Individual provider Active NPI

Matthew Mackos, CRNA

  • Certified Registered Nurse Anesthetist
  • Concord, MA
National Provider Identifier
1912838327
Registry record updated Jun 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
RN2325630 Issued in MA
Practice address
133 Old Road to 9 Acre Cor
Concord, MA 01742-4159
Phone
(978) 369-1400
NPI assigned
May 26, 2026
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 16, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X RN2325630 MA Primary
Registered Nurse 163W00000X RN2325630 MA

Addresses

Primary practice location

133 Old Road to 9 Acre Cor
Concord, MA 01742-4159

Mailing address

6 Powdermill Rd Apt 6332
Acton, MA 01720-5972
Phone (978) 319-3543

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
RN2325630MAMDRegistered Nurse

NPI Registry JSON

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

{
    "created_epoch": "1779753600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781568000000",
    "number": "1912838327",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6 POWDERMILL RD APT 6332",
            "city": "ACTON",
            "state": "MA",
            "postal_code": "017205972",
            "telephone_number": "978-319-3543"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "133 OLD ROAD TO 9 ACRE COR",
            "city": "CONCORD",
            "state": "MA",
            "postal_code": "017424159",
            "telephone_number": "978-369-1400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MACKOS",
        "first_name": "MATTHEW",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-05-26",
        "last_updated": "2026-06-16",
        "certification_date": "2026-06-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MA",
            "license": "RN2325630",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "MA",
            "license": "RN2325630",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Concord, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 16, 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.