NPI Lookup · Medicare billing profile

Louis Avvento, MD

Hematology & Oncology Physician · Southampton, NY · NPI 1417999533. Below: what a registry shows, plus the 2024 Medicare billing context no registry clone carries.

$2.6M
Est. Medicare paid, 2024
209,230
Services billed, 2024
109
Distinct codes billed, 2024
2024
Latest CMS data year

Registry record (NPPES)

NPI1417999533
TypeIndividual clinician
SpecialtyHematology & Oncology Physician
Practice address640 County Road 39
City / State / ZIPSouthampton, NY 11968

Top billed codes (2024)

J1439Injection, ferric carboxymaltose, 1 mg84,000 · $73K
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)30,400 · $70K
J9271Injection, pembrolizumab, 1 mg16,800 · $754K
J0897Injection, denosumab, 1 mg9,900 · $204K
J1756Injection, iron sucrose, 1 mg6,400 · $1K

Top 5 of 109 codes billed in 2024. Services · est. Medicare paid. The full list is one search in the app.

Reported industry relationships (2024)

Manufacturers with disclosed Open Payments records naming this provider in 2024: AstraZeneca Pharmaceuticals LP · CSL Behring.

A payment record is a disclosed relationship under the Sunshine Act, not evidence this provider uses a product. Detail is in the app.

Part D prescribing (2024)

Darbepoetin Alfa In Polysorbat297 claims
Apixaban200 claims
Letrozole129 claims
Fosnetupitant/Palonosetron101 claims
Prednisone75 claims

Top 5 drugs by Medicare Part D claim count. Drug-year lines under 11 claims are suppressed by CMS, so this understates low-volume prescribing.

This is the public slice. Year-over-year history, every code, payment detail, group affiliations, and phone numbers for Louis Avvento are one search in Prospect 811.

Where this data comes from. Provider identity, specialty, and practice location come from CMS's public NPPES registry (the National Plan & Provider Enumeration System), the official record of every NPI ever issued. Deactivated NPIs are excluded. Addresses are what the provider filed and can lag a move. Where a profile shows Medicare context, it comes from CMS's public utilization, Part D, and Open Payments files: traditional Medicare fee-for-service only, and CMS suppresses any provider-and-code line under 11 beneficiaries before publishing. An Open Payments record is a disclosed relationship, not evidence a clinician uses a product. Prospect 811 organizes public data; it doesn't add to or alter it. Not affiliated with or endorsed by CMS. Full detail on the data page.

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