ↗
For Physicians & Practice Managers • 100% Free NPI Verification

Are You Dr. Constantin Marcu, MD? Claim & Customize Your Profile

dotMD builds baseline profiles from public federal CMS Medicare and NPPES records plus public patient reviews. Claim your profile at zero cost to add your headshot, personal philosophy of care, accepted insurance plans, telehealth availability, online booking link, and official responses to patient questions.

Verify NPI #1528013885 to Unlock Profile Editing
The Human Side • Live Patient Reviews & Waiting-Room Forum

Have You Seen Dr. Marcu? Share Your Experience or Ask a Question

Share your real-world consultation experience, lobby wait time, bedside manner rating, or insurance/billing tips with other patients in Greenville, NC.

“People Like Me” Cohort Filter (Zero-PHI)

Filter Dr. Constantin Marcu community Q&As, structured “What Worked For Me” reports, and dosage logs by age, sex, and duration.

No threads match this cohort filter yet. Click + Share Question or “What Worked For Me” to start a conversation on Dr. Constantin Marcu.