Asterios Tsimpas, M.D.
NPI 1093919946ActiveIndividual· Neurological Surgery· Mission Viejo, CA
Neurological Surgery (M.D.) in Mission Viejo, California, licensed in CA, with an NPI issued in June 2007. In 2024 Medicare paid $139,173 for 234 patients, and Part D covered 59 of their prescriptions, 86% of them generic. Medtronic, Inc. was the largest of 11 companies reporting payments in 2025, $5,386 in all, mostly consulting fees. Lists Desert Regional Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1093919946 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 13, 2007 |
| Last updated in NPPES | Sep 28, 2021 |
| Certified by provider | Sep 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | A121207 | CA |
| Radiology, Vascular & Interventional Radiology | 2085R0204X | A121207 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 234 |
|---|---|
| Services billed | 716 across 45 procedure codes |
| Paid by Medicare | $139,173 |
Part D prescriptions in 2024
| Prescriptions (claims) | 59 · 83 30-day fills |
|---|---|
| Patients | 27 |
| Total drug cost | $6,405 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Neurosurgery |
| Secondary specialties | Interventional Radiology |
Hospital affiliations
- Desert Regional Medical CenterPalm Springs, CA
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Providence Mission HospitalMission Viejo, CA
Industry payments (Open Payments)
- 2025$5,386 · 19 payments from 11 companies
- 2024$13,691 · 36 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $2,650 | 2 |
| Exeltis, USA Inc. | $1,440 | 1 |
| Becton, Dickinson and Company | $768.00 | 1 |
| Intrinsic Therapeutics | $168.80 | 2 |
| Imperative Care, Inc | $98.41 | 4 |
What the 2025 payments were for
- Consulting Fee$4,833 · 3 payments
- Food and Beverage$552.66 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other neurosurgeons in Mission Viejo
- 1548439920
- 1659577286
- 1669552808
- 1932349651
- 1205210747
- 1245345834
- 1336794130
- 1447046800
- 1518410216
- 1538713227
- 1770788754
- 1841889961