Mark Liker, MD
Neurological Surgery · Los Angeles, CANPI 1407806292
Payments from drug & device makers
Across 275 payments — averaging $131.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Spinal Elements, Inc.$11K
- Clariance, Inc.$11K
- Medtronic$4K
- Integra Lifesciences Corporation$3K
- Integrity Implants Inc. Dba Accelus$2K
- Boston Scientific$2K
- plus $4K from 28 others
What the payments were for
- Consulting fees$9,25026%
- Travel & lodging$14,75141%
- Food & beverage$12,02533%
- Education$2161%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Spinal Elements, Inc. | 22 | $11,125 |
| Clariance, Inc. | 9 | $11,070 |
| Medtronic(2 entities) | 59 | $3,586 |
| Integra Lifesciences Corporation | 42 | $2,962 |
| Integrity Implants Inc. Dba Accelus | 15 | $1,854 |
| Boston Scientific | 52 | $1,671 |
| Globus Medical(2 entities) | 15 | $821 |
| Abbott | 19 | $655 |
| Integrity Implants Inc. | 2 | $621 |
| Neo Spine USA, Inc. | 5 | $312 |
| Si-bone, Inc. | 5 | $300 |
| Nexxt Spine LLC | 2 | $256 |
| Cerapedics Inc. | 2 | $198 |
| Spineart USA Inc | 1 | $67 |
| Welcony Inc. | 1 | $66 |
| Stryker | 2 | $65 |
| Highridge Medical LLC | 3 | $62 |
| Titan Spine, LLC | 1 | $56 |
| Neuronetics, Inc. | 1 | $43 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $42 |
| CTL Medical Corporation | 2 | $40 |
| Centinel Spine, LLC | 1 | $38 |
| Inspire Medical Systems, Inc. | 2 | $38 |
| Xtant Medical Inc | 1 | $34 |
| Zimmer Biomet | 1 | $34 |
| GE HealthCare | 1 | $33 |
| Alphatec Spine, Inc | 1 | $32 |
| Merz North America, Inc. | 1 | $31 |
| Johnson & Johnson | 1 | $29 |
| Surgalign Spine Technologies, Inc. | 1 | $28 |
| Arbor Pharmaceuticals, Inc. | 1 | $24 |
| Merck | 1 | $18 |
| Spineology Inc. | 1 | $17 |
| Mallinckrodt Enterprises LLC | 1 | $12 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- Idys-ALIF$10,487
- Katana/ Karma$6,500
- Medical Device$1,819
- FlareHawk$1,755
- KATANA$1,750
- CODMAN CERTAS$1,295
- CUSA CLARITY$1,295
- ACTIVA$1,042
- STEALTHSTATION S8 PLATFORM$859
- DURAGEN$735
- DURASEAL EXACT$735
- CODMAN HAKIM PRECISION VALVE$735
- DURASEAL EXACT SPINAL SEALANT SYSTEM$561
- May Plus Discussion$500
- CODMAN HAKIM$409
- GENERAL PAIN MANAGEMENT$390
- DURAGEN DURAL GRAFT MATRIX$386
- Idys-LLIF 3DTi$276
- Idys-ALIF ZP 3DTi$273
- Infinity DBS Pulse Generators$272
How this compares
$36,241 in reported general payments places this provider in the 75th percentile of 773 neurological surgery providers in California.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other neurological surgery in Los Angeles
- Larry KhooLos Angeles$3M
- Linda LiauLos Angeles$1.5M
- Aaron Cohen-GadolLos Angeles$1.3M
- Geoffrey ColbyLos Angeles$1.1M
- Langston HollyLos Angeles$846K
- Carl LauryssenLos Angeles$710K
- Adam MamelakLos Angeles$678K
- Martin PhamLos Angeles$671K
- Vivek MehtaLos Angeles$528K
- Patrick HsiehLos Angeles$419K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.