Margaux Elizabeth Hartmann, RRT

Primary specialty

Registered Respiratory TherapistTaxonomy code 227900000X

License

012470 Issued in NY

Practice address

554 Larkfield Rd
East Northport, NY 11731-4205

Phone

(631) 266-4501

NPI assigned

Oct 20, 2025

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1760918400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760918400000",
    "number": "1528935210",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "28 DUNE CT",
            "city": "NORTHPORT",
            "state": "NY",
            "postal_code": "117682126",
            "telephone_number": "631-766-8384"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "554 LARKFIELD RD",
            "city": "EAST NORTHPORT",
            "state": "NY",
            "postal_code": "117314205",
            "telephone_number": "631-266-4501"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARTMANN",
        "first_name": "MARGAUX",
        "middle_name": "ELIZABETH",
        "credential": "RRT",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-10-20",
        "last_updated": "2025-10-20",
        "certification_date": "2025-10-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "227900000X",
            "taxonomy_group": "",
            "desc": "Respiratory Therapist, Registered",
            "state": "NY",
            "license": "012470",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Abigail Guerrier
• Megan Guilfoyle, OTL, MS
• Kimberly Guillem, MSED
• Kristine Habel
• Mary Kate Hannigan
• Helping Hands Behavioral Services, LLC
• Helping Hands Consultation Services (Helping Hands Children Services)
• Helping Hands Licensed Behavior Analyst Services, PLLC
• Diane K Henry, LCSW-R
• Caelyn Herbert, DPT

• Registered Respiratory Therapist in East Northport, NY
• Providers in East Northport, NY by specialty
• Registered Respiratory Therapist in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.