Individual provider Active NPI

Catherine O'Brien, CRNA

  • Certified Registered Nurse Anesthetist
  • Springfield, MA
National Provider Identifier
1235521758
Registry record updated Sep 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
217699 Issued in MA
Practice address
908 Allen St
Springfield, MA 01118-2533
Phone
(781) 407-7713
Fax
(781) 407-0998
NPI assigned
Feb 20, 2015
Last updated
Sep 14, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 14, 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 16521 CT
Certified Registered Nurse Anesthetist 367500000X 217699 MA Primary

Addresses

Primary practice location

908 Allen St
Springfield, MA 01118-2533

Mailing address

908 Allen St
Springfield, MA 01118-2533
Phone (781) 407-7713

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20150406000244 MA Practitioner - Certified Registered Nurse Anesthetist (Crna) 5193043016 Reassigns benefits to 6 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Baystate Medical Practices IncGroup PAC ID 5991602971, 1,350 clinicians
Pulse Anesthesia Consultants PCGroup PAC ID 8921479809, 16 clinicians
Umass Memorial Medical Group IncGroup PAC ID 4284539891, 2,494 clinicians
Holyoke Medical Center IncGroup PAC ID 2163419383, 202 clinicians

Practice addresses (Care Compare)

280 Chestnut St
Suite 2
Springfield, MA 01199-1001

40 Wright St
Palmer, MA 01069-1138
Phone (413) 370-5356

50 Wason Ave
FL 2
Springfield, MA 01107-1280
Phone (413) 794-1800

55 Lake Ave N
Worcester, MA 01655-0002
Phone (508) 334-1000

575 Beech St
Holyoke, MA 01040-2223
Phone (413) 534-2500

759 Chestnut St
Springfield, MA 01199-1001
Phone (413) 794-5439

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
217699MAMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Springfield Anesthesia Service, Inc. CurrentSince Feb 2, 2015 Accepting new patients
Tri Anesthesia LLC CurrentSince Feb 25, 2026 Accepting new patients
Baystate Medical Practices, Inc CurrentSince Jan 1, 2025 Accepting new patients

Locations

575 Beech St
Holyoke, MA 01040
Phone (413) 534-2570

280 Chestnut St
Fl 2
Springfield, MA 01199
Phone (413) 788-4385

50 Wason Ave
Fl 2
Springfield, MA 01107
Phone (413) 286-1020

759 Chestnut St
Springfield, MA 01199
Phone (413) 794-3233

908 Allen St
Springfield, MA 01118
Phone (413) 732-5139

300 Grove St
Worcester, MA 01605
Phone (508) 754-0700

Organizations & group practices 6

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.

Hospital & facility affiliations 3

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": "1424390400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789344000000",
    "number": "1235521758",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "908 ALLEN ST",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011182533",
            "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": "908 ALLEN ST",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011182533",
            "telephone_number": "781-407-7713",
            "fax_number": "781-407-0998"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "CATHERINE",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-02-20",
        "last_updated": "2026-09-14",
        "certification_date": "2026-09-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "CT",
            "license": "16521",
            "primary": false
        },
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MA",
            "license": "217699",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Springfield, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 14, 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.