Individual provider Active NPI

Ellen Axenfeld, MD

  • Gastroenterology Physician
  • White Plains, NY
National Provider Identifier
1821594441
Registry record updated Sep 26, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
310319 Issued in NY
Practice address
1111 Westchester Ave
White Plains, NY 10604-3525
Phone
(914) 327-2700
NPI assigned
Apr 3, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 26, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X 310319 NY Primary

Addresses

Primary practice location

1111 Westchester Ave
White Plains, NY 10604-3525

Mailing address

1111 Westchester Ave
White Plains, NY 10604-3525
Phone (914) 327-2700

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20251002004117 NY Practitioner - Gastroenterology 8820511876 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Trustees of Columbia University in the City of New YorkGroup PAC ID 8527972546, 2,262 clinicians

Practice addresses (Care Compare)

1111 Westchester Ave
West Harrison, NY 10604-3525
Phone (914) 327-2700

161 Fort Washington Ave
New York, NY 10032-3729
Phone (212) 305-8559

5141 Broadway
New York, NY 10034-1159
Phone (212) 932-5218

622 W 168TH St
New York, NY 10032-3720

Hospital & facility affiliations

  • New York-Presbyterian Hospital Hospital, New York, NY, CCN 330101

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10
Upper gastrointestinal (GI) endoscopy for acid reflux1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
310319NYMDGastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Trustees of Columbia University in the City of New York Current Accepting new patients
Trustees of Columbia University in the City of New York CurrentSince Jul 31, 2025 Accepting new patients
Trustees of Columbia University in the Department of Otolaryngology Past Accepting new patients

Locations

622 W 168th St
New York, NY 10032
Phone (212) 305-4931

161 Fort Washington Ave
New York, NY 10032
Phone (212) 305-8559

177 Fort Washington Ave
Ofc
New York, NY 10032
Phone (212) 305-3038

1111 Westchester Ave
White Plains, NY 10604
Phone (212) 305-1021

Networks

  • Healthfirst Medicare Network H3359
  • Healthfirst Medicare Network H9678
  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H1722

Interoperability endpoints

  • Direct secure messaging: eaxenfeld1618948@nychhc.direct-ci.com
  • FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/
  • FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/

Organizations & group practices 3

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.

Hospital & facility affiliations 5

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1522713600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758844800000",
    "number": "1821594441",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1111 WESTCHESTER AVE",
            "city": "WHITE PLAINS",
            "state": "NY",
            "postal_code": "106043525",
            "telephone_number": "914-327-2700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1111 WESTCHESTER AVE",
            "city": "WHITE PLAINS",
            "state": "NY",
            "postal_code": "106043525",
            "telephone_number": "914-327-2700"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AXENFELD",
        "first_name": "ELLEN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-04-03",
        "last_updated": "2025-09-26",
        "certification_date": "2025-09-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "NY",
            "license": "310319",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in White Plains, NY

Sources for this page

Verify at the official NPI Registry.