Individual provider Active NPI

Karin Maback, CRNA

  • Certified Registered Nurse Anesthetist
  • Westwood, MA
National Provider Identifier
1366412728
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
171475 Issued in MA
Practice address
690 Canton St
Suite 325
Westwood, MA 02090-2321
Phone
(781) 407-7713
Fax
(781) 407-0998
NPI assigned
Jan 26, 2006
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
Certified Registered Nurse Anesthetist 367500000X 171475 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

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20090206000221 MA Practitioner - Certified Registered Nurse Anesthetist (Crna) 5092879080 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Ivs Anesthesia LLCGroup PAC ID 9537233010, 9 clinicians

Practice addresses (Care Compare)

349 N Main St
Andover, MA 01810-2687
Phone (978) 475-0959

Merit-based Incentive Payment System (MIPS)

Final score
88.85 of 100Reported as group
Quality
77.71
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

State licenses

LicenseStateTypeSpecialty
171475MAMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Ivs Anesthesia, LLC CurrentSince Jan 5, 2009 Accepting new patients
Merrimack Valley Anesthesia Associates, PC Past Accepting new patients
Merrimack Valley Anesthesia Nurse Anesthetist, Certified Registered Past Accepting new patients

Locations

349 N Main St
Andover, MA 01810
Phone (978) 475-0959

690 Canton St
Ste 325
Westwood, MA 02090
Phone 7814077713307

Organizations & group practices 3

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": "1138233600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1366412728",
    "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": "MABACK",
        "first_name": "KARIN",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-01-26",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MA",
            "license": "171475",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Westwood, 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.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.