Mateusz P. Karwowski, M.D., M.P.H.

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

MD61673723 Issued in WA

Practice address

4001 N Cook St Ste 900
Spokane, WA 99207-5879

Phone

(509) 483-3427

Fax

(509) 865-0757

NPI assigned

Jun 22, 2006

Last updated

Sep 16, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in WA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Pediatric Medicine

Education

Other, 2006

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Yakima Valley Farm Workers Clinic

  dba Behavioral Health Services

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Yakima, WA
  • NPI 1295788602
  Medicare reassignment NPD
• Yakima Valley Farm Workers Clinic

  dba Miramar Health Center

  • Federally Qualified Health Center (FQHC)
  • Pasco, WA
  • NPI 1235265455
  NPD
• Yakima Valley Farm Workers Clinic

  dba Community Health Center of Clatskanie

  • Federally Qualified Health Center (FQHC)
  • Clatskanie, OR
  • NPI 1578000345
  NPD
• Children's Hospital Pediatric Associates, Inc

  • Pediatrics Physician
  • Boston, MA
  • NPI 1457306664
  NPD (past)

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

{
    "created_epoch": "1150934400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757980800000",
    "number": "1598701849",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 190",
            "city": "TOPPENISH",
            "state": "WA",
            "postal_code": "989480190",
            "telephone_number": "509-865-2395",
            "fax_number": "509-865-0757"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4001 N COOK ST STE 900",
            "city": "SPOKANE",
            "state": "WA",
            "postal_code": "992075879",
            "telephone_number": "509-483-3427",
            "fax_number": "509-865-0757"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KARWOWSKI",
        "first_name": "MATEUSZ",
        "middle_name": "P.",
        "credential": "M.D., M.P.H.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-22",
        "last_updated": "2025-09-16",
        "certification_date": "2025-09-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "246895",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "WA",
            "license": "MD61673723",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "WI",
            "license": "51544-020",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rachel Karns
• Jeffrey W Karp, M.D.
• Karen Lalia Karres, LMSW, LICSW
• Julia Anne Karschney
• Victoria K Karschney
• Emily Morgan Kaschmitter, DPT
• Ronda K Kasper-Braithwaite, AUD MA
• Amanda Kasper
• Linda Vania Kasper
• Paige Kasper

• Pediatrics Physician in Spokane, WA
• Providers in Spokane, WA by specialty
• Pediatrics Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 16, 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.