David Gwinn, MD
Orthopaedic Surgery · Frederick, MDNPI 1396708731
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $24,100 of the $33,050 with a category attached, or 72.9%. 19 manufacturers reported payments, led by Spine Wave, Inc. at 57.4% of the total. Reporting peaked in 2019 at $13,628 and has fallen 98.5% since, to $210 in 2025.
Across 109 payments — averaging $303.21 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Spine Wave, Inc.$19K
- Titan Spine, LLC$6K
- Alphatec Spine, Inc$3K
- Zimmer Biomet$2K
- Nevro Corp.$705
- Supreme Orthopedic Systems, LLC$657
- plus $2K from 13 others
What the payments were for
- Consulting fees$24,10073%
- Travel & lodging$4,34313%
- Food & beverage$3,0949%
- Education$1,5135%
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 |
|---|---|---|
| Spine Wave, Inc. | 39 | $18,964 |
| Titan Spine, LLC | 3 | $6,111 |
| Alphatec Spine, Inc | 11 | $2,912 |
| Zimmer Biomet | 10 | $1,697 |
| Nevro Corp. | 14 | $705 |
| Supreme Orthopedic Systems, LLC | 3 | $657 |
| Relievant Medsystems, Inc. | 5 | $518 |
| Arthrex | 3 | $511 |
| Zimvie Inc. | 3 | $277 |
| Stryker | 4 | $189 |
| Globus Medical | 3 | $152 |
| Avanos Medical | 1 | $146 |
| Johnson & Johnson | 3 | $55 |
| Medtronic | 1 | $38 |
| MML US, Inc. | 2 | $34 |
| Misonix Inc | 1 | $33 |
| Orthofix Medical, Inc. | 1 | $22 |
| Intrinsic Therapeutics | 1 | $17 |
| Amgen | 1 | $11 |
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.
- SALVO SPINE SYSTEM$6,200
- nanoLOCK$6,111
- Spinal Implants$5,200
- Other - Miscellaneous$1,860
- Fixation$1,500
- ROSA-Knee$617
- Intracept$462
- Persona$423
- Comprehensive Anatomic$347
- ON-Q* PUMP AND ACCESSORIES$146
- Mobi-C$133
- Comprehensive Reverse$126
- Vital$116
- Omnia$101
How this compares
$33,050 in reported general payments places this provider in the 85th percentile of 378 orthopaedic surgery providers in Maryland.
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 |
|---|---|---|
| Gabapentin | 163 | $1,823 |
| Celecoxib | 12 | $401 |
| Meloxicam | 55 | $266 |
| Diclofenac Sodium | 11 | $150 |
| Cyclobenzaprine Hcl | 31 | $111 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 21 | $104 |
| Methylprednisolone | 16 | $73 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Frederick
- Therlinsie FleurizardFrederick$27K
- Lawrence EnwezeFrederick$24K
- Mark MyersonBaltimore$10.5M
- David DaluryTowson$7.6M
- Anand MurthiBaltimore$3.7M
- Timothy CoddTowson$3.6M
- Khaled KebaishBaltimore$3M
- Michael AinLutherville$1.6M
- Shawn StandardBaltimore$1.4M
- Hamid HassanzadehBethesda$1.1M
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.