Matthew David Niswander

Primary specialty

Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X

License

T-25-5158 Issued in OR

Practice address

10564 SE Washington St
Portland, OR 97216-2809

Phone

(503) 228-9229

NPI assigned

Jan 10, 2025

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: matthew.niswander.p1@direct.voaor.nextgenshare.com

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.

• Volunteers of America Inc.

  • Contractor
  • Portland, OR
  • NPI 1376611418
  NPD

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

{
    "created_epoch": "1736467200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750723200000",
    "number": "1174333272",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "19565 RIVER RD APT 61",
            "city": "GLADSTONE",
            "state": "OR",
            "postal_code": "970272229",
            "telephone_number": "503-388-1203"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10564 SE WASHINGTON ST",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972162809",
            "telephone_number": "503-228-9229"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NISWANDER",
        "first_name": "MATTHEW",
        "middle_name": "DAVID",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-01-10",
        "last_updated": "2025-06-24",
        "certification_date": "2025-06-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "175T00000X",
            "taxonomy_group": "",
            "desc": "Peer Specialist",
            "state": "OR",
            "license": "24-CRM-3982",
            "primary": false
        },
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "OR",
            "license": "T-25-5158",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nanette Helene Niski, L.AC.
• Jennifer Elizabeth Nisley
• Jennifer Elizabeth Nisly
• Haley Marie Nisson, BS
• Kimberly Anne Nistad, L.AC.
• Kenneth Masahiro Nitta, M.D.
• Debora Nitu, RN
• Danielle Briana-Hansen Nix, LMT
• Sarah G Nixon Meyer, LCSW
• Carolyn Kyle Nixon

• Addiction (Substance Use Disorder) Counselor in Portland, OR
• Providers in Portland, OR by specialty
• Addiction (Substance Use Disorder) Counselor in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 24, 2025; 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.