Individual provider Active NPI

Megan Theresa Keenan, M.D.

  • Pediatrics Physician
  • Boston, MA
National Provider Identifier
1558649145
Registry record updated Sep 3, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatrics PhysicianTaxonomy code 208000000X
License
272474 Issued in NY
Practice address
55 Fruit St
Boston, MA 02114-2696
Phone
(617) 724-9040
NPI assigned
Jul 29, 2011
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 3, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X 290231 MA
Pediatrics Physician 208000000X 272474 NY Primary

Addresses

Primary practice location

55 Fruit St
Boston, MA 02114-2696

Mailing address

1301 57TH St
Brooklyn, NY 11219-4636
Phone (718) 283-3640

Other practice location 1

229 E Main St
Milford, MA 01757-2832
Phone (508) 634-7333

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
I20230323002614 MA Practitioner - Pediatric Medicine 1153616370 Reassigns benefits to 3 organizations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
The General Hospital Corporation CurrentSince Dec 20, 2022 Accepting new patients
General Hospital Corp Current Accepting new patients
Umass Memorial Medical Group, Inc. CurrentSince Oct 1, 2025 Accepting new patients
Massachusetts General Physicians Organization Inc Pediatrics CurrentSince Dec 20, 2022 Accepting new patients
Maimonides Medical Center Current Accepting new patients
Umass Memorial Medical Group Inc Pediatrics Current Accepting new patients

Locations

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

55 Fruit St
Boston, MA 02114

229 E Main St
Milford, MA 01757
Phone (508) 381-5103

229 E Main St
Ste 203
Milford, MA 01757
Phone (508) 473-7221

55 Lake Ave N
Worcester, MA 01655
Phone 508334100048862

4802 10th Ave
Brooklyn, NY 11219
Phone (718) 283-8724

Interoperability endpoints

  • Direct secure messaging: keenan.megan.mgh@direct.partners.masshiway.net
  • Direct secure messaging: megankeenan@mai.allscriptsdirect.net

Organizations & group practices 6

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.

NPI Registry JSON

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

{
    "created_epoch": "1311897600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756857600000",
    "number": "1558649145",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1301 57TH ST",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112194636",
            "telephone_number": "718-283-3640",
            "fax_number": "718-283-3602"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142696",
            "telephone_number": "617-724-9040"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "229 E Main St",
            "address_purpose": "LOCATION",
            "city": "Milford",
            "state": "MA",
            "postal_code": "017572832",
            "country_code": "US",
            "telephone_number": "508-634-7333",
            "fax_number": "508-482-5436",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KEENAN",
        "first_name": "MEGAN",
        "middle_name": "THERESA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2011-07-29",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "290231",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NY",
            "license": "272474",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.