Sanna Elizabeth Herwald, MD
NPI 1710449111ActiveIndividual· Radiology, Vascular & Interventional Radiology· Stanford, CA
Radiology, Vascular & Interventional Radiology (MD) in Stanford, California, trained at Tufts University School of Medicine (class of 2019). Part D covered 24 prescriptions written in 2024, 100% of them generic. Bard Peripheral Vascular, Inc. was the largest of 4 companies reporting payments in 2025, $161.85 in all, mostly food and beverage.
Overview
| NPI | 1710449111 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 3, 2019 |
| Last updated in NPPES | Sep 29, 2025 |
| Certified by provider | Sep 29, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Vascular & Interventional Radiology Primary | 2085R0204X | A181552 | CA |
| Radiology, Diagnostic Radiology | 2085R0202X | A181552 | CA |
| Radiology, Vascular & Interventional Radiology | 2085R0204X | 86003 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Interventional Radiology (CA); Practitioner - Diagnostic Radiology (WI) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 24 · 24 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $106.95 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Interventional Radiology |
| Secondary specialties | Diagnostic Radiology |
Medical groups
- Stanford Health CareStanford, CA · 3,122 clinicians
- University of Wisconsin Medical Foundation IncMadison, WI · 2,553 clinicians
Hospital affiliations
- Stanford Health CareStanford, CA
- Unitypoint Health - MeriterMadison, WI
- University of Wi Hospitals & Clinics AuthorityMadison, WI
Industry payments (Open Payments)
- 2025$161.85 · 4 payments from 4 companies
- 2024$1,505 · 9 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bard Peripheral Vascular, Inc. | $71.84 | 1 |
| Asahi Intecc USA, Inc. | $46.15 | 1 |
| Terumo Medical Corporation | $24.11 | 1 |
| W. L. Gore & Associates, Inc. | $19.75 | 1 |
What the 2025 payments were for
- Food and Beverage$161.85 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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