Individual provider Active NPI

Mercy O Toma

  • Pediatrics Physician
  • Boston, MA
National Provider Identifier
1275116642
Registry record updated Apr 22, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatrics PhysicianTaxonomy code 208000000X
License
1020009 Issued in MA
Practice address
300 Longwood Ave
Boston, MA 02115-5724
Phone
(617) 355-6000
NPI assigned
May 3, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 22, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X 1020009 MA Primary

Addresses

Primary practice location

300 Longwood Ave
Boston, MA 02115-5724

Mailing address

300 Longwood Ave
Boston, MA 02115-5724
Phone (617) 355-6000

Other practice location 1

9 Hope Ave
Waltham, MA 02453-2741
Phone (781) 216-2100

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
I20260508003236 MA Practitioner - Pediatric Medicine 3274001185

Care Compare profile

Medicare Care Compare
Specialty
Pediatric Medicine
Education
Other, 2021
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

300 Longwood Ave
Boston, MA 02115-5737

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
1020009MAMDPediatrics Physician

Interoperability endpoints

  • Direct secure messaging: mtoma76246@direct.bostonchildrens.org

NPI Registry JSON

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

{
    "created_epoch": "1620000000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776816000000",
    "number": "1275116642",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-355-6000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-355-6000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "9 Hope Ave",
            "address_purpose": "LOCATION",
            "city": "Waltham",
            "state": "MA",
            "postal_code": "024532741",
            "country_code": "US",
            "telephone_number": "781-216-2100",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TOMA",
        "first_name": "MERCY",
        "middle_name": "O",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-05-03",
        "last_updated": "2026-04-22",
        "certification_date": "2026-04-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "1020009",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.