Aaron Westreich, M.D.

Primary specialty

Allergy & Immunology PhysicianTaxonomy code 207K00000X

License

315428 Issued in NY

Practice address

70 E Sunrise Hwy Ste 411
Valley Stream, NY 11581-1233

Phone

(516) 355-0505

Fax

(516) 355-2055

NPI assigned

Apr 7, 2017

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Allergy/Immunology

Education

University of Maryland School of Medicine, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

ENT and Allergy Associates LLPGroup PAC ID 0749193662, 431 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

94.45 of 100Reported as group

Quality

89.91

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• Healthfirst Medicare Network H5989
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H3359

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
• Direct secure messaging: aaron.westreich@direct.entandallergy.nextgenshare.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• ENT and Allergy Associates LLP

  • Otolaryngology Physician
  • Tarrytown, NY
  • NPI 1376598326

  Allergy & Immunology

  Medicare reassignment Care Compare group NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1491523200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750636800000",
    "number": "1801329735",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "660 WHITE PLAINS RD STE 400",
            "city": "TARRYTOWN",
            "state": "NY",
            "postal_code": "105915107",
            "telephone_number": "914-984-2546"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "70 E SUNRISE HWY STE 411",
            "city": "VALLEY STREAM",
            "state": "NY",
            "postal_code": "115811233",
            "telephone_number": "516-355-0505",
            "fax_number": "516-355-2055"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WESTREICH",
        "first_name": "AARON",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-04-07",
        "last_updated": "2025-06-23",
        "certification_date": "2025-06-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207K00000X",
            "taxonomy_group": "",
            "desc": "Allergy & Immunology",
            "state": "NY",
            "license": "315428",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CO",
            "license": "DR.0063992",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Robin V Weissman, RD, MSW
• Wellness Adult Health NP PC
• Wen Drew Optical Corp
• West Lincoln Endoscopy PLLC
• West Nassau Dialysis Center, Inc
• John Warren Whalen, BA
• Audra Ursula White, LMSW
• Kendra Simone White, M.A.
• Shivaughn White
• Corresa E Whyte, RD

• Allergy & Immunology Physician in Valley Stream, NY
• Providers in Valley Stream, NY by specialty
• Allergy & Immunology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 23, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.