NPPES file of Aug 9, 2026

Emma Koester, ARNP

Nurse Practitioner · Waterloo, IA

Emma Koester, ARNP is a nurse practitioner with a practice address in Waterloo, Iowa, and NPI 1487480778, issued on Sep 12, 2024. Check the license (Iowa A181288, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1487480778
Name
Emma Koester
Credential
ARNP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
A181288 IA
Self-reported in NPPES; status is on the state search
Practice location
1631 Logan Ave, Waterloo, IA 50703
Phone
(319) 833-5381
Enumerated
Sep 12, 2024
Record last updated
Apr 25, 2025
Fax
(319) 833-5386
Medicare enrollment
Enrolled (PECOS I20241002000427); 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 1631 Logan Ave

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

  1. Robert Bartelt, MDOrthopaedic Surgery Physician1851411532
  2. Mitchell Fonley, PTPhysical Therapist1992758163
  3. Mark Gorsche, M.D.Orthopaedic Surgery Physician1356789390
  4. Thomas Gorsche, MDOrthopaedic Surgery Physician1568416196
  5. Raymond Harrington, PTPhysical Therapist1932152733
  6. Megan O'Neal, ARNPNurse Practitioner1689158040

Verify Emma Koester 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 A181288    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Iowa Physicians Clinic Medical FoundationWaterloo, IA

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

Emma Koester among 1,294 nurse practitioner records in Iowa

Emma Koester, 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 2024, is newer than 90% of them.

  • NPI issued2024 · 90% of these records are older, 6% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2024 · median 2018 among the 873 with a school on file
  • Record last updated2025 · 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).

96 nurse practitioner records list a practice address in Waterloo

They are 96 of the 1,512 NPPES records with a practice address in Waterloo, and 1,294 nurse practitioner records in Iowa.

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

The 8 nurse practitioner records with the nearest ZIP codes

  1. Mary Ann Amend, ARNPWaterloo, IA 507031659312254
  2. Paula Anderson, ARNPWaterloo, IA 507031992744569
  3. Esther Bahlmann, NPWaterloo, IA 507031740265115
  4. Michele Friedman, A.R.N.P.Waterloo, IA 507031508844465
  5. Sommer Grant, ARNPWaterloo, IA 507031235116153
  6. Kari Haislet, ARNPWaterloo, IA 507031235182627
  7. Patricia Harvey, APRN, FNP-CWaterloo, IA 507031891709952
  8. Kelly Hassman, ARNPWaterloo, IA 507031073719738

Common questions

What is Emma Koester, ARNP's NPI number?

Emma Koester, ARNP's National Provider Identifier (NPI) is 1487480778, issued on Sep 12, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Emma Koester, ARNP located?

The NPPES record lists a practice address at 1631 Logan Ave, Waterloo, IA, 50703. Phone: (319) 833-5381. Providers update this record themselves, so call before visiting.

How can I verify Emma Koester, ARNP's license?

NPPES lists Iowa license number A181288, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity 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.