Individual provider Active NPI

William D Matthews, M.D.

  • Diagnostic Radiology Physician
  • Mason City, IA
National Provider Identifier
1114973377
Registry record updated Sep 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
33563 Issued in IA
Practice address
1010 4TH St SW
Suite 100
Mason City, IA 50401-2857
Phone
(641) 424-0102
Fax
(641) 424-8059
NPI assigned
May 26, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 14, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X 33563 IA Primary

Addresses

Primary practice location

1010 4TH St SW
Suite 100
Mason City, IA 50401-2857

Mailing address

1416 6TH St SW
Mason City, IA 50401-4818
Phone (641) 424-0102

Other practice location 1

1924 Superior St
Webster City, IA 50595-3146
Phone (844) 474-4321

Other practice location 2

2700 1st Ave S
Fort Dodge, IA 50501-4300
Phone (844) 474-4321

Other practice location 3

104 S Story St
Boone, IA 50036-4737
Phone (844) 474-4321

Other practice location 4

1316 S Main St
Clarion, IA 50525-2019
Phone (844) 474-4321

Other practice location 5

401 S 17th St
Clear Lake, IA 50428-2304
Phone (844) 474-4321

Other practice location 6

403 1st St SE
Belmond, IA 50421-1201
Phone (844) 474-4321

Other practice location 7

520 S Pierce Ave
Mason City, IA 50401-2749
Phone (641) 428-9200

Other practice location 8

840 W US Highway 18
Garner, IA 50438-1023
Phone (641) 444-3223

Other identifiers 2

IdentifierTypeStateIssuer
0216382MedicaidIA
23028OtherIAWELLMARK BCBS OF IA

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address mc.mmcmc.him@direct.2.mycarefile.org Direct MercyOne North Iowa

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IA
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

Enrollment IDStateProvider typePAC IDDetails
I20070113000118 IA Practitioner - Diagnostic Radiology 5092715144 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic Radiology
Education
University of South Florida College of Medicine, 1991
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Iowa Specialty Hospital- ClarionGroup PAC ID 3375451347, shared by 6 NPIs, 94 clinicians
Radiologists of North Iowa PCGroup PAC ID 4981592730, 13 clinicians

Practice addresses (Care Compare)

1316 S Main St
Clarion, IA 50525-2019
Phone (515) 532-2811

1416 6TH St SW
Mason City, IA 50401-4818
Phone (641) 424-0102

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
97.33 of 100Reported as group
Quality
94.65
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
33563IAMDDiagnostic Radiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Radiologists of North Iowa PC Diagnostic Radiology CurrentSince Jul 1, 2000 Accepting new patients
Iowa Specialty Hospital- Clarion CurrentSince Apr 1, 2025 Accepting new patients
Iowa Specialty Hospital- Clarion Current Accepting new patients
Belmond Community Hospital Current Accepting new patients
Belmond Community Hospital CurrentSince Apr 1, 2025 Accepting new patients
Radiologists of North Iowa PC PastSince Aug 25, 2024 Accepting new patients
University Imaging Inc Diagnostic Radiology Past Accepting new patients
University Radiologists of Cleveland Inc Diagnostic Radiology Past Accepting new patients

Locations

1515 S Phillips St
Algona, IA 50511
Phone (515) 295-2451

403 1st St SE
Belmond, IA 50421
Phone (641) 444-3223

104 S Story St
Boone, IA 50036
Phone (515) 432-1642

532 1st St NW
Britt, IA 50423
Phone (641) 843-4403

1316 S Main St
Clarion, IA 50525
Phone (515) 532-2811

215 13th Ave SW
Clarion, IA 50525
Phone (515) 532-2836

401 S 17th St
Clear Lake, IA 50428
Phone (515) 832-1200

2700 1st Ave S
Fort Dodge, IA 50501
Phone (515) 576-3338

2700 1st Ave S
Ste 100
Fort Dodge, IA 50501
Phone (515) 955-6767

840 W US Highway 18
Garner, IA 50438
Phone (641) 925-1500

1416 6th St SW
Mason City, IA 50401
Phone (515) 424-4932

1000 4th St SW
Mason City, IA 50401
Phone (641) 424-6704

1010 4th St SW
Ste 100
Mason City, IA 50401
Phone (515) 424-4932

308 N Maple Ave
New Hampton, IA 50659
Phone (641) 394-2151

616 N 8th St
Osage, IA 50461
Phone (641) 732-6000

Interoperability endpoints

  • Direct secure messaging: wmatthews145235@uihcdirect.org

Organizations & group practices 8

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.

Hospital & facility affiliations 5

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1148601600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789344000000",
    "number": "1114973377",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1416 6TH ST SW",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504014818",
            "telephone_number": "641-424-0102",
            "fax_number": "641-424-8059"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1010 4TH ST SW",
            "address_2": "SUITE 100",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012857",
            "telephone_number": "641-424-0102",
            "fax_number": "641-424-8059"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1924 Superior St",
            "address_purpose": "LOCATION",
            "city": "Webster City",
            "state": "IA",
            "postal_code": "505953146",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "515-832-1114",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2700 1st Ave S",
            "address_purpose": "LOCATION",
            "city": "Fort Dodge",
            "state": "IA",
            "postal_code": "505014300",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "515-576-8581",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "104 S Story St",
            "address_purpose": "LOCATION",
            "city": "Boone",
            "state": "IA",
            "postal_code": "500364737",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "515-432-2895",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1316 S Main St",
            "address_purpose": "LOCATION",
            "city": "Clarion",
            "state": "IA",
            "postal_code": "505252019",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "515-532-3119",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "401 S 17th St",
            "address_purpose": "LOCATION",
            "city": "Clear Lake",
            "state": "IA",
            "postal_code": "504282304",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "515-832-1400",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "403 1st St SE",
            "address_purpose": "LOCATION",
            "city": "Belmond",
            "state": "IA",
            "postal_code": "504211201",
            "country_code": "US",
            "telephone_number": "844-474-4321",
            "fax_number": "641-444-5554",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "520 S Pierce Ave",
            "address_purpose": "LOCATION",
            "city": "Mason City",
            "state": "IA",
            "postal_code": "504012749",
            "country_code": "US",
            "telephone_number": "641-428-9200",
            "fax_number": "641-428-9219",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "840 W US Highway 18",
            "address_purpose": "LOCATION",
            "city": "Garner",
            "state": "IA",
            "postal_code": "504381023",
            "country_code": "US",
            "telephone_number": "641-444-3223",
            "fax_number": "641-925-1507",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MATTHEWS",
        "first_name": "WILLIAM",
        "middle_name": "D",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-26",
        "last_updated": "2026-09-14",
        "certification_date": "2026-09-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "IA",
            "license": "33563",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0216382",
            "state": "IA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "WELLMARK BCBS OF IA",
            "identifier": "23028",
            "state": "IA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mc.mmcmc.him@direct.2.mycarefile.org",
            "affiliation": "Y",
            "endpointDescription": "Direct email Address",
            "affiliationName": "MercyOne North Iowa",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1010 4th St SW",
            "address_2": "Suite 100",
            "city": "Mason City",
            "state": "IA",
            "country_code": "US",
            "postal_code": "504012857",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Mason City, IA

Sources for this page

Verify at the official NPI Registry.