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KARISSA WALKER ARNP
NPI 1710645718
Nurse Practitioner - Pediatrics in West Des Moines, IA

Active since December 07, 2021PECOS Enrolled
6000 UNIVERSITY AVE STE 101, WEST DES MOINES, IA 50266(515) 241-2600 Get Directions Write a Review

NPPES record last updated: December 7, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Karissa Walker Arnp NPPES

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

KARISSA WALKER ARNP (NPI 1710645718) is an individual pediatrics provider in West Des Moines, Iowa, licensed in Iowa (C166585) and active in the NPI registry since December 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1710645718
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameKARISSA WALKERCredential: ARNP
Location Address6000 UNIVERSITY AVE STE 101West Des Moines, IA 50266-8201
Mailing Address6000 University Ave Ste 101West Des Moines, IA 50266-8201
Phone(515) 241-2600
Sole ProprietorNo
Enumeration DateDecember 7, 2021
NPPES CertifiedDecember 7, 2021
✔ NPI 1710645718 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in IA · C166585
6000 UNIVERSITY AVE STE 101, West Des Moines, IA 50266
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, Wellmark Health Plan of Iowa, Inc..Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Karissa Walker Arnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Karissa Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Iowa Physicians Clinic Medical Foundation
0.5 mi
General Practice
1776 W LAKES PKWY STE 400
West Des Moines, IA 50266
  • Reassigned Medicare billing, Iowa enrollment
  • 1,506 clinicians in this Medicare group
NPI 1366425274 (515) 471-9300

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50266 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 6

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

MRS. MELISSA ANN COWAN ARNP
Nurse Practitioner (Family)
6000 UNIVERSITY AVE STE 101
WEST DES MOINES, IA 50266
Dallas County (515) 241-2600
MOLLY ANN BARNES ARNP
Nurse Practitioner (Family)
6000 UNIVERSITY AVE STE 101
WEST DES MOINES, IA 50266
Dallas County (515) 241-2600
MRS. ELIZABETH MAE DODGE PA-C
Physician Assistant
6000 UNIVERSITY AVE STE 101
WEST DES MOINES, IA 50266
Dallas County (515) 241-2320
BRETT STEWART PA
Physician Assistant
6000 UNIVERSITY AVE STE 101
WEST DES MOINES, IA 50266
Dallas County (515) 241-2600
ALISSA JO HERRICK NP-C
Nurse Practitioner (Family)
6000 UNIVERSITY AVE STE 101
WEST DES MOINES, IA 50266
Dallas County (515) 241-2600
MRS. SAMANTHA BRIANNE BANZHAF PA-C
Physician Assistant
6000 UNIVERSITY AVE STE 101
WEST DES MOINES, IA 50266
Dallas County (515) 241-2600

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 Karissa Walker's NPI number?

The NPI number for Karissa Walker is 1710645718. It was assigned to this individual provider in the NPPES registry on December 7, 2021.

Where is Karissa Walker located?

Karissa Walker practices at 6000 University Ave Ste 101, West Des Moines, IA 50266. The listed phone number is (515) 241-2600.

What is Karissa Walker's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Karissa Walker enrolled in Medicare?

Yes. Karissa Walker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Karissa Walker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karissa Walker reassigns Medicare benefits to Iowa Physicians Clinic Medical Foundation (West Des Moines, IA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Karissa Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karissa Walker accept?

Health plans from Oscar Insurance Company and Wellmark Health Plan of Iowa, Inc. list Karissa Walker as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Karissa Walker was last updated on December 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.