Menarvia Gaddis, MD
Neurological Surgery · Jackson, MSNPI 1407173453
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (39.1%), travel and lodging and consulting fees — rather than concentrated in one kind of arrangement. 36 manufacturers reported payments, led by Corelink, LLC at 43.9% of the total. Reporting peaked in 2023 at $8,107 and has fallen 81.9% since, to $1,465 in 2025. Among neurological surgery clinicians in MS with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 272 payments — averaging $84.38 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Corelink, LLC$10K
- Zavation Medical Products, LLC$10K
- Lundbeck LLC$439
- SK Life Science, Inc.$245
- Merz Pharmaceuticals, LLC$239
- Acadia Pharmaceuticals Inc$162
- plus $2K from 30 others
What the payments were for
- Consulting fees$5,81325%
- Travel & lodging$8,05835%
- Food & beverage$8,98039%
- Gifts$1000%
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 |
|---|---|---|
| Corelink, LLC | 104 | $10,073 |
| Zavation Medical Products, LLC | 41 | $9,888 |
| Lundbeck LLC | 28 | $439 |
| SK Life Science, Inc. | 9 | $245 |
| Merz Pharmaceuticals, LLC | 8 | $239 |
| Acadia Pharmaceuticals Inc | 7 | $162 |
| UCB, Inc. | 6 | $159 |
| Otsuka America Pharmaceutical, Inc. | 6 | $147 |
| AstraZeneca | 5 | $146 |
| Biogen | 5 | $132 |
| MDD US Operations, LLC | 5 | $114 |
| Surgalign Spine Technologies, Inc. | 3 | $100 |
| Catalyst Pharmaceuticals, Inc. | 4 | $100 |
| Argenx US, Inc. | 4 | $98 |
| Olympus America Inc. | 1 | $93 |
| CSL Behring | 3 | $73 |
| Amneal Pharmaceuticals LLC | 4 | $71 |
| Sumitomo Pharma America, Inc. | 3 | $65 |
| Eisai Inc. | 2 | $58 |
| Kyowa Kirin, Inc. | 2 | $54 |
| ALON Medical Technology | 1 | $51 |
| Neurelis, Inc. | 2 | $50 |
| AbbVie | 2 | $48 |
| Teva Pharmaceuticals USA, Inc. | 2 | $47 |
| Lilly USA, LLC | 3 | $45 |
| Kls-martin L.p. | 2 | $36 |
| Convatec Inc. | 1 | $30 |
| Globus Medical | 1 | $30 |
| Acorda Therapeutics, Inc | 1 | $28 |
| Amgen | 1 | $25 |
| Medtronic | 1 | $24 |
| Amarin Pharma, Inc. | 1 | $20 |
| Johnson & Johnson | 1 | $19 |
| Upsher-smith Laboratories LLC | 1 | $17 |
| Spinal Elements, Inc. | 1 | $11 |
| Novo Nordisk | 1 | $11 |
How this compares
$22,951 in reported general payments places this provider in the 90th percentile of 54 neurological surgery providers in Mississippi.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 46 | $646 |
| Cyclobenzaprine Hcl | 34 | $162 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 17 | $70 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Jackson
- Allison StricklandJackson$75K
- Jason StacyJackson$28K
- Brandon BurnsedJackson$7K
- Andrew SmithJackson$5K
- Haynes HarkeyJackson$5K
- Kathryn LucasJackson$4K
- Roberto Rey DiosJackson$4K
- Bryan GaspardJackson$3K
- John LanconJackson$3K
- Muhammad ChohanJackson$3K
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.