Margaret Sarah Helen Ferris, MD
NPI 1477917565ActiveIndividual· Psychiatry & Neurology, Clinical Neurophysiology· Stanford, CA
Psychiatry & Neurology, Clinical Neurophysiology (MD) in Stanford, California, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $306,302 for 899 claims, against $75,227 paid for services in 2024. Boston Scientific Corporation was the largest of 6 companies reporting payments in 2025, $16,217 in all, mostly speaking and faculty fees.
Overview
| NPI | 1477917565 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 5, 2016 |
| Last updated in NPPES | Nov 13, 2023 |
| Certified by provider | Nov 13, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Clinical Neurophysiology Primary | 2084N0600X | A180872 | CA |
| Psychiatry & Neurology, Neurology | 2084N0400X | A180872 | 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 | 221 |
|---|---|
| Services billed | 972 across 21 procedure codes |
| Paid by Medicare | $75,227 |
Part D prescriptions in 2024
| Prescriptions (claims) | 899 · 1,999 30-day fills |
|---|---|
| Patients | 139 |
| Total drug cost | $306,302 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| 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)
- 2025$16,217 · 40 payments from 6 companies
- 2024$673.73 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $12,299 | 22 |
| Bayer Healthcare Pharmaceuticals Inc. | $1,874 | 11 |
| Orphalan Inc | $1,800 | 1 |
| Insightec,inc | $145.84 | 1 |
| Medtronic, Inc. | $80.14 | 4 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$10,675 · 8 payments
- Travel and Lodging$2,550 · 11 payments
- Honoraria$1,800 · 1 payment
- Food and Beverage$1,192 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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