Individual provider Active NPI

James O'Brien, NP

  • Nurse Practitioner
  • Boston, MA
National Provider Identifier
1558101964
Registry record updated Sep 9, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
RN2380433 Issued in MA
Practice address
18 Newbury St FL 5
Boston, MA 02116-3246
Phone
(617) 304-1965
NPI assigned
May 31, 2024
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 9, 2024

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X F354034-01 NY
Nurse Practitioner 363L00000X RN2380433 MA Primary

Addresses

Primary practice location

18 Newbury St FL 5
Boston, MA 02116-3246

Mailing address

52 Pitney Ave
Spring Lake, NJ 07762-1751
Phone (973) 723-3347

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: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250306001361 NY Practitioner - Nurse Practitioner 1254852239 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
RN2380433MAMDNurse Practitioner
F354034-01NYMDNurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Mskcc Surgery Group CurrentSince Feb 10, 2025 Accepting new patients
Bobby Buka, M.D., P.C. PastSince Feb 23, 2026 Accepting new patients

Locations

633 3rd Ave
Fl 4
New York, NY 10017
Phone (646) 227-3764

1275 York Ave
New York, NY 10065
Phone (212) 639-3813

Networks

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

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/BFCDAA

Organizations & group practices 2

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": "1717113600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1725840000000",
    "number": "1558101964",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "52 PITNEY AVE",
            "city": "SPRING LAKE",
            "state": "NJ",
            "postal_code": "077621751",
            "telephone_number": "973-723-3347"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18 NEWBURY ST FL 5",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021163246",
            "telephone_number": "617-304-1965"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "JAMES",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-05-31",
        "last_updated": "2024-09-09",
        "certification_date": "2024-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "NY",
            "license": "F354034-01",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "MA",
            "license": "RN2380433",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.