Individual provider Active NPI

Nathanael L Rosario, CRNA

  • Certified Registered Nurse Anesthetist
  • East Longmeadow, MA
National Provider Identifier
1023327152
Registry record updated Mar 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
261691 Issued in MA
Practice address
34 Pembroke Ter
East Longmeadow, MA 01028-3187
Phone
(413) 244-4776
NPI assigned
Oct 7, 2010
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 14, 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 261691 MA Primary

Addresses

Primary practice location

34 Pembroke Ter
East Longmeadow, MA 01028-3187

Mailing address

34 Pembroke Ter
East Longmeadow, MA 01028-3187
Phone (413) 244-4776

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA, CT2 enrollments

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20110204000372 MA Practitioner - Certified Registered Nurse Anesthetist (Crna) 2769662949 Reassigns benefits to 5 organizations
I20240227001557 CT Practitioner - Certified Registered Nurse Anesthetist (Crna) 2769662949 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2010
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Holyoke Medical Center IncGroup PAC ID 2163419383, 202 clinicians
Integrated Anesthesia Associates LLCGroup PAC ID 1759281165, 402 clinicians

Practice addresses (Care Compare)

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

80 Semour St
Hartford, CT 06106-3315
Phone (860) 972-2117

Hospital & facility affiliations

  • Holyoke Medical Center Hospital, Holyoke, MA, CCN 220024
  • Hartford Hospital Hospital, Hartford, CT, CCN 070025

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
261691MAMDCertified Registered Nurse Anesthetist

Practice roles

OrganizationSpecialtyStatusNew patients
Amsurg Mdsine Anesthesia LLC Nurse Anesthetist, Certified Registered CurrentSince Nov 5, 2025 Accepting new patients
Woodland Anesthesia Associates PC CurrentSince Jan 1, 2025 Accepting new patients
Integrated Anesthesia Associates LLC Nurse Anesthetist, Certified Registered CurrentSince Jan 17, 2024 Accepting new patients
Springfield Anesthesia Service, Inc. CurrentSince Dec 10, 2010 Accepting new patients
Pioneer Sedation PLLC Nurse Anesthetist, Certified Registered CurrentSince Sep 8, 2022 Accepting new patients
Holyoke Medical Center, Inc. CurrentSince Mar 1, 2025 Accepting new patients
Holyoke Medical Center, Inc. CurrentSince Mar 1, 2025 Accepting new patients
Umass Memorial Medical Group Inc Past Accepting new patients

Locations

701 Cottage Grove Rd
Ste F230
Bloomfield, CT 06002
Phone (860) 243-5569

114 Woodland St
Hartford, CT 06105
Phone (860) 714-4001

80 Seymour St
Hartford, CT 06106
Phone (860) 545-2249

99 E River Dr
Fl 5
Hartford, CT 06108
Phone (860) 282-4022

2 Corporate Dr
Ste 955
Shelton, CT 06484
Phone (203) 929-7375

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

3550 Main St
Ste 103
Springfield, MA 01107
Phone (413) 788-9700

55 Saint George Rd
Springfield, MA 01104
Phone (413) 276-4543

271 Carew St
Springfield, MA 01104
Phone (413) 748-9000

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

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

Organizations & group practices 9

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 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": "1286409600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773446400000",
    "number": "1023327152",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "34 PEMBROKE TER",
            "city": "EAST LONGMEADOW",
            "state": "MA",
            "postal_code": "010283187",
            "telephone_number": "413-244-4776"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "34 PEMBROKE TER",
            "city": "EAST LONGMEADOW",
            "state": "MA",
            "postal_code": "010283187",
            "telephone_number": "413-244-4776"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ROSARIO",
        "first_name": "NATHANAEL",
        "middle_name": "L",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-10-07",
        "last_updated": "2026-03-14",
        "certification_date": "2026-03-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MA",
            "license": "261691",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in East Longmeadow, MA

Sources for this page

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