Active NPI
Nathanael L Rosario, CRNA
- Certified Registered Nurse Anesthetist
- East Longmeadow, MA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Certified Registered Nurse Anesthetist
- License
- 261691
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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, CT
Enrollment records 2
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| 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 IncIntegrated Anesthesia Associates LLC
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
- Hartford Hospital
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 261691 | MA | MD | Certified Registered Nurse Anesthetist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Amsurg Mdsine Anesthesia LLC | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Woodland Anesthesia Associates PC | Current | Accepting new patients | |
| Integrated Anesthesia Associates LLC | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Springfield Anesthesia Service, Inc. | Current | Accepting new patients | |
| Pioneer Sedation PLLC | Nurse Anesthetist, Certified Registered | Current | Accepting new patients |
| Holyoke Medical Center, Inc. | Current | Accepting new patients | |
| Holyoke Medical Center, Inc. | Current | 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.
-
- Anesthesiology Physician
- Shelton, CT
- NPI 1881636397
CT, Nurse Anesthetist, Certified Registered
-
- Anesthesiology Physician
- Springfield, MA
- NPI 1932521366
MA, Nurse Anesthetist, Certified Registered
-
- Certified Registered Nurse Anesthetist
- Springfield, MA
- NPI 1154886810
MA, Nurse Anesthetist, Certified Registered
-
- General Acute Care Hospital
- Holyoke, MA
- NPI 1750395737
-
- Psychiatric Hospital Unit
- Holyoke, MA
- NPI 1083776140
-
- Internal Medicine Physician
- Worcester, MA
- NPI 1760445373
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.