NPIMap

Individual provider Active NPI

Anna Ruth Holzer, MD

  • Family Medicine Physician
  • Altoona, IA
National Provider Identifier
1457664799
Registry record updated Dec 21, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
MD-40441 Issued in IA
Practice address
3770 8TH St SW
Suite B
Altoona, IA 50009-1048
Phone
(515) 270-1000
Fax
(515) 967-5581
NPI assigned
Jul 15, 2010
Last updated
Dec 21, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 21, 2025

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 MD-40441 IA Primary

Addresses

Primary practice location

3770 8TH St SW
Suite B
Altoona, IA 50009-1048

Mailing address

3770 8TH St SW
Suite B
Altoona, IA 50009-1048
Phone (515) 270-1000

Other practice location 1

800 E 1st St Ste 1500
Ankeny, IA 50021-2079
Phone (515) 461-9782

Other names 1

  • Anna Ruth Eason Former name

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
I20120824000607 IA Practitioner - Family Practice 0446407571 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Family Practice
Education
Other, 2010
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Curana Health of Iowa PLLCGroup PAC ID 9133536113, 152 clinicians
CH Specialty Services Ia PCGroup PAC ID 2466826102, 130 clinicians

Practice addresses (Care Compare)

200 16TH Ave E
Oakwood Spec Care
Albia, IA 52531-2718
Phone (737) 226-6700

444 N W View Dr
Osceola, IA 50213-8267
Phone (337) 991-9276

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Floyd County Memorial Hospital Commission Family Medicine Current Accepting new patients
Floyd County Memorial Hospital Commission Current Accepting new patients
Mercy Clinics, Inc. Family Medicine CurrentSince Dec 9, 2025 Accepting new patients
Floyd County Memorial Hospital Commission Family Medicine CurrentSince Aug 1, 2025 Accepting new patients
Curana Health of Iowa PLLC CurrentSince Sep 2, 2025 Accepting new patients
CH Specialty Services Ia PC CurrentSince Sep 2, 2025 Accepting new patients
Doctorsnow Doral LLC PastSince Nov 1, 2015 Accepting new patients

Locations

200 16th Ave E
Spc Care
Albia, IA 52531

800 E 1st St
Ste 1500
Ankeny, IA 50021
Phone (515) 461-9782

800 E 1st St
Ste 1700
Ankeny, IA 50021
Phone (515) 643-8100

1501 S Main St
Ste 6
Charles City, IA 50616
Phone (641) 228-5151

800 11th St
Charles City, IA 50616
Phone (641) 228-6830

1601 NW 114th St
Ste 247
Des Moines, IA 50325
Phone (515) 222-7000

444 N West View Dr
Osceola, IA 50213
Phone (641) 342-6061

Interoperability endpoints

  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

Organizations & group practices 7

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 15

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

View all 15

NPI Registry JSON

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

{
    "created_epoch": "1279152000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1766275200000",
    "number": "1457664799",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3770 8TH ST SW",
            "address_2": "SUITE B",
            "city": "ALTOONA",
            "state": "IA",
            "postal_code": "500091048",
            "telephone_number": "515-270-1000",
            "fax_number": "515-967-5581"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3770 8TH ST SW",
            "address_2": "SUITE B",
            "city": "ALTOONA",
            "state": "IA",
            "postal_code": "500091048",
            "telephone_number": "515-270-1000",
            "fax_number": "515-967-5581"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "800 E 1st St Ste 1500",
            "address_purpose": "LOCATION",
            "city": "Ankeny",
            "state": "IA",
            "postal_code": "500212079",
            "country_code": "US",
            "telephone_number": "515-461-9782",
            "fax_number": "515-461-9781",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOLZER",
        "first_name": "ANNA",
        "middle_name": "RUTH",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-07-15",
        "last_updated": "2025-12-21",
        "certification_date": "2025-12-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IA",
            "license": "MD-40441",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ANNA",
            "last_name": "EASON",
            "middle_name": "RUTH",
            "credential": "M.D.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Altoona, IA

Sources for this page

Verify at the official NPI Registry.