Mark Mahan, MD
Neurological Surgery · Salt Lake City, UTNPI 1477733426
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (55.1%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. 31 manufacturers reported payments, led by Arthrex at 57.2% of the total. 2025 is the largest year on record at $299,926, 7.3 times the $41,176 reported in 2019. Among neurological surgery clinicians in UT with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 420 payments — averaging $1661.98 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$399K
- Joimax, Inc.$206K
- Axogen$23K
- Spineology Inc.$21K
- Richard Wolf Medical Instruments Corp.$8K
- Riwospine, Inc.$8K
- plus $32K from 25 others
Across 13 payments — averaging $13,427 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.
- Axogen$114K
- Orthofix Medical, Inc.$37K
- Nevro Corp.$23K
What the payments were for
- Consulting fees$174,57125%
- Speaking & faculty fees$384,73255%
- Travel & lodging$124,77618%
- Food & beverage$13,3452%
- Education$1110%
- Entertainment$4980%
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 |
|---|---|---|
| Arthrex | 295 | $399,474 |
| Joimax, Inc. | 21 | $205,670 |
| Axogen | 18 | $23,426 |
| Spineology Inc. | 14 | $21,036 |
| Richard Wolf Medical Instruments Corp. | 1 | $8,445 |
| Riwospine, Inc. | 2 | $7,854 |
| Pacira Pharmaceuticals Incorporated | 2 | $6,750 |
| SPR Therapeutics, Inc | 3 | $6,081 |
| Cerapedics Inc. | 10 | $5,589 |
| Synthes GmbH | 4 | $3,529 |
| AstraZeneca | 1 | $3,100 |
| Stryker | 10 | $2,137 |
| Aesculap Implant Systems, LLC | 7 | $1,307 |
| Boston Scientific | 7 | $1,156 |
| Abbott | 2 | $370 |
| Globus Medical(2 entities) | 3 | $311 |
| Centinel Spine, LLC | 1 | $307 |
| Nevro Corp. | 2 | $215 |
| Providence Medical Technology, Inc. | 1 | $196 |
| Alphatec Spine, Inc | 1 | $155 |
| Checkpoint Surgical, Inc | 2 | $146 |
| Saluda Medical Americas, Inc. | 2 | $140 |
| Si-bone, Inc. | 1 | $113 |
| Piedmont Plus Innovation | 1 | $93 |
| Orthofix Medical, Inc. | 1 | $90 |
| Medtronic | 1 | $82 |
| Coastal Medical Technologies LLC | 1 | $73 |
| Active Medical, LLC | 3 | $69 |
| Camber Spine Technologies LLC | 1 | $55 |
| Avita Medical Americas, LLC | 1 | $47 |
| Pylant Medical | 1 | $17 |
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.
- OPTIMESH EXPANDABLE INTERBODY FUSION SYSTEM$20,923
- AxoGuard Nerve Protector$19,245
- AxoGuard Nerve Connector$19,245
- Medical Instrumentation$8,445
- Spine$7,854
- EXPAREL$6,750
- AVANCE NERVE GRAFT$6,479
- SPRINT PNS System$6,000
- I-FACTOR PEPTIDE ENHANCED BONE GRAFT$5,453
- KOSELUGO$3,100
- ACTIVL$1,023
- ARTHREX$508
- Lamitrode SCS Leads$370
- PRODISC C$307
- Senza$157
- SPECTRA WAVEWRITER$149
- X-CORE$139
- TLX$139
- Evoke SCS$122
- iFuse Implant$113
How this compares
$698,033 in reported general payments places this provider in the 95th percentile of 75 neurological surgery providers in Utah.
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 |
|---|---|---|
| Ondansetron Hcl | 32 | $49 |
Paid to pharmacies, not to this prescriber.
Other neurological surgery in Salt Lake City
- Ramesh GrandhiSalt Lake City$586K
- Kenneth YonemuraSalt Lake City$117K
- Andrew DaileySalt Lake City$74K
- Craig KilburgSalt Lake City$66K
- Ronald ApfelbaumSalt Lake City$56K
- Guilherme Santos PiedadeSalt Lake City$51K
- Karol BudohoskiSalt Lake City$30K
- Randy JensenSalt Lake City$22K
- Joe MendezSalt Lake City$17K
- Ilyas EliSalt Lake City$13K
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.