Karissa J. Junior, ARNP
Nurse Practitioner · Marshalltown, IA
Karissa J. Junior, ARNP is a nurse practitioner with a practice address in Marshalltown, Iowa, and NPI 1417441999, issued on Jun 19, 2018. Check the license (Iowa A133743, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karissa J. Junior
- Credential
- ARNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- A133743 IA
Self-reported in NPPES; status is on the state search - Practice location
- 802 S Center St, Marshalltown, IA 50158
- Phone
- (641) 844-5200
- Enumerated
- Jun 19, 2018
- Record last updated
- Nov 11, 2024
- Medicare enrollment
- Enrolled (PECOS I20180827002075); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,294 in Iowa → Look up another NPI →
Also registered at 802 S Center St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristin DecookPharmacist1003449505
- Brooke IbelingFamily Nurse Practitioner1396376216
- Jessie Majors, PHARMDPharmacist1689203283
- Ashley Nehman, PHARM DPharmacist1861024028
- Mung PiangPharmacist1023989977
- Nicole Richardson, ARNPFamily Nurse Practitioner1376014993
Verify Karissa J. Junior in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license A133743Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average nurse practitioner in 2024
157 Medicare Part D claims for 129 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Prednisone22 claims
- Diclofenac Sodium13 claims
- Methylprednisolone13 claims
- Azithromycin11 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.
Bills Medicare through one group practice
- Des Moines Orthopaedic Surgeons PCAnkeny, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karissa J. Junior among 1,294 nurse practitioner records in Iowa
Karissa J. Junior, 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 2018, is newer than 55% of them.
- NPI issued2018 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2018 · 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).
15 nurse practitioner records list a practice address in Marshalltown
They are 15 of the 443 NPPES records with a practice address in Marshalltown, and 1,294 nurse practitioner records in Iowa.
All 1,294 in Iowa → Every provider in Marshalltown → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Shannon Appel, ARNPMarshalltown, IA 501581447737143
- Carol Barlow, ARNPMarshalltown, IA 501581225592074
- Claudia Beckwith, N.P.Marshalltown, IA 501581548318272
- Margaret Duffy, ARNPMarshalltown, IA 501581841293503
- Katherine Eaton, ARNPMarshalltown, IA 501581265504138
- Ann Ersland, ARNPMarshalltown, IA 501581407477714
- Taylor FrizzellMarshalltown, IA 501581790565331
- Maggie Hansen, ARNPMarshalltown, IA 501581508670886
Common questions
What is Karissa J. Junior, ARNP's NPI number?
Karissa J. Junior, ARNP's National Provider Identifier (NPI) is 1417441999, issued on Jun 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Karissa J. Junior, ARNP located?
The NPPES record lists a practice address at 802 S Center St, Marshalltown, IA, 50158. Phone: (641) 844-5200. Providers update this record themselves, so call before visiting.
How can I verify Karissa J. Junior, ARNP's license?
NPPES lists Iowa license number A133743, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Karissa J. Junior, ARNP prescribe under Medicare Part D?
In 2024, Karissa J. Junior, ARNP had 157 Medicare Part D claims for 129 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.
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.