NPIMap

Individual provider Active NPI

May Riad, MD

  • Internal Medicine Physician
  • Watertown, MA
National Provider Identifier
1710355706
Registry record updated Jun 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
277268 Issued in MA
Practice address
1 Mount Auburn St
Watertown, MA 02472-3923
Phone
(781) 653-0100
NPI assigned
Sep 8, 2015
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 15, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Obesity Medicine (Preventive Medicine) Physician 2083B0002X 277268 MA
Internal Medicine Physician 207R00000X 277268 MA Primary

Addresses

Primary practice location

1 Mount Auburn St
Watertown, MA 02472-3923

Mailing address

632 Blue Hill Ave
Dorchester, MA 02121-3213
Phone (617) 822-3400

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
I20250116002685 MA Practitioner - Internal Medicine 7810207156 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

11 Mount Auburn St
Watertown, MA 02472-3981
Phone (877) 937-8128

500 Merrimack St
Lawrence, MA 01843-1981
Phone (978) 557-8900

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
277268MAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mass General Brigham Community Physicians Inc CurrentSince Feb 5, 2025 Accepting new patients
Mass General Brigham Community Physicians Inc. Internal Medicine Current Accepting new patients
Mass General Brigham Community Physicians Inc. Internal Medicine CurrentSince Feb 5, 2025 Accepting new patients
Mass General Brigham Medical Group, Inc. Internal Medicine Current Accepting new patients

Locations

500 Merrimack St
Lawrence, MA 01843
Phone (978) 557-8800

Interoperability endpoints

  • Direct secure messaging: riad.may.mgbicare@direct.partners.masshiway.net

Organizations & group practices 4

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 13

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 13

NPI Registry JSON

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

{
    "created_epoch": "1441670400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781481600000",
    "number": "1710355706",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "632 BLUE HILL AVE",
            "city": "DORCHESTER",
            "state": "MA",
            "postal_code": "021213213",
            "telephone_number": "617-822-3400"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MOUNT AUBURN ST",
            "city": "WATERTOWN",
            "state": "MA",
            "postal_code": "024723923",
            "telephone_number": "781-653-0100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RIAD",
        "first_name": "MAY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2015-09-08",
        "last_updated": "2026-06-15",
        "certification_date": "2026-06-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2083B0002X",
            "taxonomy_group": "",
            "desc": "Preventive Medicine, Obesity Medicine",
            "state": "MA",
            "license": "277268",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "277268",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Watertown, MA

Sources for this page

Verify at the official NPI Registry.