Nicholas Wiessner Larsen, M.D.
NPI 1508212663ActiveIndividual· Psychiatry & Neurology, Clinical Neurophysiology· Stanford, CA
Psychiatry & Neurology, Clinical Neurophysiology (M.D.) in Stanford, California, trained at University of Utah School of Medicine (class of 2016). 87 Medicare patients in 2024, $14,393 paid; nearly all of their 100 Part D prescriptions were generic (99%).
Overview
| NPI | 1508212663 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 9, 2016 |
| Last updated in NPPES | Nov 10, 2023 |
| Certified by provider | Nov 10, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Clinical Neurophysiology Primary | 2084N0600X | A155442 | CA |
| Psychiatry & Neurology, Neurology | 2084N0400X | A155442 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neuropsychiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 87 |
|---|---|
| Services billed | 146 across 10 procedure codes |
| Paid by Medicare | $14,393 |
Part D prescriptions in 2024
| Prescriptions (claims) | 100 · 187 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $3,912 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | University of Utah School of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Neuropsychiatry |
| Secondary specialties | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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