NPPES file of Aug 9, 2026

Jeffrey D. Larsen, MD

Internal Medicine Physician · River Falls, WI

Jeffrey D. Larsen, MD is an internal medicine physician with a practice address in River Falls, Wisconsin, and NPI 1104819622, issued on Aug 30, 2005. Check the license (Wisconsin 37621, as entered in NPPES) on the Wisconsin Medical Examining Board; 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
1104819622
Name
Jeffrey D. Larsen
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
37621 WI
Self-reported in NPPES; status is on the state search
Practice location
319 S Main St, River Falls, WI 54022
Phone
(715) 425-6701
Enumerated
Aug 30, 2005
Record last updated
Aug 7, 2023
Medicaid ID
32225000 WI
Medicare enrollment
Enrolled (PECOS I20100715000089); accepts Medicare assignment
Medical or professional school
University Of Minnesota Medical School, 1988
Telehealth
Offers telehealth (CMS)
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 319 S Main St

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

  1. Christina Atkinson, MDFamily Medicine Physician1497332282
  2. Elizabeth Francis, PHARMDPharmacist1316781453
  3. Kurt Helmrick, PAPhysician Assistant1972596476
  4. Hillary Meyer, CNPFamily Nurse Practitioner1871102335
  5. Amber Morgan, MDPediatrics Physician1447479779
  6. Benjamin Morgan, MDNephrology Physician1750505913

Verify Jeffrey D. Larsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 37621
    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
Open the Wisconsin 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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2.2 times the Medicare Part D claims of the average internal medicine physician in 2024

6,947 Medicare Part D claims for 501 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 132 claims were for opioids.

  1. Jeffrey Larsen6,947
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium594 claims
  2. Amlodipine Besylate365 claims
  3. Lisinopril250 claims
  4. Metoprolol Succinate243 claims
  5. Levothyroxine Sodium209 claims
  6. Omeprazole172 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: $13.49

1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jeffrey Larsen$13.49
  2. Specialty average$1,303.06

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

Bills Medicare through 3 group practices

  1. Allina Health SystemRiver Falls, WI
  2. Fairview ClinicsRiver Falls, WI
  3. Fairview Express CareHudson, WI

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

Jeffrey D. Larsen among 2,078 internal medicine physician records in Wisconsin

Jeffrey D. Larsen, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 91% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated1988 · median 2002 among the 1,098 with a school on file
  • Record last updated2023 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Internal Medicine Physician providers in Wisconsin

There are 2,078 internal medicine physician records in Wisconsin.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Carl Hansen, M.D.Saint Croix Falls, WI 540241932210317
  2. James Kravig, M.D.Saint Croix Falls, WI 540241063524403
  3. David Stevens, M.D.Saint Croix Falls, WI 540241740382548
  4. James Wallace, M.D.Saint Croix Falls, WI 540241902908718
  5. Pradeep Wardhan, M.D.Saint Croix Falls, WI 540241417199159
  6. Jacqueline Dsouza, M.D.Hudson, WI 540161740211473
  7. David Hess, M.D.Hudson, WI 540161871029116
  8. Leslie Surbeck, MDHudson, WI 540161487820932

Common questions

What is Jeffrey D. Larsen, MD's NPI number?

Jeffrey D. Larsen, MD's National Provider Identifier (NPI) is 1104819622, issued on Aug 30, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Jeffrey D. Larsen, MD located?

The NPPES record lists a practice address at 319 S Main St, River Falls, WI, 54022. Phone: (715) 425-6701. Providers update this record themselves, so call before visiting.

How can I verify Jeffrey D. Larsen, MD's license?

NPPES lists Wisconsin license number 37621, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jeffrey D. Larsen, MD prescribe under Medicare Part D?

In 2024, Jeffrey D. Larsen, MD had 6,947 Medicare Part D claims for 501 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.