Mark Andrew Liker, M.D.
NPI 1407806292ActiveIndividual· Neurological Surgery· Valencia, CA
Neurological Surgery (M.D.) with Usc Care Medical Group Inc and 1 other group, practicing in Valencia, California. Mostly services rather than prescriptions: Medicare paid $132,225 for 252 patients in 2024, with only 28 Part D claims. Clariance, Inc. was the largest of 7 companies reporting payments in 2025, $818.43 in all, mostly food and beverage. Lists Henry Mayo Newhall Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1407806292 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | Apr 29, 2026 |
| Certified by provider | Apr 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | A62368 | 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 | 252 |
|---|---|
| Services billed | 520 across 69 procedure codes |
| Paid by Medicare | $132,225 |
Part D prescriptions in 2024
| Prescriptions (claims) | 28 · 30 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $380.16 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Neurosurgery |
| Telehealth | Offers telehealth |
Medical groups
- Usc Care Medical Group IncLos Angeles, CA · 1,380 clinicians
- Neurosurgical Associates of Los Angeles, Inc.Valencia, CA · 7 clinicians
Hospital affiliations
- Henry Mayo Newhall HospitalValencia, CA
- Keck Hospital of UscLos Angeles, CA
- Northridge Hospital Medical CenterNorthridge, CA
Industry payments (Open Payments)
- 2025$818.43 · 15 payments from 7 companies
- 2024$2,255 · 35 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Clariance, Inc. | $339.27 | 3 |
| Integra Lifesciences Corporation | $251.78 | 6 |
| Medtronic, Inc. | $89.12 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $42.33 | 1 |
| Inspire Medical Systems, Inc. | $37.67 | 2 |
What the 2025 payments were for
- Food and Beverage$818.43 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Neurological Surgery providers in Valencia
- 1134743610
- 1508481391
- 1063893543
- 1316025836
- 1730618752
- 1063048700
- 1407410996
- 1295775807
- 1013370378
- 1790046720
- 1215100805