Sydney D Sivertsen, MSW, LICSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

LW61127740 Issued in WA

Practice address

4526 Federal Ave
Everett, WA 98203-2132

Phone

(425) 349-6200

NPI assigned

Jun 3, 2017

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in WA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Other, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Compass HealthGroup PAC ID 5799682357, 44 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

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.

• Compass Health

  • Community/Behavioral Health Agency
  • Everett, WA
  • NPI 1730136201
  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1496448000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747008000000",
    "number": "1063940070",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 257",
            "address_2": "PMB 6689",
            "city": "OLYMPIA",
            "state": "WA",
            "postal_code": "985070257",
            "telephone_number": "425-349-6200"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4526 FEDERAL AVE",
            "city": "EVERETT",
            "state": "WA",
            "postal_code": "982032132",
            "telephone_number": "425-349-6200"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIVERTSEN",
        "first_name": "SYDNEY",
        "middle_name": "D",
        "credential": "MSW, LICSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-06-03",
        "last_updated": "2025-05-12",
        "certification_date": "2025-05-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "WA",
            "license": "LW61127740",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tracy Sisk, LMHCA
• Alfonso Francisco Siu, MD
• Brandon Siu
• Jenny Siv, M.D.
• Nithya Siva, M.S., CCC-SLP
• Malgorzata Monika Siwek
• Thomas Skalley, MD
• Laura J. Skanse, PA-C
• Barbara Jean Skelly, M.A.
• Jay R Skidmore, PH.D.

• Clinical Social Worker in Everett, WA
• Providers in Everett, WA by specialty
• Clinical Social Worker in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.