Individual provider Active NPI

Ashima Chadha, MD

  • Nephrology Physician
  • Boston, MA
National Provider Identifier
1013595461
Registry record updated Apr 2, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
3015630 Issued in MA
Practice address
165 Cambridge St
Boston, MA 02114-2783
Phone
(617) 724-4100
NPI assigned
Mar 29, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 2, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 3015630 MA
Nephrology Physician 207RN0300X 3015630 MA Primary

Addresses

Primary practice location

165 Cambridge St
Boston, MA 02114-2783

Mailing address

45 Francis St, MRB4
Boston, MA 02115
Phone (617) 732-5802

Other practice location 1

101 Merrimac St Fl 1
Boston, MA 02114-4724
Phone (617) 726-4132

Other practice location 2

75 Francis St
Boston, MA 02115-6106
Phone (617) 732-5500

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
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
I20260625000497 MA Practitioner - NephrologyPractitioner - Internal Medicine 0941773535

Care Compare profile

Medicare Care Compare
Specialty
NephrologyAlso: Internal Medicine
Education
Other, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Massachusetts General Physicians Organization IncGroup PAC ID 2466365820, shared by 4 NPIs, 3,494 clinicians

Practice addresses (Care Compare)

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

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

Hospital & facility affiliations

  • Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
  • Massachusetts General Hospital Hospital, Boston, MA, CCN 220071

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
3015630MAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
John L. Niles MD, PLLC CurrentSince Jul 1, 2026 Accepting new patients

Locations

101 Merrimac St
Fl 1
Boston, MA 02114
Phone (617) 726-4132

Organizations & group practices 1

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 2

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": "1616976000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775088000000",
    "number": "1013595461",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "45 FRANCIS ST, MRB4",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-732-5802"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "165 CAMBRIDGE ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142783",
            "telephone_number": "617-724-4100"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "101 Merrimac St Fl 1",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021144724",
            "country_code": "US",
            "telephone_number": "617-726-4132",
            "fax_number": "617-726-4213",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "75 Francis St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021156106",
            "country_code": "US",
            "telephone_number": "617-732-5500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHADHA",
        "first_name": "ASHIMA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-03-29",
        "last_updated": "2026-04-02",
        "certification_date": "2026-04-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "3015630",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "MA",
            "license": "3015630",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.