Gregory J. Castiglia, MD
NPI 1003891896ActiveIndividual· Neurological Surgery· Williamsville, NY
Neurological Surgery (MD) in Williamsville, New York, trained at Columbia University College of Physicians and Surgeons (class of 1992). 170 Medicare patients in 2024, $80,980 paid; all of their 207 Part D prescriptions were generic. Orthofix Medical, Inc. was the largest of 3 companies reporting payments in 2025, $87.72 in all, mostly food and beverage.
Overview
| NPI | 1003891896 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 14, 2005 |
| Last updated in NPPES | Oct 15, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | 1982201 | NY |
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 - Neurosurgery (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 170 |
|---|---|
| Services billed | 1,842 across 51 procedure codes |
| Paid by Medicare | $80,980 |
Part D prescriptions in 2024
| Prescriptions (claims) | 207 · 207 30-day fills |
|---|---|
| Patients | 97 |
| Total drug cost | $5,200 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Columbia University College of Physicians and Surgeons |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Neurosurgery |
Medical group
- University at Buffalo Neurosurgery IncAmherst, NY · 71 clinicians
Hospital affiliations
- Erie County Medical CenterBuffalo, NY
- Kenmore Mercy HospitalKenmore, NY
- Mercy Hospital of BuffaloBuffalo, NY
- Mount St. Mary's Hospital & Health CenterLewiston, NY
- Sisters of Charity HospitalBuffalo, NY
Other facilities
- McAuley Seton Home Care Corp ChhaHome health agency · Buffalo, NY
Industry payments (Open Payments)
- 2025$87.72 · 3 payments from 3 companies
- 2024$358.86 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Orthofix Medical, Inc. | $44.72 | 1 |
| Depuy Synthes Sales Inc. | $22.24 | 1 |
| Sanara Medtech Inc. | $20.76 | 1 |
What the 2025 payments were for
- Food and Beverage$87.72 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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