Yuen Tat So, MD
NPI 1891821401ActiveIndividual· Psychiatry & Neurology, Neuromuscular Medicine· Stanford, CA
Psychiatry & Neurology, Neuromuscular Medicine (MD) in Stanford, California, trained at Yale University School of Medicine (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $959,813 for 111 claims, against $12,973 paid for services in 2024. Ucb, Inc. reported $155.34 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1891821401 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 26, 2007 |
| Last updated in NPPES | Nov 6, 2023 |
| Certified by provider | Nov 6, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neuromuscular Medicine Primary | 2084N0008X | G53824 | CA |
| Psychiatry & Neurology, Clinical Neurophysiology | 2084N0600X | G53824 | CA |
| Psychiatry & Neurology, Neurology | 2084N0400X | G53824 | 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 | 93 |
|---|---|
| Services billed | 173 across 17 procedure codes |
| Paid by Medicare | $12,973 |
Part D prescriptions in 2024
| Prescriptions (claims) | 111 · 198 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $959,813 |
| Generic share | 63% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Neurology |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$155.34 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ucb, Inc. | $155.34 | 2 |
What the 2025 payments were for
- Food and Beverage$137.84 · 1 payment
- Education$17.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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