Individual provider Active NPI

Margaret Anne Komoniewski, OD

  • Optometrist
  • Cambridge, MA
National Provider Identifier
1669365607
Registry record updated Dec 3, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
OptometristTaxonomy code 152W00000X
License
0618003501 Issued in VA
Practice address
19 Dunster St
Cambridge, MA 02138-5002
Phone
(617) 354-5590
NPI assigned
May 29, 2025
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 3, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Optometrist 152W00000X 0618003501 VA Primary

Addresses

Primary practice location

19 Dunster St
Cambridge, MA 02138-5002

Mailing address

15 Belmont St
Cambridge, MA 02138-4404
Phone (617) 354-5100

Other practice location 1

198 Elm St
North Cambridge, MA 02140-1303
Phone (617) 798-7670

Other practice location 2

26 Surveyors Lane
Martha's Vineyard, MA 61746-8174
Phone (617) 275-7820

Other practice location 3

15 Belmont St
Cambridge, MA 02138-4404
Phone (617) 354-5100

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
0618003501VAMDOptometrist

Practice roles

OrganizationSpecialtyStatusNew patients
Harvard Square Eye Care P.C. Optometrist CurrentSince Jun 3, 2025 Accepting new patients

Locations

19 Dunster St
Cambridge, MA 02138
Phone (617) 312-0272

15 Belmont St
Cambridge, MA 02138
Phone (617) 354-5100

198 Elm St
North Cambridge, MA 02140
Phone (617) 628-6800

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.

NPI Registry JSON

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

{
    "created_epoch": "1748476800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764720000000",
    "number": "1669365607",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15 BELMONT ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021384404",
            "telephone_number": "617-354-5100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19 DUNSTER ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021385002",
            "telephone_number": "617-354-5590"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "198 Elm St",
            "address_purpose": "LOCATION",
            "city": "North Cambridge",
            "state": "MA",
            "postal_code": "021401303",
            "country_code": "US",
            "telephone_number": "617-798-7670",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "26 Surveyors Lane",
            "address_purpose": "LOCATION",
            "city": "Martha's Vineyard",
            "state": "MA",
            "postal_code": "617468174",
            "country_code": "US",
            "telephone_number": "617-275-7820",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "15 Belmont St",
            "address_purpose": "LOCATION",
            "city": "Cambridge",
            "state": "MA",
            "postal_code": "021384404",
            "country_code": "US",
            "telephone_number": "617-354-5100",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KOMONIEWSKI",
        "first_name": "MARGARET",
        "middle_name": "ANNE",
        "credential": "OD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-05-29",
        "last_updated": "2025-12-03",
        "certification_date": "2025-12-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "VA",
            "license": "0618003501",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Cambridge, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 3, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.