Louis Weimer, M.D.
NPI 1356357404ActiveIndividual· Psychiatry & Neurology, Neurology· New York, NY
Psychiatry & Neurology, Neurology (M.D.) in New York, New York, trained at Emory University School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $2,149,671 for 547 claims, against $90,198 paid for services in 2024. F. Hoffmann-La Roche Ag was the largest of 8 companies reporting payments in 2025, $8,717 in all, mostly consulting fees.
Overview
| NPI | 1356357404 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | Feb 16, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 183480-1 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 278 |
|---|---|
| Services billed | 904 across 26 procedure codes |
| Paid by Medicare | $90,198 |
Part D prescriptions in 2024
| Prescriptions (claims) | 547 · 978 30-day fills |
|---|---|
| Patients | 93 |
| Total drug cost | $2,149,671 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | Emory University School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Trustees of Columbia University in the City of New YorkNew York, NY · 2,296 clinicians
Hospital affiliation
- New York-Presbyterian HospitalNew York, NY
Industry payments (Open Payments)
- 2025$8,717 · 19 payments from 8 companies
- 2024$6,677 · 20 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| F. Hoffmann-La Roche Ag | $8,280 | 4 |
| Alexion Pharmaceuticals, Inc. | $152.93 | 5 |
| Catalyst Pharmaceuticals, Inc. | $78.21 | 2 |
| Argenx US, Inc. | $74.04 | 3 |
| Astrazeneca Pharmaceuticals LP | $47.62 | 2 |
What the 2025 payments were for
- Consulting Fee$8,280 · 4 payments
- Food and Beverage$436.54 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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