Gregory M Sibenaller, DO

Primary specialty

Student in an Organized Health Care Education/Training ProgramTaxonomy code 390200000X

Practice address

1010 4TH St SW Ste 305
Mason City, IA 50401-2801

Phone

(641) 428-5700

Fax

(641) 428-2515

NPI assigned

Apr 20, 2022

Last updated

Jul 14, 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 1

Addresses

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

Specialty

Family Practice

Education

West Virginia School of Osteopathic Medicine, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

St Anthony Regional Hospital and Nursing HomeGroup PAC ID 4688586829, shared by 8 NPIs, 49 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Anthony Regional Hospital & Nursing Home Hospital, Carroll, IA, CCN 161382

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: gmsibenaller@cynchealthdsm.org

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.

• St Anthony Regional Hospital and Nursing Home

  • Critical Access Hospital
  • Carroll, IA
  • NPI 1720067127
  Medicare reassignment NPD
• St Anthony Regional Hospital and Nursing Home

  • Family Medicine Physician
  • Carroll, IA
  • NPI 1801815972
  Medicare reassignment NPD
• Floyd County Memorial Hospital Commission

  • Critical Access Hospital
  • Charles City, IA
  • NPI 1265402390
  NPD (past)

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

• St Anthony Regional Hospital and Nursing Home

  • Critical Access Hospital
  • Carroll, IA
  • NPI 1720067127
  Care Compare affiliation

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

{
    "created_epoch": "1650412800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752451200000",
    "number": "1184367724",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "600 1ST ST NW STE 101",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012932"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1010 4TH ST SW STE 305",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012801",
            "telephone_number": "641-428-5700",
            "fax_number": "641-428-2515"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIBENALLER",
        "first_name": "GREGORY",
        "middle_name": "M",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-04-20",
        "last_updated": "2025-07-14",
        "certification_date": "2025-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Student in an Organized Health Care Education/Training Program in Mason City, IA
• Providers in Mason City, IA by specialty
• Student in an Organized Health Care Education/Training Program in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 14, 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.