NPPES file of Aug 9, 2026

Larissa K. Halvorson, APRN, CNP

Nurse Practitioner · Mankato, MN

Larissa K. Halvorson, APRN, CNP is a nurse practitioner with a practice address in Mankato, Minnesota, and NPI 1861193930, issued on Mar 15, 2023. Check the license (Minnesota 10188, as entered in NPPES) with the Minnesota 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
1861193930
Name
Larissa K. Halvorson
Credential
APRN, CNP
Primary taxonomy
Nurse Practitioner 363L00000X
License numbers
10188 MN
2330422 MN
Self-reported in NPPES; status is on the state search
Practice location
1025 Marsh St, Mankato, MN 56001
Phone
(507) 625-4031
Enumerated
Mar 15, 2023
Record last updated
Sep 6, 2024
Medicare enrollment
Enrolled (PECOS I20230512002037); 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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Also registered at 1025 Marsh St

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

  1. Afaf Abdulbaki, PHARM.D.Ambulatory Care Pharmacist1871953372
  2. Vyoma Acharya, M.D.Psychiatry Physician1235576406
  3. Ava Adams-Morris, MDFamily Medicine Physician1356326284
  4. Shantosh Adhikari Sharma, M.D.Diagnostic Radiology Physician1689036337
  5. Kaitlin Ahlskog, PA-CPhysician Assistant1649638883
  6. Ebtihal Ahmed, MBBSPediatrics Physician1235653452

Verify Larissa K. Halvorson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
    Search for license 10188
    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 Minnesota 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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69% fewer Medicare Part D claims than the average nurse practitioner in 2024

339 Medicare Part D claims for 140 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Larissa Halvorson339
  2. Specialty average1,109

Most prescribed

  1. Fluticasone Propionate49 claims
  2. Omeprazole28 claims
  3. Ciprofloxacin Hcl24 claims
  4. Famotidine24 claims
  5. Mometasone Furoate24 claims
  6. Pantoprazole Sodium23 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: $75.67

5 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. 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. Larissa Halvorson$75.67
  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 one group practice

  1. Mankato Clinic LtdMankato, MN

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

Larissa K. Halvorson among 2,582 nurse practitioner records in Minnesota

Larissa K. Halvorson, APRN, CNP is one of 2,582 nurse practitioner records with a practice address in Minnesota. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 86% of them.

  • NPI issued2023 · 86% of these records are older, 10% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2023 · median 2017 among the 1,655 with a school on file
  • Record last updated2024 · 53% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

62 nurse practitioner records list a practice address in Mankato

They are 62 of the 2,079 NPPES records with a practice address in Mankato, and 2,582 nurse practitioner records in Minnesota.

The 8 nurse practitioner records with the nearest ZIP codes

  1. Susan Bauman, RN NPMankato, MN 560011114906120
  2. Virginia Clementson, APRN-CNPMankato, MN 560011114997004
  3. Sarah Davis, APRN, CNPMankato, MN 560011083932487
  4. Darci Griffiths, APRNMankato, MN 560011124251194
  5. Susan Haugh, NPMankato, MN 560011609097567
  6. Natalie Hoppe, NPMankato, MN 560011295718807
  7. Marlene Jilek, RN NPMankato, MN 560011376521393
  8. Donna Lewis, FNPMankato, MN 560011356593966

Common questions

What is Larissa K. Halvorson, APRN, CNP's NPI number?

Larissa K. Halvorson, APRN, CNP's National Provider Identifier (NPI) is 1861193930, issued on Mar 15, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Larissa K. Halvorson, APRN, CNP located?

The NPPES record lists a practice address at 1025 Marsh St, Mankato, MN, 56001. Phone: (507) 625-4031. Providers update this record themselves, so call before visiting.

How can I verify Larissa K. Halvorson, APRN, CNP's license?

NPPES lists Minnesota license number 10188, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity only.

How much does Larissa K. Halvorson, APRN, CNP prescribe under Medicare Part D?

In 2024, Larissa K. Halvorson, APRN, CNP had 339 Medicare Part D claims for 140 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.