Greg Halko, MD
Hand Surgery · Oklahoma City, OKNPI 1124114764
Payments from drug & device makers
What this record shows
This record is dominated by education: $1,200 of the $1,526 with a category attached, or 78.6%. Pylant Medical accounts for 79.5% of it on its own, with 13 other manufacturers making up the rest. Reporting peaked in 2022 at $1,322 and has fallen 96.9% since, to $41 in 2024. That places this record below the midpoint for hand surgery clinicians in OK, where the typical reported total is $3,824.
Across 20 payments — averaging $76.29 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pylant Medical$1K
- Bioventus LLC$59
- Pacira Therapeutics, Inc.$40
- Acera Surgical, Inc.$37
- Kowa Pharmaceuticals America, Inc.$34
- Endo USA, Inc.$24
- plus $119 from 8 others
What the payments were for
- Food & beverage$32621%
- Education$1,20079%
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 |
|---|---|---|
| Pylant Medical | 2 | $1,213 |
| Bioventus LLC | 3 | $59 |
| Pacira Therapeutics, Inc. | 2 | $40 |
| Acera Surgical, Inc. | 2 | $37 |
| Kowa Pharmaceuticals America, Inc. | 2 | $34 |
| Endo USA, Inc. | 1 | $24 |
| Dexcom, Inc. | 1 | $22 |
| Endo Pharmaceuticals Inc. | 1 | $21 |
| Integra Lifesciences Corporation | 1 | $21 |
| Pacira Pharmaceuticals Incorporated | 1 | $17 |
| Davol Inc. | 1 | $17 |
| Johnson & Johnson | 1 | $12 |
| Skeletal Dynamics Inc | 1 | $7 |
| Sonex Health, Inc. | 1 | $2 |
How this compares
$1,526 in reported general payments places this provider in the 40th percentile of 26 hand surgery providers in Oklahoma.
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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 139 | $972 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 71 | $747 |
| Doxycycline Hyclate | 14 | $197 |
| Ondansetron Hcl | 15 | $74 |
| Gabapentin | 12 | $55 |
| Tramadol Hcl | 15 | $23 |
Paid to pharmacies, not to this prescriber.
Other hand surgery in Oklahoma City
- Clayton NelsonOklahoma City$22K
- David RushOklahoma City$15K
- Brian ChenowethOklahoma City$11K
- Thomas LehmanOklahoma City$5K
- Yuri LansingerOklahoma City$5K
- Richard RuffinOklahoma City$4K
- Ashley CogarOklahoma City$3K
- Shawhin ShahriariOklahoma City$2K
- Mark ShreveOklahoma City$859
- Harold YocumOklahoma City$743
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.