Gus George Halamandaris, MD
NPI 1083621957ActiveIndividual· Neurological Surgery· Salinas, CA
Neurological Surgery (MD) with Monterey Spine and Joint PC and 1 other group, practicing in Salinas, California. 548 Medicare patients in 2024, $583,796 paid; nearly all of their 672 Part D prescriptions were generic (99%). Medtronic, Inc. was the largest of 3 companies reporting payments in 2025, $695.21 in all, mostly food and beverage. Lists Community Hospital of the Monterey Peninsula and 1 other hospital as hospital affiliations.
Overview
| NPI | 1083621957 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 2, 2006 |
| Last updated in NPPES | Aug 17, 2021 |
| Certified by provider | Aug 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | G57889 | 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 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 - Neurosurgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 548 |
|---|---|
| Services billed | 1,726 across 93 procedure codes |
| Paid by Medicare | $583,796 |
Part D prescriptions in 2024
| Prescriptions (claims) | 672 · 696 30-day fills |
|---|---|
| Patients | 210 |
| Total drug cost | $9,074 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Neurosurgery |
Medical groups
- Monterey Spine and Joint PCMonterey, CA · 75 clinicians
- Montage Surgical GroupMonterey, CA · 18 clinicians
Hospital affiliations
- Community Hospital of the Monterey PeninsulaMonterey, CA
- Natividad Medical CenterSalinas, CA
Industry payments (Open Payments)
- 2025$695.21 · 8 payments from 3 companies
- 2024$453.13 · 7 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $509.38 | 5 |
| Zimmer Biomet Holdings, Inc. | $146.73 | 1 |
| Boston Scientific Corporation | $39.10 | 2 |
What the 2025 payments were for
- Food and Beverage$695.21 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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