Stephen Mezzafonte, M.D.
NPI 1649443649 · Interventional Cardiology Physician · Roslyn, NY
Enrolled with Medicare as Practitioner - Interventional Cardiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Mezzafonte, M.D. is a Interventional Cardiology Physician provider in Roslyn, NY (NPI 1649443649).
Provider details
- NPI number
- 1649443649
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 230538 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
7,357 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,807 | $150 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,343 | $19 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,056 | $90 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 792 | $17 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 785 | $231 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 93 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 1,153 | 341 |
| Atorvastatin Calcium | 929 | 275 |
| Rosuvastatin Calcium | 856 | 279 |
| Amlodipine Besylate | 565 | 175 |
| Apixabanbrand: Eliquis | 400 | 121 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 355 | 135 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$900 across 27 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-10
- Last updated
- 2010-04-13
Frequently asked questions
- What is Stephen Mezzafonte's NPI number?
- Stephen Mezzafonte's National Provider Identifier (NPI) is 1649443649, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Mezzafonte's specialty?
- Stephen Mezzafonte is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Mezzafonte located?
- Stephen Mezzafonte's practice location on file with NPPES is 100 Port Washington Blvd, Roslyn, NY 11576-1353.
- What is Stephen Mezzafonte's phone number?
- The practice phone number listed in the NPPES registry for Stephen Mezzafonte is (516) 390-9640.
- Does Stephen Mezzafonte accept Medicare?
- Stephen Mezzafonte is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Mezzafonte's NPI active?
- Yes — Stephen Mezzafonte's NPI (1649443649) is active in the NPPES registry as of the last update on 2010-04-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.