Alexander Mark Papanastassiou, M.D.
NPI 1659321230ActiveIndividual· Neurological Surgery· San Antonio, TX
Neurological Surgery (M.D.) in San Antonio, Texas, trained at University of California, San Francisco School of Medicine (class of 2002). Mostly services rather than prescriptions: Medicare paid $47,345 for 85 patients in 2024, with only 30 Part D claims. Insightec,inc was the largest of 4 companies reporting payments in 2025, $1,601 in all, mostly food and beverage.
Overview
| NPI | 1659321230 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 12, 2006 |
| Last updated in NPPES | Feb 27, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | N6559 | TX |
| Neurological Surgery | 207T00000X | 227755 | MA |
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 (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 85 |
|---|---|
| Services billed | 130 across 34 procedure codes |
| Paid by Medicare | $47,345 |
Part D prescriptions in 2024
| Prescriptions (claims) | 30 · 30 30-day fills |
|---|---|
| Patients | 25 |
| Total drug cost | $328.17 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical group
- University of Texas Health Science Center at San AntonioSan Antonio, TX · 1,297 clinicians
Hospital affiliations
- Baptist Medical CenterSan Antonio, TX
- Methodist HospitalSan Antonio, TX
- University Health SystemSan Antonio, TX
- Ut Health San Antonio Multispecialty & Research HoSan Antonio, TX
Industry payments (Open Payments)
- 2025$1,601 · 15 payments from 4 companies
- 2024$2,438 · 17 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Insightec,inc | $1,251 | 11 |
| Boston Scientific Corporation | $140.53 | 1 |
| Livanova USA, Inc. | $130.64 | 1 |
| Medtronic, Inc. | $78.60 | 2 |
What the 2025 payments were for
- Food and Beverage$903.99 · 14 payments
- Travel and Lodging$696.80 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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