NPIMap

Individual provider Active NPI

Arjun Balakumar, MD

  • Emergency Medicine Physician
  • Boston, MA
National Provider Identifier
1619504115
Registry record updated May 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
1018138 Issued in MA
Practice address
75 Francis St
Boston, MA 02115-6110
Phone
(617) 732-5500
NPI assigned
Mar 25, 2020
Last updated
May 7, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 7, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X NU
Emergency Medicine Physician 207P00000X M-2368 GU
Emergency Medicine Physician 207P00000X 1018138 MA Primary

Addresses

Primary practice location

75 Francis St
Boston, MA 02115-6110

Mailing address

775 Beacon St Apt 305
Boston, MA 02215-3210
Phone (516) 643-0535

Other practice location 1

101 Nicolls Rd
Stony Brook, NY 11794-0001
Phone (631) 444-3880

Other practice location 2

55 Fruit St
Boston, MA 02114-2621
Phone (617) 724-4133

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in GU, MA, NY3 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20231012003226 GU Practitioner - Emergency Medicine 5294180105 Reassigns benefits to 2 organizations
I20240724003054 MA Practitioner - Emergency Medicine 5294180105 Reassigns benefits to 5 organizations
I20251104000474 NY Practitioner - Emergency Medicine 5294180105 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Other, 2023
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Nantucket Cottage HospitalGroup PAC ID 1759357601, 91 clinicians

Practice addresses (Care Compare)

57 Prospect St
Nantucket, MA 02554-2799
Phone (508) 825-8100

75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
M-2368GUMDEmergency Medicine Physician
1018138MAMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
The General Hospital Corporation CurrentSince Aug 1, 2024 Accepting new patients
Brigham & Womens Physicians Organization Inc Emergency Medicine CurrentSince Aug 1, 2024 Accepting new patients
Guam Healthcare Development Incorporated CurrentSince Nov 29, 2023 Accepting new patients
Guam Memorial Hospital CurrentSince Aug 20, 2023 Accepting new patients
Nantucket Cottage Hospital CurrentSince May 18, 2025 Accepting new patients
Dobbs Ferry Emergency Medicine, PC Emergency Medicine CurrentSince Aug 28, 2025 Accepting new patients
Nantucket Cottage Hospital CurrentSince May 18, 2025 Accepting new patients
General Hospital Corp Current Accepting new patients
Nantucket Physicians Organization CurrentSince May 18, 2025 Accepting new patients
Massachusetts General Physicians Organization Inc Emergency Medicine CurrentSince Aug 1, 2024 Accepting new patients
Guam Memorial Hospital CurrentSince Aug 20, 2023 Accepting new patients

Locations

133 Route 3
Dededo, GU 96929
Phone (671) 645-5500

850 Gov Carlos G Camacho Rd
#R
Tamuning, GU 96913
Phone (671) 647-2552

55 Fruit St
Boston, MA 02114

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

75 Francis St
Boston, MA 02115

62 13th St
Charlestown, MA 02129
Phone (617) 724-4260

57 Prospect St
Nantucket, MA 02554
Phone (508) 228-1200

128 Ashford Ave
Dobbs Ferry, NY 10522
Phone (914) 245-8936

967 N Broadway
Yonkers, NY 10701
Phone (914) 798-8956

Interoperability endpoints

  • Direct secure messaging: balakumar.arjun.mgh@direct.partners.masshiway.net

Organizations & group practices 11

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

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": "1585094400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746576000000",
    "number": "1619504115",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "775 BEACON ST APT 305",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022153210",
            "telephone_number": "516-643-0535"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156110",
            "telephone_number": "617-732-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "101 Nicolls Rd",
            "address_purpose": "LOCATION",
            "city": "Stony Brook",
            "state": "NY",
            "postal_code": "117940001",
            "country_code": "US",
            "telephone_number": "631-444-3880",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "55 Fruit St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142621",
            "country_code": "US",
            "telephone_number": "617-724-4133",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BALAKUMAR",
        "first_name": "ARJUN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-25",
        "last_updated": "2025-05-07",
        "certification_date": "2025-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "GU",
            "license": "M-2368",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MA",
            "license": "1018138",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.