Matthew F. Larsen, DO
NPI 1831413681ActiveIndividual· Psychiatry & Neurology, Child & Adolescent Psychiatry· Idaho Falls, ID
Psychiatry & Neurology, Child & Adolescent Psychiatry (DO) with Ascend LLC, practicing in Idaho Falls, Idaho. Their prescriptions cost Medicare Part D more than their services did: $99,060 for 1,408 claims, against $10,844 paid for services in 2024. Janssen Pharmaceuticals, Inc was the largest of 3 companies reporting payments in 2025, $69.69 in all, mostly food and beverage.
Overview
| NPI | 1831413681 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Mar 23, 2010 |
| Last updated in NPPES | Oct 14, 2022 |
| Certified by provider | Oct 14, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Child & Adolescent Psychiatry Primary | 2084P0804X | O-0856 | ID |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Psychiatry (ID) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 45 |
|---|---|
| Services billed | 134 across 6 procedure codes |
| Paid by Medicare | $10,844 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,408 · 1,783 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $99,060 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Ascend LLCIdaho Falls, ID · 8 clinicians
Industry payments (Open Payments)
- 2025$69.69 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Pharmaceuticals, Inc | $33.65 | 2 |
| Janssen Scientific Affairs, LLC | $19.50 | 1 |
| Supernus Pharmaceuticals, Inc. | $16.54 | 1 |
What the 2025 payments were for
- Food and Beverage$69.69 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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