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Hospitalist

Amy L. Mastrangelo, MD

Works at hospitals in New Hyde Park, NY · New York

Summary

Dr. Amy L. Mastrangelo, MD is a hospitalist at 27005 76th Ave, Suite 222, New Hyde Park, NY 11040. Phone: (718) 470-7260. Accepts Medicare assignment. In 2024, Amy L. Mastrangelo had 106 Original Medicare patients and 467 services. NPI 1184694937. 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: Hospitalist
  • Address: 27005 76th Ave, Suite 222, New Hyde Park, NY 11040 · Directions
  • Phone: (718) 470‑7260
  • Medicare: Accepts Medicare assignment
  • Hospital: Long Island Jewish Medical Center
  • Group practice: North Shore-Lij Medical PC
  • Medical school: University Of Rochester School Of Medicine And Dentistry · graduated 1998 (28 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Amy L. Mastrangelo, 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 Amy L. Mastrangelo accept Medicare assignment?
Yes. Medicare's clinician data says Amy L. Mastrangelo 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 Amy L. Mastrangelo see?
In 2024, CMS data shows 106 Original Medicare patients and 467 services for Amy L. Mastrangelo. This counts Original Medicare only and measures volume, not quality.
What is Amy L. Mastrangelo's NPI number?
1184694937. 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 Amy L. Mastrangelo, 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 patients106
Services billed to Medicare467
Different services or procedures7
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)209 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)104 services
  3. Hospital discharge day management, more than 30 minutes (99239)29 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)16 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%
  • Anxiety59%
  • Diabetes53%
  • Alzheimer's disease or dementia52%
  • Arthritis50%

Hospitals where Amy L. Mastrangelo works

Medicare's Facility Affiliation Data lists Amy L. Mastrangelo 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 Amy L. Mastrangelo is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Amy L. Mastrangelo 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 Hospitalist doctors in New York →

Other hospitalists in New Hyde Park

Clinicians with the same Medicare primary specialty in New Hyde Park, NY — not a recommendation.

All hospitalists in New Hyde Park →

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 schoolUniversity Of Rochester School Of Medicine And Dentistry
Graduation year1998 (28 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1184694937
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