Christopher Marquart
Neurological Surgery · Muskegon, MINPI 1790728798
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 93.4% of the total across 159 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 34 manufacturers, the largest accounting for just 18.2% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2019 at $1,014 and has fallen 84.2% since, to $160 in 2023. That places this record below the midpoint for neurological surgery clinicians in MI, where the typical reported total is $2,563.
Across 159 payments — averaging $19.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- EMD Serono, Inc.$571
- Boston Scientific$294
- Irras USA, Inc.$208
- Johnson & Johnson$171
- AbbVie$151
- Lundbeck LLC$137
- plus $2K from 28 others
What the payments were for
- Speaking & faculty fees$2087%
- Food & beverage$2,92893%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| EMD Serono, Inc. | 38 | $571 |
| Boston Scientific | 16 | $294 |
| Irras USA, Inc. | 1 | $208 |
| Johnson & Johnson(2 entities) | 6 | $171 |
| AbbVie(2 entities) | 8 | $151 |
| Lundbeck LLC | 6 | $137 |
| Amgen | 8 | $130 |
| Sanofi | 6 | $110 |
| UCB, Inc. | 4 | $102 |
| DJO, LLC | 2 | $100 |
| Teva Pharmaceuticals USA, Inc. | 5 | $89 |
| Eisai Inc. | 5 | $84 |
| Greenwich Biosciences, Inc. | 3 | $83 |
| AstraZeneca | 4 | $83 |
| Biogen | 6 | $78 |
| Bristol Myers Squibb | 5 | $74 |
| Pfizer | 4 | $69 |
| MDD US Operations, LLC | 4 | $59 |
| Upsher-smith Laboratories LLC | 3 | $58 |
| Neurelis, Inc. | 4 | $54 |
| E.r. Squibb & Sons, L.L.C. | 2 | $51 |
| Surgalign Spine Technologies, Inc. | 2 | $44 |
| Pacira Pharmaceuticals Incorporated | 1 | $38 |
| Nevro Corp. | 1 | $38 |
| Medtronic(2 entities) | 2 | $36 |
| Integra Lifesciences Corporation | 2 | $35 |
| Kyowa Kirin, Inc. | 2 | $33 |
| Abbott | 2 | $29 |
| Sunovion Pharmaceuticals Inc. | 2 | $29 |
| Jazz Pharmaceuticals Inc. | 1 | $24 |
| Avanir Pharmaceuticals, Inc. | 1 | $22 |
| Impel Pharmaceuticals Inc. | 1 | $22 |
| Arbor Pharmaceuticals, Inc. | 1 | $15 |
| CSL Behring | 1 | $15 |
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.
- IRRASflow$208
How this compares
$3,136 in reported general payments places this provider in the 50th percentile of 256 neurological surgery providers in Michigan.
Other neurological surgery in Muskegon
- Frank LamarcaAnn Arbor$4.8M
- Justin SingerGrand Rapids$944K
- Jayant JagannathanTroy$685K
- Timothy SpencerBattle Creek$543K
- Daniel FahimRoyal Oak$525K
- Daniel OrringerAnn Arbor$500K
- Vittorio MorrealeShelby Twp$439K
- Noojan KazemiAnn Arbor$406K
- Azam BasheerDetroit$405K
- Sonia EdenDetroit$329K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.