William Choi, MD
Neurological Surgery · Greenwood Village, CONPI 1093811028
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $58,955 of the $80,640 with a category attached, or 73.1%. CTL Medical Corporation accounts for 71.4% of it on its own, with 33 other manufacturers making up the rest. 2025 is the largest year on record at $57,383, more than ten times the $3,076 reported in 2019.
Across 252 payments — averaging $320.00 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- CTL Medical Corporation$58K
- Alphatec Spine, Inc$7K
- Cerapedics Inc.$6K
- Orthofix Medical, Inc.$2K
- Seaspine Orthopedics Corporation$1K
- Johnson & Johnson$1K
- plus $5K from 28 others
Across 1 payment — averaging $657.03 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Spinal Elements, Inc.$657
What the payments were for
- Consulting fees$58,95573%
- Speaking & faculty fees$1,5002%
- Travel & lodging$10,07912%
- Food & beverage$9,53612%
- Education$650%
- Gifts$5051%
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 |
|---|---|---|
| CTL Medical Corporation | 20 | $57,595 |
| Alphatec Spine, Inc | 76 | $6,865 |
| Cerapedics Inc. | 12 | $6,471 |
| Orthofix Medical, Inc. | 25 | $2,259 |
| Seaspine Orthopedics Corporation | 13 | $1,364 |
| Johnson & Johnson(2 entities) | 29 | $1,213 |
| Stryker | 30 | $1,041 |
| Medical Device Business Services, Inc. | 1 | $900 |
| Integrity Implants Inc. | 3 | $788 |
| Spinal Elements, Inc. | 5 | $390 |
| Kuros Biosciences USA, Inc | 1 | $339 |
| Medtronic(2 entities) | 5 | $292 |
| Arteriocyte Medical Systems, Inc. | 2 | $213 |
| Centinel Spine, LLC | 3 | $147 |
| Zimmer Biomet | 1 | $90 |
| Nanohive Medical LLC | 1 | $78 |
| Spineology Inc. | 2 | $68 |
| Amgen | 3 | $63 |
| Providence Medical Technology, Inc. | 1 | $58 |
| Kerecis Limited | 2 | $46 |
| Highridge Medical LLC | 2 | $45 |
| Avanos Medical | 1 | $42 |
| 4web, Inc. | 1 | $36 |
| BD | 1 | $36 |
| Theragen, Inc. | 1 | $32 |
| Augmedics Inc. | 3 | $30 |
| EBI, LLC | 1 | $27 |
| Baxter Healthcare | 1 | $26 |
| Innovation Technologies Inc | 1 | $23 |
| Alafair Biosciences, Inc. | 1 | $22 |
| Clariance, Inc. | 1 | $13 |
| Expanding Innovations, Inc. | 1 | $12 |
| Lifenet Health | 1 | $11 |
| Biocomposites Inc | 1 | $5 |
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.
- Raphael Pedicle Screw System$56,765
- I-FACTOR PEPTIDE ENHANCED BONE GRAFT$16,176
- Other - Miscellaneous$2,983
- M6-C Artificial Cervical Disc$1,457
- Mariner$897
- INVICTUS OPEN$471
- SafeOp$400
- Spinal$357
- EXPEDIUM$242
- Medical Devices$225
- Novel$183
- Amplia MRI$149
- FIBERGRAFT BG Morsels$123
- Battalion PLIF - PS$117
- Firebird Deformity Correction System$111
- Firebird NXG Spinal Fixation System$111
- Firebird Spinal Fixation System$111
- Medical Device$109
- Trestle Luxe II$107
How this compares
$80,640 in reported general payments places this provider in the 85th percentile of 149 neurological surgery providers in Colorado.
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 | 23 | $442 |
| Oxycodone Hcl | 27 | $257 |
| Methocarbamol | 26 | $219 |
| Methylprednisolone | 28 | $204 |
| Tramadol Hcl | 21 | $155 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Greenwood Village
- Sharad RajpalBoulder$2.8M
- Chad PrusmackLone Tree$2.1M
- Timothy WirtFort Collins$581K
- Donn TurnerFort Collins$581K
- Ernest BraxtonEdwards$549K
- Bradley DuhonLone Tree$386K
- Peter SyreEnglewood$301K
- Sean MarkeyDenver$170K
- Peter FecciAurora$170K
- Edward MaaDenver$165K
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.