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Emergency Medicine

Anthony L. Vassallo, MD

Works at hospitals in Staten Island, NY · New York

Summary

Dr. Anthony L. Vassallo, MD is an emergency medicine doctor at 475 Seaview Ave, Staten Island, NY 10305. Phone: (212) 434-6980. Accepts Medicare assignment. In 2024, Anthony L. Vassallo had 428 Original Medicare patients and 464 services. NPI 1427258326. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 475 Seaview Ave, Staten Island, NY 10305 · Directions
  • Phone: (212) 434‑6980
  • Medicare: Accepts Medicare assignment
  • Hospital: Staten Island University Hospital
  • Group practice: North Shore-Lij Medical PC
  • Medical school: Rutgers New Jersey Medical School · graduated 2003 (23 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Anthony L. Vassallo, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Anthony L. Vassallo accept Medicare assignment?
Yes. Medicare's clinician data says Anthony L. Vassallo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Anthony L. Vassallo see?
In 2024, CMS data shows 428 Original Medicare patients and 464 services for Anthony L. Vassallo. This counts Original Medicare only and measures volume, not quality.
What is Anthony L. Vassallo's NPI number?
1427258326. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Anthony L. Vassallo, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients428
Services billed to Medicare464
Different services or procedures19
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)265 services
  2. Emergency department visit with moderate level of medical decision making (99284)117 services
  3. Emergency department visit with low level of medical decision making (99283)48 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis62%
  • Diabetes58%
  • Ischemic heart disease49%
  • Anxiety38%

Hospitals where Anthony L. Vassallo works

Medicare's Facility Affiliation Data lists Anthony L. Vassallo at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Anthony L. Vassallo is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Anthony L. Vassallo as a member of this group (CMS data updated October 2, 2026).

  • North Shore-Lij Medical PC6,440 clinicians in the group

Specialties

Find other Emergency Medicine doctors in New York →

Other emergency medicine doctors in Staten Island

Clinicians with the same Medicare primary specialty in Staten Island, NY — not a recommendation.

All emergency medicine doctors in Staten Island →

Other clinicians in North Shore-Lij Medical PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolRutgers New Jersey Medical School
Graduation year2003 (23 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1427258326
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians