NPPES file of Aug 9, 2026

Stacy L. Walker, ARNP

Nurse Practitioner · Ottumwa, IA

Stacy L. Walker, ARNP is a nurse practitioner with a practice address in Ottumwa, Iowa, and NPI 1821012188, issued on Jul 27, 2006. Check the license (Iowa A087201, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821012188
Name
Stacy L. Walker
Credential
ARNP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
A087201 IA
Self-reported in NPPES; status is on the state search
Practice location
522 N Hancock St, Ottumwa, IA 52501
Phone
(641) 683-0800
Enumerated
Jul 27, 2006
Record last updated
Jan 22, 2024
Fax
(641) 683-0801
Medicare enrollment
Enrolled (PECOS I20070306000344); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 1,294 in Iowa → Look up another NPI →

Also registered at 522 N Hancock St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Robert Blommer, MDInternal Medicine Physician1770569717
  2. Kimberly Brown, ARNPFamily Nurse Practitioner1013286020
  3. Paige Caves, DPTPhysical Therapist1043739279
  4. Heather Easton, ARNPFamily Nurse Practitioner1891126975
  5. Florita Henderson, MDInternal Medicine Physician1770711939
  6. Mary Henderson, NP-CFamily Nurse Practitioner1891079257

Verify Stacy L. Walker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license A087201    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Iowa license search

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20% fewer Medicare Part D claims than the average nurse practitioner in 2024

882 Medicare Part D claims for 521 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 23 claims were for opioids.

  1. Stacy Walker882
  2. Specialty average1,109

Most prescribed

  1. Prednisone97 claims
  2. Cephalexin63 claims
  3. Doxycycline Hyclate53 claims
  4. Ciprofloxacin Hcl47 claims
  5. Azithromycin46 claims
  6. Amoxicillin-Clavulanate Potass39 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $40.12

1 payment: food and beverage; the largest payer was Abbott Laboratories. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stacy Walker$40.12
  2. Specialty average$791.64

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Jefferson County HospitalFairfield, IA
  2. Mercy Medical Center-CentervilleOttumwa, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stacy L. Walker among 1,294 nurse practitioner records in Iowa

Stacy L. Walker, ARNP is one of 1,294 nurse practitioner records with a practice address in Iowa. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 77% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2001 · median 2018 among the 873 with a school on file
  • Record last updated2024 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

21 nurse practitioner records list a practice address in Ottumwa

They are 21 of the 405 NPPES records with a practice address in Ottumwa, and 1,294 nurse practitioner records in Iowa.

All 1,294 in Iowa → Every provider in Ottumwa → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Sydney Anderson, DNPOttumwa, IA 525011720635642
  2. Jasmine Benson, ARNPOttumwa, IA 525011982194874
  3. Wanda Besco, ARNPOttumwa, IA 525011568434645
  4. Susie Chambers, ARNPOttumwa, IA 525011881648756
  5. Sheila Kauzlarich, ARNPOttumwa, IA 525011679081327
  6. Jane Matzen, ARNPOttumwa, IA 525011366438681
  7. Pamela Miller, ARNPOttumwa, IA 525011326011867
  8. Sheryl Mulder, ARNP MSN FNPCOttumwa, IA 525011962497438

Common questions

What is Stacy L. Walker, ARNP's NPI number?

Stacy L. Walker, ARNP's National Provider Identifier (NPI) is 1821012188, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stacy L. Walker, ARNP located?

The NPPES record lists a practice address at 522 N Hancock St, Ottumwa, IA, 52501. Phone: (641) 683-0800. Providers update this record themselves, so call before visiting.

How can I verify Stacy L. Walker, ARNP's license?

NPPES lists Iowa license number A087201, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

How much does Stacy L. Walker, ARNP prescribe under Medicare Part D?

In 2024, Stacy L. Walker, ARNP had 882 Medicare Part D claims for 521 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.