Ewa M Matczak, MD

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

E-20833 Issued in AR

Practice address

3901 Parkway Cir
Springdale, AR 72762-6362

Phone

(479) 587-1700

Fax

(479) 587-1366

NPI assigned

Jun 26, 2009

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

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in AR

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

Medical Oncology

Education

State University of New York Downstate Medical Center, 1991

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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.

• Highlands Oncology Group PA

  • Hematology & Oncology Physician
  • Springdale, AR
  • NPI 1346211323
  Medicare reassignment

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

{
    "created_epoch": "1245974400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783296000000",
    "number": "1346478468",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3901 PARKWAY CIR",
            "city": "SPRINGDALE",
            "state": "AR",
            "postal_code": "727626362",
            "telephone_number": "479-587-1700",
            "fax_number": "479-587-1366"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3901 PARKWAY CIR",
            "city": "SPRINGDALE",
            "state": "AR",
            "postal_code": "727626362",
            "telephone_number": "479-587-1700",
            "fax_number": "479-587-1366"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MATCZAK",
        "first_name": "EWA",
        "middle_name": "M",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-06-26",
        "last_updated": "2026-07-06",
        "certification_date": "2026-07-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "AR",
            "license": "E-20833",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "NYS LIC",
            "identifier": "198996-1",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Vanessa Martinez
• Yudith Anahi Martinez, M.S., CF-SLP
• Craig F Marvin, APRN
• Ashley Erin Mason, M.D.
• Kent A Mason, MD
• Carol Gene Mathews
• John Shannon Mathis
• Jennifer Mane Matousek-Ronck, DDS
• Megan Matsuyama, LPC
• Hailey Matthew, MSN, FNP-C

• Hematology & Oncology Physician in Springdale, AR
• Providers in Springdale, AR by specialty
• Hematology & Oncology Physician in Arkansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 6, 2026; 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.