Individual provider Active NPI

Justin Oldfield, MD

  • Family Medicine Physician
  • New York, NY
National Provider Identifier
1457766438
Registry record updated Mar 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
287289 Issued in NY
Practice address
40 E 43Rd St FL 2
New York, NY 10017-3811
Phone
(888) 663-6331
Fax
(415) 252-7176
NPI assigned
Jun 27, 2014
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 15, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X 4301105653 MI
Family Medicine Physician 207Q00000X 287289 NY Primary

Addresses

Primary practice location

40 E 43Rd St FL 2
New York, NY 10017-3811

Mailing address

1 Embarcadero Ctr Ste 1900
San Francisco, CA 94111-3723
Phone (415) 658-6791

Other practice location 1

35 E 21st St Fl 7
New York, NY 10010-6212
Phone (212) 530-0659

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
I20170620001329 NY Practitioner - Family Practice 2567764947 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Tufts University School of Medicine, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
One Medical of Ny PCGroup PAC ID 3274713110, 72 clinicians

Practice addresses (Care Compare)

40 E 43Rd St
FL 2
New York, NY 10017-3811
Phone (888) 663-6331

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
4301105653MIMDStudent in an Organized Health Care Education/Training Program

Practice roles

OrganizationSpecialtyStatusNew patients
Montefiore Medical Center CurrentSince Jan 13, 2026 Accepting new patients
Icahn School of Medicine at Mount Sinai Current Accepting new patients
Montefiore Medical Center CurrentSince Jan 13, 2026 Accepting new patients

Locations

111 E 210th St
Bronx, NY 10467

40 E 43rd St
Fl 2
New York, NY 10017

40 E 43rd St
New York, NY 10017
Phone (212) 530-2288

919 3rd Ave
Ste 105
New York, NY 10022
Phone (212) 530-0650

17 E 102nd St
New York, NY 10029
Phone (212) 241-7968

Organizations & group practices 4

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.

NPI Registry JSON

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

{
    "created_epoch": "1403827200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741996800000",
    "number": "1457766438",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 EMBARCADERO CTR STE 1900",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941113723",
            "telephone_number": "415-658-6791"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "40 E 43RD ST FL 2",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100173811",
            "telephone_number": "888-663-6331",
            "fax_number": "415-252-7176"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "35 E 21st St Fl 7",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100106212",
            "country_code": "US",
            "telephone_number": "212-530-0659",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OLDFIELD",
        "first_name": "JUSTIN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-06-27",
        "last_updated": "2025-03-15",
        "certification_date": "2025-03-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "MI",
            "license": "4301105653",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "NY",
            "license": "287289",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.