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Family Practice

Kristi D. Walz, MD

Works at hospitals in Sioux City, IA · Iowa

Summary

Dr. Kristi D. Walz, MD is a family doctor at 1021 Nebraska St, Sioux City, IA 51105. Phone: (712) 252-2477. Accepts Medicare assignment. In 2024, Kristi D. Walz had 103 Original Medicare patients and 982 services. NPI 1144214248. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 1021 Nebraska St, Sioux City, IA 51105 · Directions (1 more location)
  • Phone: (712) 252‑2477
  • Medicare: Accepts Medicare assignment
  • Hospital: St Lukes Regional Medical Center
  • Group practice: Neighborhood Health (+1 more)
  • Medical school: Sanford School Of Medicine Of University Of South Dakota · graduated 1999 (27 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Kristi D. Walz, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Kristi D. Walz accept Medicare assignment?
Yes. Medicare's clinician data says Kristi D. Walz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Kristi D. Walz see?
In 2024, CMS data shows 103 Original Medicare patients and 982 services for Kristi D. Walz. This counts Original Medicare only and measures volume, not quality.
What is Kristi D. Walz's NPI number?
1144214248. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Kristi D. Walz, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients103
Services billed to Medicare982
Different services or procedures62
Participating Medicare providerYes
Average age of these patients66

Most frequent services

  1. Blood test, comprehensive group of blood chemicals (80053)204 services
  2. Hemoglobin a1c level (83036)122 services
  3. Blood test, lipids (cholesterol and triglycerides) (80061)99 services
  4. Complete blood cell count (red cells, white blood cell, platelets), automated test (85027)85 services
  5. Blood test, thyroid stimulating hormone (tsh) (84443)66 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure70%
  • Diabetes36%
  • Anxiety36%
  • Depression34%
  • Arthritis29%

Hospitals where Kristi D. Walz works

Medicare's Facility Affiliation Data lists Kristi D. Walz at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Kristi D. Walz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Kristi D. Walz as a member of these groups (CMS data updated October 2, 2026).

  • Neighborhood Health46 clinicians in the group
  • Siouxland Community Health Center11 clinicians in the group

Specialties

Find other Family Practice doctors in Iowa →

Other family doctors in Sioux City

Clinicians with the same Medicare primary specialty in Sioux City, IA — not a recommendation.

All family doctors in Sioux City →

Other clinicians in Neighborhood Health

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolSanford School Of Medicine Of University Of South Dakota
Graduation year1999 (27 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1144214248
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians