David Nelles, MD
Orthopaedic Surgery of the Spine · Concord, CANPI 1760710610
Payments from drug & device makers
What this record shows
The money is spread across several categories — travel and lodging (52.7%), food and beverage and consulting fees — rather than concentrated in one kind of arrangement. 14 manufacturers reported payments, led by Spineart USA Inc at 57.8% of the total. Reporting peaked in 2021 at $11,893 and has fallen 92.0% since, to $954 in 2025.
Across 201 payments — averaging $173.83 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Spineart USA Inc$20K
- Corelink, LLC$12K
- Alphatec Spine, Inc$2K
- Medtronic$278
- Globus Medical$62
- Orthofix Medical, Inc.$59
- plus $161 from 8 others
What the payments were for
- Consulting fees$4,95014%
- Travel & lodging$18,42653%
- Food & beverage$11,22632%
- Gifts$1670%
- Entertainment$1710%
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 |
|---|---|---|
| Spineart USA Inc | 111 | $20,207 |
| Corelink, LLC | 49 | $11,855 |
| Alphatec Spine, Inc | 24 | $2,317 |
| Medtronic(2 entities) | 7 | $278 |
| Globus Medical | 1 | $62 |
| Orthofix Medical, Inc. | 1 | $59 |
| Stryker | 1 | $27 |
| Xtant Medical Inc | 1 | $24 |
| Vertex | 1 | $21 |
| Team_makena_llc | 1 | $20 |
| Heron Therapeutics, Inc. | 1 | $19 |
| Spineology Inc. | 1 | $19 |
| Si-bone, Inc. | 1 | $18 |
| Providence Medical Technology, Inc. | 1 | $13 |
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.
- PERLA C$6,146
- Perla TL$3,937
- JULIET TL Ti$1,329
- Scarlet AL-T$809
- Other - Miscellaneous$646
- PRESTIGE LP CERVICAL DISC SYSTEM$124
- PERLA TL - MIS$107
How this compares
$34,939 in reported general payments places this provider in the 55th percentile of 288 orthopaedic surgery of the spine providers in California.
See all orthopaedic surgery of the spine 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Gabapentin | 13 | $102 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery of the spine in Concord
- Hyun BaeSanta Monica$56.8M
- Choll KimSan Diego$4M
- Stacey BedermanOrange$3.7M
- Gregory Mundisla Jolla$3.3M
- Paul SlosarDaly City$3.1M
- Babak Barcohanavan Nuys$2.9M
- Neelakantan AnandLos Angeles$2.9M
- Sanjay KhuranaMarina del Rey$2.3M
- Neville AlleyneOceanside$2.2M
- Rick DelamarterSanta Monica$2.2M
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.