NPIMap

Organization Active NPI

Preferred Anesthesia LLC

  • Anesthesiology Physician
  • Olympia, WA
National Provider Identifier
1740126465
Registry record updated Apr 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
Legal business name
PREFERRED ANESTHESIA LLC
Practice address
4515 Trenton Loop SE
Olympia, WA 98501-4800
Phone
(208) 602-1957
NPI assigned
Apr 25, 2026
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Apr 25, 2026

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

Authorized official

Name
Mr. Darrel Larson, CRNANPI 1184096620
Title
Owner
Phone
(208) 514-7707

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207L00000X Primary

Addresses

Primary practice location

4515 Trenton Loop SE
Olympia, WA 98501-4800

Mailing address

4515 Trenton Loop SE
Olympia, WA 98501-4800
Phone (208) 602-1957

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1777075200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1777075200000",
    "number": "1740126465",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4515 TRENTON LOOP SE",
            "city": "OLYMPIA",
            "state": "WA",
            "postal_code": "985014800",
            "telephone_number": "208-602-1957"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4515 TRENTON LOOP SE",
            "city": "OLYMPIA",
            "state": "WA",
            "postal_code": "985014800",
            "telephone_number": "208-602-1957"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "PREFERRED ANESTHESIA LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-04-25",
        "last_updated": "2026-04-25",
        "certification_date": "2026-04-25",
        "status": "A",
        "authorized_official_last_name": "LARSON",
        "authorized_official_first_name": "DARREL",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "208-514-7707",
        "authorized_official_name_prefix": "Mr.",
        "authorized_official_credential": "CRNA"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Anesthesiology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Olympia, WA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 25, 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.