NPIMap

Individual provider Active NPI

Cori Nicole Walker, MD

  • Otolaryngology Physician
  • Mason City, IA
National Provider Identifier
1972129542
Registry record updated Aug 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Otolaryngology PhysicianTaxonomy code 207Y00000X
License
MD-54872 Issued in IA
Practice address
250 S Crescent Dr
Mason City, IA 50401-2926
Phone
(641) 494-5380
Fax
(641) 494-5381
NPI assigned
Jun 19, 2020
Last updated
Aug 11, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 11, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Otolaryngology Physician 207Y00000X MD-54872 IA Primary

Addresses

Primary practice location

250 S Crescent Dr
Mason City, IA 50401-2926

Mailing address

250 S Crescent Dr
Mason City, IA 50401-2926
Phone (641) 494-5380

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250716002608 IA Practitioner - Otolaryngology 3678996659 Reassigns benefits to 7 organizations

Care Compare profile

Medicare Care Compare
Specialty
Otolaryngology
Education
University of Chicago, Pritzker School of Medicine, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
North Iowa Mercy ClinicsGroup PAC ID 7810809076, 304 clinicians
Mercy Medical Center New HamptonGroup PAC ID 9032006325, shared by 3 NPIs, 18 clinicians

Practice addresses (Care Compare)

1000 4TH St SW
Mason City, IA 50401-2800

250 S Crescent Dr
Mason City, IA 50401-2926

308 N Maple Ave
New Hampton, IA 50659-1142

635 E US Hwy 9
Mercyone Forest City Family Medicine
Forest City, IA 50436-1028
Phone (641) 585-2904

804 Kenyon Rd
Suite J
Fort Dodge, IA 50501-5744
Phone (515) 574-8490

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Melanoma (skin cancer) excision13
Skin biopsy1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD-54872IAMDOtolaryngology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mason City Clinic PC Otolaryngology CurrentSince Aug 11, 2025 Accepting new patients
Iowa Specialty Hospital- Clarion CurrentSince Aug 11, 2025 Accepting new patients
North Iowa Mercy Clinics Current Accepting new patients
North Iowa Mercy Clinics CurrentSince Aug 11, 2025 Accepting new patients
North Iowa Mercy Clinics Current Accepting new patients
Iowa Specialty Hospital- Clarion Current Accepting new patients
Belmond Community Hospital CurrentSince Aug 11, 2025 Accepting new patients
Belmond Community Hospital Current Accepting new patients
North Iowa Mercy Clinics CurrentSince Aug 11, 2025 Accepting new patients
Floyd County Memorial Hospital Commission Past Accepting new patients
North Iowa Mercy Clinics Past Accepting new patients
Belmond Community Hospital Past Accepting new patients

Locations

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

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

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

250 S Crescent Dr
Mason City, IA 50401
Phone (541) 422-6588

250 S Crescent Dr
Ste 102
Mason City, IA 50401
Phone (614) 494-5380

250 S Crescent Dr
Ste M1400
Mason City, IA 50401
Phone (641) 494-5380

Organizations & group practices 13

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.

View all 13

Hospital & facility affiliations 4

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": "1592524800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754870400000",
    "number": "1972129542",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "250 S CRESCENT DR",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012926",
            "telephone_number": "641-494-5380"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "250 S CRESCENT DR",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012926",
            "telephone_number": "641-494-5380",
            "fax_number": "641-494-5381"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WALKER",
        "first_name": "CORI",
        "middle_name": "NICOLE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-06-19",
        "last_updated": "2025-08-11",
        "certification_date": "2025-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "IA",
            "license": "MD-54872",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Mason City, IA

Sources for this page

Verify at the official NPI Registry.