Individual provider Active NPI

Virginia Marie Zaleskas, M.D.

  • Hematology & Oncology Physician
  • Boston, MA
National Provider Identifier
1538130133
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
204551 Issued in MA
Practice address
750 Washington St
Box 245
Boston, MA 02111-1526
Phone
(617) 636-1108
Fax
(617) 636-6004
NPI assigned
Jan 31, 2006
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X 204551 MA Primary

Addresses

Primary practice location

750 Washington St
Box 245
Boston, MA 02111-1526

Mailing address

254 Bowen St
Apt 1
South Boston, MA 02127-2646
Phone (617) 269-9134

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)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
204551MAMDHematology & Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Emerson Hospital Past Accepting new patients

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

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

{
    "created_epoch": "1138665600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1538130133",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "254 BOWEN ST",
            "address_2": "APT 1",
            "city": "SOUTH BOSTON",
            "state": "MA",
            "postal_code": "021272646",
            "telephone_number": "617-269-9134"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "750 WASHINGTON ST",
            "address_2": "BOX 245",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021111526",
            "telephone_number": "617-636-1108",
            "fax_number": "617-636-6004"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZALESKAS",
        "first_name": "VIRGINIA",
        "middle_name": "MARIE",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-01-31",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "MA",
            "license": "204551",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.