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Emergency Medicine

Alyssa Johnson, MD

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

Summary

Alyssa Johnson, MD (Emergency Medicine) is listed by Medicare at 1 hospital in New Hyde Park, NY. NPI 1720510274. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Alyssa Johnson, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
9Years since medical school (graduated 2017)
Emory University School Of MedicineMedical school
FemaleGender (as listed)
North Shore-Lij Medical PCGroup practice

Quick answers

Which hospitals does Alyssa Johnson work at?
Medicare's official clinician data lists Alyssa Johnson at 1 hospital: Long Island Jewish Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Alyssa Johnson see patients?
Medicare's clinician data lists 2 practice locations, including Forest Hills, NY and Syosset, NY. Call before your visit to confirm the address.
What is Alyssa Johnson's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Alyssa Johnson accept Medicare assignment?
Yes. Medicare's clinician data says Alyssa Johnson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Alyssa Johnson?
(718) 830-4000, as listed in official Medicare / NPI Registry data.
What is Alyssa Johnson's NPI number?
1720510274. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Alyssa Johnson works

Medicare's Facility Affiliation Data lists Alyssa Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Alyssa Johnson is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Alyssa Johnson as a member of this group (CMS data updated 2026-10-02).

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

Specialties

Find other Emergency Medicine doctors in New York →

Other emergency medicine doctors in Forest Hills

Clinicians with the same Medicare primary specialty in Forest Hills, NY — not a recommendation.

All emergency medicine doctors in Forest Hills →

Clinician information

CredentialMD
Medical schoolEmory University School Of Medicine
Graduation year2017
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1720510274
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians