NPIMap

Individual provider Active NPI

Aaron Si Arn Ranbaduge Leong

  • Endocrinology, Diabetes & Metabolism Physician
  • Boston, MA
National Provider Identifier
1770939381
Registry record updated Feb 10, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X
License
266689 Issued in MA
Practice address
55 Fruit St RM 940K
Boston, MA 02114-2621
Phone
(617) 724-3203
Fax
(617) 724-2718
NPI assigned
May 12, 2016
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 10, 2022

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 266689 MA
Student in an Organized Health Care Education/Training Program 390200000X
Endocrinology, Diabetes & Metabolism Physician 207RE0101X 266689 MA Primary

Addresses

Primary practice location

55 Fruit St RM 940K
Boston, MA 02114-2621

Mailing address

50 Staniford St
9TH Floor
Boston, MA 02114-2517
Phone (617) 724-3502

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20161004000614 MA Practitioner - EndocrinologyPractitioner - Internal Medicine 4587952791 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
EndocrinologyAlso: Internal Medicine
Education
Other, 2007
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
The General Hospital CorporationGroup PAC ID 6507803806, 1,275 clinicians

Practice addresses (Care Compare)

243 Charles St
Suite 1107
Boston, MA 02114-3002
Phone (617) 273-5699

50 Staniford St
Boston, MA 02114-2517

55 Fruit St
Boston, MA 02114-2621
Phone (617) 726-2000

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-0287

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Massachusetts General Physicians Organization Inc Internal Medicine CurrentSince Sep 1, 2016 Accepting new patients
General Hospital Corp Current Accepting new patients
The General Hospital Corporation CurrentSince Sep 1, 2016 Accepting new patients

Locations

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

55 Fruit St
Boston, MA 02114

55 Fruit St
Rm 940K
Boston, MA 02114
Phone (617) 724-3203

50 Staniford St
Fl 9
Boston, MA 02114
Phone (617) 724-6610

Interoperability endpoints

  • Direct secure messaging: leong.siarnaaron.mgh@direct.partners.masshiway.net

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 6

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": "1463011200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1644451200000",
    "number": "1770939381",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "50 STANIFORD ST",
            "address_2": "9TH FLOOR",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142517",
            "telephone_number": "617-724-3502"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST RM 940K",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621",
            "telephone_number": "617-724-3203",
            "fax_number": "617-724-2718"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEONG",
        "first_name": "AARON",
        "middle_name": "SI ARN RANBADUGE",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-05-12",
        "last_updated": "2022-02-10",
        "certification_date": "2021-12-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "266689",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "MA",
            "license": "266689",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.