Individual provider Active NPI

Marissa A Lazor, MD

  • Anesthesiology Physician
  • Westwood, MA
National Provider Identifier
1790760759
Registry record updated Jan 2, 2008
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
77421 Issued in MA
Practice address
690 Canton St
Suite 325
Westwood, MA 02090-2321
Phone
(781) 407-7713
Fax
(781) 407-0998
NPI assigned
Dec 13, 2005
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 2, 2008

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 77421 MA Primary

Addresses

Primary practice location

690 Canton St
Suite 325
Westwood, MA 02090-2321

Mailing address

690 Canton St
Suite 325
Westwood, MA 02090-2321
Phone (781) 407-7713

Other identifiers 1

IdentifierTypeStateIssuer
3126641MedicaidMA

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
I20070115000219 MA Practitioner - Anesthesiology 8123028206 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Northwestern University Feinberg Medical School, 1988
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Associated Physicians of Harvard Medical Faculty Physicians at Beth IsGroup PAC ID 6305749987, shared by 7 NPIs, 566 clinicians
Excel Anesthesia Associates PLLCGroup PAC ID 0042675282, 29 clinicians

Practice addresses (Care Compare)

125 Parker Hill Ave
Boston, MA 02120-2847
Phone (781) 453-7300

40 Allied Dr
Dedham, MA 02026-6146
Phone (617) 865-1110

Hospital & facility affiliations

  • New England Baptist Hospital Hospital, Boston, MA, CCN 220088

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
77421MAMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Aug 1, 2025 Accepting new patients
Associated Physicians of Harvard Medical Faculty Physicians at Beth Is CurrentSince May 28, 2019 Accepting new patients
Associated Physicians of Harvard Medical Faculty Physicians at Beth Is CurrentSince Sep 1, 2025 Accepting new patients
Excel Anesthesia Associates PLLC Anesthesiology CurrentSince Nov 29, 2023 Accepting new patients
Associated Physicians of Harvard Medical Faculty Physicians at Beth Is Anesthesiology CurrentSince May 28, 2019 Accepting new patients
Associated Physicians of Harvard Medical Faculty Physicians at Beth Is Current Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Aug 1, 2025 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Past Accepting new patients

Locations

1 Deaconess Rd
#4
Boston, MA 02215
Phone (617) 632-7000

330 Brookline Ave
Boston, MA 02215
Phone (617) 667-2000

1493 Cambridge St
Cambridge, MA 02139
Phone (617) 665-1185

40 Allied Dr
Dedham, MA 02026
Phone (617) 264-1100

101 Page St
New Bedford, MA 02740
Phone (508) 961-5425

25 Highland Ave
Newburyport, MA 01950
Phone (978) 258-4734

125 Parker Hill Ave
Roxbury Xing, MA 02120
Phone (617) 264-1100

Interoperability endpoints

  • Direct secure messaging: mlazor254455@direct.bilh.masshiway.net

Organizations & group practices 8

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 1

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

NPI Registry JSON

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

{
    "created_epoch": "1134432000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1199232000000",
    "number": "1790760759",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "690 CANTON ST",
            "address_2": "SUITE 325",
            "city": "WESTWOOD",
            "state": "MA",
            "postal_code": "020902321",
            "telephone_number": "781-407-7713",
            "fax_number": "781-407-0998"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "690 CANTON ST",
            "address_2": "SUITE 325",
            "city": "WESTWOOD",
            "state": "MA",
            "postal_code": "020902321",
            "telephone_number": "781-407-7713",
            "fax_number": "781-407-0998"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LAZOR",
        "first_name": "MARISSA",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-12-13",
        "last_updated": "2008-01-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MA",
            "license": "77421",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3126641",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Westwood, MA

Sources for this page

Verify at the official NPI Registry.