Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WALTER L MENDENHALL M.D.
NPI 1194799643
Specialist in Spencer, IA

Q: What is Walter Mendenhall's NPI number?

The NPI number for Walter Mendenhall is 1194799643. It was assigned to this individual provider in the NPPES registry on February 13, 2006.

Q: What is Walter Mendenhall's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Walter Mendenhall was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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 February 13, 2006

1200 1ST AVE E, SUITE B, SPENCER, IA 51301(712) 262-6214(712) 262-6216 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Walter L Mendenhall M.d. NPPES

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

WALTER L MENDENHALL M.D. (NPI 1194799643) is an individual specialist in Spencer, Iowa, licensed in Iowa (20168) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1194799643

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameWALTER L MENDENHALLCredential: M.D.

Location Address1200 1ST AVE E, SUITE BSpencer, IA 51301-4342

Mailing Address1200 1st Ave E, Suite BSpencer, IA 51301-4342 · (712) 262-6214 · Fax (712) 262-6216

Phone(712) 262-6214

Fax(712) 262-6216

Sole ProprietorNo

Enumeration DateFebruary 13, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1194799643 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in IA · 20168

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

1200 1ST AVE E, Spencer, IA 51301

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Other Providers at the Same Location NPPES 20

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

SARAH ELISE JOHNSON

Registered Nurse (Emergency)

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6101

NORTHWEST IOWA UROLOGISTS PC

Specialist

1200 1ST AVE E, SUITE B
SPENCER, IA 51301

Clay County (712) 262-6214

KELLIE PERRY

Physical Therapist

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6189

DR. JAMES ALAN DELPERDANG MD

Emergency Medicine

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6198

RUTH E VETTER OTR/L

Occupational Therapist

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6416

NWIA BONE JOINT AND SPORTS SURGEONS

Physical Therapist

1200 1ST AVE E, SUITE C
SPENCER, IA 51301

Clay County (712) 262-7511

KEVIN D CARLSON ATC/L

Specialist/Technologist (Athletic Trainer)

1200 1ST AVE E, SUITE C
SPENCER, IA 51301

Clay County (712) 262-7511

TESSA ROCKWELL DPT

Physical Therapist

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6189

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Walter Mendenhall's NPI number?

The NPI number for Walter Mendenhall is 1194799643. It was assigned to this individual provider in the NPPES registry on February 13, 2006.

Where is Walter Mendenhall located?

Walter Mendenhall practices at 1200 1st Ave E Suite B, Spencer, IA 51301. The listed phone number is (712) 262-6214.

What is Walter Mendenhall's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Walter Mendenhall was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days 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.