ANNA RUTH HOLZER MD
NPI 1457664799
Family Medicine in Altoona, IA

Q: What is Anna Holzer's NPI number?

The NPI number for Anna Holzer is 1457664799. It was assigned to this individual provider in the NPPES registry on July 15, 2010. The provider is also known as Anna Ruth Eason M.D..

Q: What is Anna Holzer's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Anna Holzer was last updated on December 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 15, 2010PECOS EnrolledAccepts Medicare Assignment

3770 8TH ST SW, SUITE B, ALTOONA, IA 50009(515) 270-1000(515) 967-5581 Get Directions Write a Review

NPPES record last updated: December 21, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Anna Ruth Holzer Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ANNA RUTH HOLZER MD (NPI 1457664799) is an individual family medicine provider in Altoona, Iowa, licensed in Iowa (MD-40441) and active in the NPI registry since July 2010. She is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and maintains a secondary practice location in Ankeny.

NPPES Registry Identity

NPI1457664799

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameANNA RUTH HOLZERCredential: MD

Location Address3770 8TH ST SW, SUITE BAltoona, IA 50009-1048

Mailing Address3770 8th St Sw, Suite BAltoona, IA 50009-1048 · (515) 270-1000 · Fax (515) 967-5581

Phone(515) 270-1000

Fax(515) 967-5581

Sole ProprietorNo

Medical School CMSOtherGraduated 2010

Enumeration DateJuly 15, 2010

Last NPPES UpdateDecember 21, 2025

NPPES CertifiedDecember 21, 2025

✔ NPI 1457664799 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in IA · MD-40441

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

3770 8TH ST SW, Altoona, IA 50009

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Other Names 1

Former Name (1)Anna Ruth Eason M.d.

Secondary Practice Location 1

Location 1800 E 1st St Ste 1500Ankeny, IA 50021-2079 · Phone (515) 461-9782 · Fax (515) 461-9781

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health, Oscar Insurance Company, Sanford Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Anna Ruth Holzer Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID446407571

PECOS Enrollment IDI20120824000607

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Anna Holzer reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Clinics Inc

3.1 mi

Primary Care

5900 E UNIVERSITY AVE, SUITE 100
Pleasant Hill, IA 50327

Reassigned Medicare billing, Iowa enrollment
516 clinicians in this Medicare group

NPI 1215953856 (515) 643-2400

Ch Specialty Services Ia PC

44 mi

Internal Medicine

444 N WEST VIEW DR
Osceola, IA 50213

Reassigned Medicare billing, Iowa enrollment
204 clinicians in this Medicare group

NPI 1942909353 (337) 408-0797

Curana Health Of Iowa PLLC

44 mi

Internal Medicine

444 N WEST VIEW DR
Osceola, IA 50213

Reassigned Medicare billing, Iowa enrollment
217 clinicians in this Medicare group

NPI 1730773714 (337) 991-9276

Floyd County Memorial Hospital Commission

92 mi

Family Medicine

100 WARTBURG BLVD
Waverly, IA 50677

Reassigned Medicare billing, Iowa enrollment
Also billed through NPI 1265402390 (Iowa)
96 clinicians in this Medicare group

NPI 1598693830 (641) 228-6830

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

75 services37 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

53 services47 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

34 services34 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

29 services29 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 87426

An immunoassay test for severe acute respiratory syndrome coronavirus is a diagnostic tool. It uses your body's immune response to detect the presence of the virus. It involves taking a sample, usually from your nose or throat, which is then analyzed in a lab for signs of the virus.

21 services20 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

20 services19 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercyone North Iowa Medical Center

Acute Care Hospitals · Mason City, IA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number160064

Location1000 Fourth Street SWMason City, IA 50401 · Cerro Gordo County

Emergency services Birthing friendly

Iowa Specialty Hospital - Belmond

Critical Access Hospitals · Belmond, IA

OwnershipGovernment - Local

CMS Certification Number161301

Location403 First Street SEBelmond, IA 50421 · Wright County

Emergency services

Franklin General Hospital

Critical Access Hospitals · Hampton, IA

OwnershipGovernment - Local

CMS Certification Number161308

Location1720 Central Avenue EastHampton, IA 50441 · Franklin County

Emergency services

Story County Hospital

Critical Access Hospitals · Nevada, IA

OwnershipGovernment - Local

CMS Certification Number161333

Location640 South 19th StreetNevada, IA 50201 · Story County

Emergency services

Van Diest Medical Center

Critical Access Hospitals · Webster City, IA

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number161361

Location2350 Hospital DriveWebster City, IA 50595 · Hamilton County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50009 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$81.84 typical visit price

range $52.96 – $161.40

Typical copayment $20.46 (range $13.24 – $40.35)

Most-billed visit code 99203

Established Patient

$94.05 typical visit price

range $16.91 – $131.98

Typical copayment $23.51 (range $4.22 – $32.99)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CELESTE RODRIGUEZ BARTELT PT

Physical Therapist

3770 8TH ST SW, SUITE A
ALTOONA, IA 50009

Polk County (515) 967-5025

ALYSSA LAST OTR/L

Occupational Therapist (Pediatrics)