Individual provider Active NPI

Seth R Sonenthal, LICSW, SUDP

  • Clinical Social Worker
  • Seattle, WA
National Provider Identifier
1124538103
Registry record updated Apr 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Social WorkerTaxonomy code 1041C0700X
License
LW60951016 Issued in WA
Practice address
4742 42ND Ave SW Unit 122
Seattle, WA 98116-4553
Phone
(206) 403-0173
Fax
(206) 326-1223
NPI assigned
Oct 4, 2017
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 14, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social Worker 1041C0700X LW60951016 WA Primary

Addresses

Primary practice location

4742 42ND Ave SW Unit 122
Seattle, WA 98116-4553

Mailing address

4742 42ND Ave SW Unit 122
Seattle, WA 98116-4553
Phone (206) 403-0173

Other practice location 1

4501 15th Ave S Ste 102
Seattle, WA 98108-1874
Phone (206) 403-0173

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
Eligible to order & refer
  • Part B services: No
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
LW60951016WAMDClinical Social Worker

NPI Registry JSON

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

{
    "created_epoch": "1507075200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776124800000",
    "number": "1124538103",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4742 42ND AVE SW UNIT 122",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981164553",
            "telephone_number": "206-403-0173",
            "fax_number": "206-326-1223"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4742 42ND AVE SW UNIT 122",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981164553",
            "telephone_number": "206-403-0173",
            "fax_number": "206-326-1223"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4501 15th Ave S Ste 102",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981081874",
            "country_code": "US",
            "telephone_number": "206-403-0173",
            "fax_number": "206-326-1223",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SONENTHAL",
        "first_name": "SETH",
        "middle_name": "R",
        "credential": "LICSW, SUDP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-10-04",
        "last_updated": "2026-04-14",
        "certification_date": "2026-04-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "WA",
            "license": "LW60951016",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.