Ziv Williams, MD
NPI 1093705782ActiveIndividual· Neurological Surgery· Boston, MA
Neurological Surgery (MD) in Boston, Massachusetts, trained at Stanford University School of Medicine (class of 1999). Mostly services rather than prescriptions: Medicare paid $66,052 for 103 patients in 2024, with only 23 Part D claims. Daiichi Sankyo Inc. reported $149.12 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1093705782 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2005 |
| Last updated in NPPES | Aug 14, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | 216555 | MA |
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 - Neurosurgery (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 103 |
|---|---|
| Services billed | 209 across 34 procedure codes |
| Paid by Medicare | $66,052 |
Part D prescriptions in 2024
| Prescriptions (claims) | 23 · 23 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $196.76 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical group
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
Hospital affiliations
- Brigham and Women's HospitalBoston, MA
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
- North Shore Medical Center -Salem, MA
Industry payments (Open Payments)
- 2025$149.12 · 1 payment from 1 company
- 2024$302.00 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $149.12 | 1 |
What the 2025 payments were for
- Food and Beverage$149.12 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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