Matthew Diltz, MD
Orthopaedic Surgery · Rancho Mirage, CANPI 1447456579
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (55.0%), education and travel and lodging — rather than concentrated in one kind of arrangement. Arthrex accounts for 64.3% of it on its own, with 6 other manufacturers making up the rest. Reporting peaked in 2021 at $2,358 and has fallen 92.3% since, to $181 in 2025.
Across 48 payments — averaging $105.18 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$3K
- Empire Medical, Inc$1K
- Miach Orthopaedics, Inc.$159
- Illuminoss Medical, Inc.$118
- Stryker$113
- Johnson & Johnson$71
- plus $17 from 1 others
Across 12 payments — averaging $2179.71 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.
- Medical Device Business Services, Inc.$16K
- Zimmer Biomet$10K
What the payments were for
- Travel & lodging$1,07221%
- Food & beverage$2,77655%
- Education$1,20024%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 | 39 | $3,246 |
| Empire Medical, Inc | 2 | $1,324 |
| Miach Orthopaedics, Inc. | 1 | $159 |
| Illuminoss Medical, Inc. | 2 | $118 |
| Stryker | 2 | $113 |
| Johnson & Johnson | 1 | $71 |
| DJO, LLC | 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.
- KNEE & HIP IMPLANTS SUSPENSORY FIXATION OTHER$136
- KNEE & HIP IMPLANTS HIP FIBERTAK$124
- KNEE & HIP IMPLANTS SUSPENSORY FIXATION$102
How this compares
$5,048 in reported general payments places this provider in the 60th percentile of 1,808 orthopaedic surgery 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 |
|---|---|---|
| Celecoxib | 54 | $1,502 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Rancho Mirage
- Patrick St PierreRancho Mirage$1.7M
- Erik SchnaserRancho Mirage$948K
- Bradford HackArcadia$18.3M
- Robert GorabOrange$13.6M
- Kelly VinceLos Angeles$9.6M
- Stephen HowellSacramento$9.4M
- Thomas CoonRed Bluff$9.2M
- Nirav AminPlacentia$5.6M
- Tom NorrisSan Francisco$5.3M
- Jay LiebermanLos Angeles$4.8M
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.