NPIMap

Individual provider Active NPI

Alireza Toossi, MD

  • Internal Medicine Physician
  • Boston, MA
National Provider Identifier
1780871970
Registry record updated Aug 12, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
234084 Issued in MA
Practice address
22 Liberty Dr
Suite 6F
Boston, MA 02210
Phone
(617) 244-1669
Fax
(617) 244-6769
NPI assigned
Oct 1, 2007
Last updated
Aug 12, 2025By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 12, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 37478 AZ
Internal Medicine Physician 207R00000X 234084 MA Primary

Addresses

Primary practice location

22 Liberty Dr
Suite 6F
Boston, MA 02210

Mailing address

22 Liberty Dr 6F
Suite 6F
Boston, MA 02210
Phone (617) 244-1669

Other practice location 1

110 Liberty St
Brockton, MA 02301-5674
Phone (508) 941-7000

Other identifiers 2

IdentifierTypeStateIssuer
272389-01MedicaidAZ
110081675AMedicaidMA

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
I20081017000329 MA Practitioner - Internal Medicine 4688764541 Reassigns benefits to 6 organizations
Practice locations: Abington, MA; Boston, MA

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Signature Healthcare Medical Group IncGroup PAC ID 7719876267, 250 clinicians

Practice addresses (Care Compare)

110 Liberty St
Brockton, MA 02301-5521
Phone (508) 894-0400

425 River St
Mattapan, MA 02126-2210
Phone (617) 296-5585

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
37478AZMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Massachusetts Acute Care Specialists PC Internal Medicine CurrentSince Jul 1, 2017 Accepting new patients
Vantage Healthcare LLC Internal Medicine CurrentSince Jan 1, 2020 Accepting new patients
Signature Healthcare Medical Group Inc Internal Medicine CurrentSince Jul 19, 2025 Accepting new patients
Ipc Hospitalists of New England, P.C. Internal Medicine CurrentSince Jul 23, 2009 Accepting new patients
Ipc Hospitalists of New England PC Internal Medicine CurrentSince Jul 23, 2009 Accepting new patients
Toossi Inc CurrentSince Apr 9, 2022 Accepting new patients
Alignmed Partners, PC CurrentSince Jan 1, 2018 Accepting new patients
RC Taunton LLC Past Accepting new patients
Long Term Centers of Wrentham, Inc Past Accepting new patients
Franklin Opco, LLC Past Accepting new patients
Raynham Medical Investors LLC Past Accepting new patients
Medway Country Manor, Inc. Past Accepting new patients
St. Joseph Manor Health Care, Inc. Past Accepting new patients
West Bridgewater Medical Investors, LLC Past Accepting new patients
Brockton Rehabilitation and Nursing Center LLC Past Accepting new patients
Geriatric Authority of Milford Past Accepting new patients
Mikael Medical Associates Inc. Internal Medicine PastSince Feb 19, 2023 Accepting new patients
Adviniacare Abington LLC Past Accepting new patients
Alliance Health of Brockton, Inc. Past Accepting new patients
Hannah B. Griffith Shaw Home for the Aged, Inc. Past Accepting new patients
405 River Street Operating Company, LLC Past Accepting new patients
Southeast Ma SNF LLC Past Accepting new patients
Southshore Ma SNF LLC Past Accepting new patients
Brockton Hospital, Inc. Past Accepting new patients
Alliance Health of Wrentham, Inc. Past Accepting new patients
193 Pleasant Street Operator LLC Past Accepting new patients
Edgar P Benjamin Healthcare Center, Inc Past Accepting new patients
Bear Mt Mattapan, LLC Past Accepting new patients

Locations

277 Washington St
Abington, MA 02351
Phone (781) 871-0200

89 Morton St
Andover, MA 01810
Phone (978) 475-0944

84 Myrtle St
Ashland, MA 01721
Phone (508) 881-1360

95 Commercial St
Braintree, MA 02184
Phone (781) 848-0596

110 Liberty St
Brockton, MA 02301

2 Beaumont Ave
Brockton, MA 02302
Phone (508) 588-8500

680 Centre St
Brockton, MA 02302
Phone (508) 941-7400

45 Dan Rd
Canton, MA 02021
Phone (781) 318-3609

111 Orient Ave
East Boston, MA 02128
Phone (617) 569-1200

170 Governors Ave
Medford, MA 02155
Phone (781) 306-6000

10 Veterans Memorial Dr
Milford, MA 01757
Phone (508) 473-6414

67 Union St
Natick, MA 01760
Phone (508) 383-1104

204 Proctor Ave
Revere, MA 02151
Phone (781) 286-3100

111 Huntoon Memorial Hwy
Rochdale, MA 01542
Phone (508) 892-4858

120 Fisher Ave
Roxbury Xing, MA 02120
Phone (617) 566-2361

37 Route 6A
Sandwich, MA 02563
Phone (508) 888-8222

Interoperability endpoints

  • Direct secure messaging: alireza.toossi@direct.signature.masshiway.net

Ownership & related parties

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
Life Care Center of West BridgewaterWest Bridgewater, MA, CCN 225704 Skilled nursing facility Operational/Managerial Control
Adp of the SNF		 Nov 1, 2023
Apr 7, 2025

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

Organizations & group practices 28

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.

View all 28

Hospital & facility affiliations 11

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": "1191196800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754956800000",
    "number": "1780871970",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "22 LIBERTY DR 6F",
            "address_2": "SUITE 6F",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02210",
            "telephone_number": "617-244-1669",
            "fax_number": "617-244-6769"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "22 LIBERTY DR",
            "address_2": "SUITE 6F",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02210",
            "telephone_number": "617-244-1669",
            "fax_number": "617-244-6769"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "110 Liberty St",
            "address_purpose": "LOCATION",
            "city": "Brockton",
            "state": "MA",
            "postal_code": "023015674",
            "country_code": "US",
            "telephone_number": "508-941-7000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TOOSSI",
        "first_name": "ALIREZA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-10-01",
        "last_updated": "2025-08-12",
        "certification_date": "2025-08-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "AZ",
            "license": "37478",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "234084",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "272389-01",
            "state": "AZ"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "110081675A",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.