John Barker, MD
Orthopaedic Surgery · Lone Tree, CONPI 1013919117
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (53.5%), travel and lodging and food and beverage — rather than concentrated in one kind of arrangement. 34 manufacturers reported payments, led by Medacta USA, Inc. at 34.2% of the total. Reporting peaked in 2019 at $31,236 and has fallen 96.9% since, to $969 in 2025.
Across 171 payments — averaging $404.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medacta USA, Inc.$24K
- Surgalign Spine Technologies, Inc.$23K
- Si-bone, Inc.$10K
- Bioventus LLC$9K
- Stryker$594
- Highridge Medical LLC$568
- plus $3K from 28 others
Across 13 payments — averaging $1778.15 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.
- Surgalign Spine Technologies, Inc.$23K
What the payments were for
- Consulting fees$36,94053%
- Speaking & faculty fees$3,9066%
- Travel & lodging$19,07928%
- Food & beverage$9,18013%
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 |
|---|---|---|
| Medacta USA, Inc. | 28 | $23,638 |
| Surgalign Spine Technologies, Inc. | 17 | $22,947 |
| Si-bone, Inc. | 35 | $9,571 |
| Bioventus LLC | 16 | $8,989 |
| Stryker | 12 | $594 |
| Highridge Medical LLC | 3 | $568 |
| Zimmer Biomet | 3 | $288 |
| Boston Scientific | 6 | $270 |
| Spinal Surgical Strategies, Inc. | 2 | $269 |
| Medtronic(2 entities) | 11 | $239 |
| Zimvie Inc. | 3 | $210 |
| Alphatec Spine, Inc | 4 | $199 |
| Spineology Inc. | 2 | $181 |
| Intrinsic Therapeutics | 1 | $170 |
| EBI, LLC | 1 | $157 |
| Providence Medical Technology, Inc. | 2 | $131 |
| Orthofix Medical, Inc. | 1 | $110 |
| Johnson & Johnson | 3 | $67 |
| CTL Medical Corporation | 2 | $67 |
| Globus Medical | 2 | $56 |
| Ulrich Medical USA, Inc. | 1 | $46 |
| KCI USA, Inc. | 1 | $37 |
| Arteriocyte Medical Systems, Inc. | 2 | $37 |
| Carlsmed, Inc. | 2 | $36 |
| Kowa Pharmaceuticals America, Inc. | 1 | $35 |
| Vertex | 2 | $33 |
| Centinel Spine, LLC | 1 | $30 |
| Aroa Biosurgery Incorporated | 1 | $23 |
| Nevro Corp. | 1 | $22 |
| Innovation Technologies Inc | 1 | $20 |
| Amgen | 1 | $18 |
| Theragen, Inc. | 1 | $16 |
| Lemaitre Vascular, Inc. | 1 | $15 |
| Augmedics Inc. | 1 | $14 |
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.
- MYSPINE$22,834
- SlMMETRY$11,211
- Simmetry$11,000
- iFuse Implant$7,821
- OsteoAMP$7,543
- ALLOGRAFT$523
- IFUSE IMPLANT SYSTEM$500
- MOBI-C PLUG & FIT US$412
- MUST$399
- BARRICAID ACD (ANNULAR CLOSURE DEVICE)$340
- SpF-XL IIb Implantable Spinal Fusion Stimulator$313
- SIMMETRY IMPLANT, 12.5MM X 50MM$194
- The Tether$149
- OptiMesh Interbody Fusion System$139
- Spine-None$115
- Polaris Translation Spinal Syste$115
- Spinal-Stim Osteogenesis Stimulator$110
- Cervical-Stim Osteogenesis Stimulator$110
- BoneScalpel$107
How this compares
$69,105 in reported general payments places this provider in the 85th percentile of 383 orthopaedic 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 Hcl | 54 | $1,135 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 32 | $831 |
| Gabapentin | 60 | $787 |
| Methocarbamol | 33 | $695 |
| Tramadol Hcl | 56 | $465 |
| Carisoprodol | 14 | $365 |
| Cyclobenzaprine Hcl | 21 | $283 |
| Methylprednisolone | 22 | $197 |
| Tizanidine Hcl | 11 | $150 |
| Meloxicam | 24 | $109 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Lone Tree
- Robert GreenhowLone Tree$2.8M
- David LoucksLone Tree$2.7M
- Mark FitzgeraldLone Tree$235K
- Eric JamrichLone Tree$97K
- Christopher JoyceLone Tree$67K
- Joel MattaVail$21M
- Douglas DennisDenver$16.8M
- Brian HaasDenver$5.1M
- Theodore SchlegelGreenwood Village$5M
- Charlie YangDenver$3.6M
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.