NPIMap

Individual provider Active NPI

Michael D. Harder, D.O.

  • Family Medicine Physician
  • Sioux City, IA
National Provider Identifier
1427064146
Registry record updated Feb 27, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
3726 Issued in IA
Practice address
4230 Hamilton Blvd
Sioux City, IA 51104-1137
Phone
(712) 239-4900
Fax
(712) 239-2866
NPI assigned
Aug 1, 2006
Last updated
Feb 27, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 27, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 3726 IA Primary

Addresses

Primary practice location

4230 Hamilton Blvd
Sioux City, IA 51104-1137

Mailing address

200 Gold Cir Ste 120
Dakota Dunes, SD 57049-5501
Phone (605) 217-0700

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IA, SD2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20061213000445 IA Practitioner - Family Practice 6305845637 Reassigns benefits to 1 organization
I20191030001510 SD Practitioner - Family Practice 6305845637 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Other, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Family Health Care of Siouxland PLCGroup PAC ID 7315839412, 49 clinicians

Practice addresses (Care Compare)

4230 Hamilton Blvd
Sioux City, IA 51104-1137
Phone (712) 239-4300

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions12
Removal of nail tissue1-10
Skin biopsy1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
3726IAMDFamily Medicine Physician
03726IAMDPhysical Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
St Luke's Methodist Hospital Current Accepting new patients
Family Health Care of Siouxland PLC Family Medicine CurrentSince Nov 1, 2015 Accepting new patients
Diagnostic Radiology PC PastSince Sep 10, 2023 Accepting new patients
Family Health Care of Siouxland LLC Family Medicine PastSince Dec 7, 2025 Accepting new patients
Northwest Iowa Emergency Physicians, PC Past Accepting new patients

Locations

4230 Hamilton Blvd
Sioux City, IA 51104
Phone (712) 239-4300

4545 Sergeant Rd
Sioux City, IA 51106
Phone (712) 274-2400

814 Pierce St
Ste 300
Sioux City, IA 51101
Phone (712) 226-2600

200 Gold Cir
Ste 120
Dakota Dunes, SD 57049

345 W Steamboat Dr
Ste 401
Dakota Dunes, SD 57049
Phone (605) 217-2195

Interoperability endpoints

  • Direct secure messaging: mharder128232@direct.unitypoint.org
  • Direct secure messaging: michaelharder@fhcs.allscriptsdirect.net

Organizations & group practices 5

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.

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": "1154390400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772150400000",
    "number": "1427064146",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 GOLD CIR STE 120",
            "city": "DAKOTA DUNES",
            "state": "SD",
            "postal_code": "570495501",
            "telephone_number": "605-217-0700",
            "fax_number": "605-217-0701"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4230 HAMILTON BLVD",
            "city": "SIOUX CITY",
            "state": "IA",
            "postal_code": "511041137",
            "telephone_number": "712-239-4900",
            "fax_number": "712-239-2866"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARDER",
        "first_name": "MICHAEL",
        "middle_name": "D.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-01",
        "last_updated": "2026-02-27",
        "certification_date": "2026-02-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IA",
            "license": "3726",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Sioux City, IA

Sources for this page

Verify at the official NPI Registry.