John West Day, MD
NPI 1447291992ActiveIndividual· Psychiatry & Neurology, Neuromuscular Medicine· Stanford, CA
Psychiatry & Neurology, Neuromuscular Medicine (MD) in Stanford, California, trained at University of Minnesota Medical School (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $588,351 for 39 claims, against $5,630 paid for services in 2024. F. Hoffmann-La Roche Ag was the largest of 7 companies reporting payments in 2025, $21,660 in all, mostly consulting fees.
Overview
| NPI | 1447291992 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 8, 2006 |
| Last updated in NPPES | Nov 9, 2023 |
| Certified by provider | Nov 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neuromuscular Medicine Primary | 2084N0008X | G52734 | CA |
| Psychiatry & Neurology, Neurology | 2084N0400X | G52734 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 37 |
|---|---|
| Services billed | 53 across 9 procedure codes |
| Paid by Medicare | $5,630 |
Part D prescriptions in 2024
| Prescriptions (claims) | 39 · 53 30-day fills |
|---|---|
| Total drug cost | $588,351 |
| Generic share | 41% of claims |
Education and affiliations
| Medical school | University of Minnesota Medical School |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$21,660 · 11 payments from 7 companies
- 2024$14,012 · 6 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| F. Hoffmann-La Roche Ag | $5,848 | 3 |
| Genzyme Corporation | $3,975 | 2 |
| Sarepta Therapeutics, Inc. | $3,475 | 2 |
| Novartis Pharma Ag | $3,362 | 1 |
| Sanofi US Services Inc. | $2,725 | 1 |
What the 2025 payments were for
- Consulting Fee$20,309 · 9 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$1,250 · 1 payment
- Food and Beverage$100.20 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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