NPPES file of Aug 9, 2026

Matthew F. Larsen, DO

Child & Adolescent Psychiatry Physician · Idaho Falls, ID

Matthew F. Larsen, DO is a child & adolescent psychiatry physician with a practice address in Idaho Falls, Idaho, and NPI 1831413681, issued on Mar 23, 2010. Check the license (Idaho O-0856, as entered in NPPES) on the Idaho Board of Medicine; 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
1831413681
Name
Matthew F. Larsen
Credential
DO
Primary taxonomy
Child & Adolescent Psychiatry Physician 2084P0804X
License number
O-0856 ID
Self-reported in NPPES; status is on the state search
Practice location
2001 S Woodruff Ave Ste 9, Idaho Falls, ID 83404
Phone
(208) 419-3002
Enumerated
Mar 23, 2010
Record last updated
Oct 14, 2022
Fax
(208) 656-5652
Medicare enrollment
Enrolled (PECOS I20150810000555); accepts Medicare assignment
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.
Download card Updates feed

Also registered at 2001 S Woodruff Ave Ste 9

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

  1. Kade Anderson, P.A.Psychiatric/Mental Health Clinical Nurse Specialist1699043315
  2. Jamesen Birkel, MSN, APRNPsychiatric/Mental Health Nurse Practitioner1992327738
  3. Brandon Borchman, PSY.D.Psychologist1790144657
  4. Rachel Butikofer, APRN-CNPPsychiatric/Mental Health Nurse Practitioner1518703073
  5. Brent Ellsworth, PA-CPhysician Assistant1831412063
  6. Jared John, PSYSchool Psychologist1164300778

Verify Matthew F. Larsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIdaho Board of Medicine
    Search for license O-0856    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 Idaho 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

2.8 times the Medicare Part D claims of the average child & adolescent psychiatry physician in 2024

1,408 Medicare Part D claims for 85 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.

  1. Matthew Larsen1,408
  2. Specialty average504

Most prescribed

  1. Fluoxetine Hcl122 claims
  2. Clonazepam79 claims
  3. Trazodone Hcl78 claims
  4. Sertraline Hcl69 claims
  5. Bupropion Xl64 claims
  6. Hydroxyzine Hcl63 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

  1. Ascend LLCIdaho Falls, ID

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

Child & Adolescent Psychiatry Physician providers in Idaho

There are 19 child & adolescent psychiatry physician records in Idaho.

All 19 in Idaho → Every provider in Idaho Falls →

Other child & adolescent psychiatry physician records in Idaho

  1. Lauren Boydston, MDCoeur D Alene, ID1356454359
  2. Susan Bunnell, MDIdaho Falls, ID1346216975
  3. Aaron Crum, M.D.Boise, ID1588000996
  4. Ninon Germain Collet, M.D.Boise, ID1588705560
  5. Paula Griffith, M.D.Twin Falls, ID1013336197
  6. Kristina Harrington, MDBoise, ID1407887623
  7. Tamara Helfer, M.D.Boise, ID1962663633
  8. John Helsell, MDCoeur D Alene, ID1609915644
  9. Jesse Hinckley, MD, PHDIdaho Falls, ID1598151508
  10. Jeffrey Kovnick, M.D.Ketchum, ID1770701609

Common questions

What is Matthew F. Larsen, DO's NPI number?

Matthew F. Larsen, DO's National Provider Identifier (NPI) is 1831413681, issued on Mar 23, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Matthew F. Larsen, DO located?

The NPPES record lists a practice address at 2001 S Woodruff Ave Ste 9, Idaho Falls, ID, 83404. Phone: (208) 419-3002. Providers update this record themselves, so call before visiting.

How can I verify Matthew F. Larsen, DO's license?

NPPES lists Idaho license number O-0856, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Matthew F. Larsen, DO prescribe under Medicare Part D?

In 2024, Matthew F. Larsen, DO had 1,408 Medicare Part D claims for 85 beneficiaries; the average among child & adolescent psychiatry physician prescribers was 504. 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.