Christopher Tkach, MD
Orthopaedic Surgery · Oklahoma City, OKNPI 1679929707
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (35.7%), food and beverage and speaking fees — rather than concentrated in one kind of arrangement. 17 manufacturers reported payments, led by Total Joint Orthopedics, Inc. at 47.4% of the total. 2025 is the largest year on record at $19,487, 6.1 times the $3,174 reported in 2019.
Across 110 payments — averaging $286.76 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Total Joint Orthopedics, Inc.$15K
- Ortho Development Corporation$8K
- Pylant Medical$4K
- Stryker$3K
- Corentec America Inc$427
- Zimmer Biomet$308
- plus $1K from 11 others
What the payments were for
- Consulting fees$11,25036%
- Speaking & faculty fees$5,00016%
- Travel & lodging$4,49514%
- Food & beverage$6,88222%
- Education$3,67912%
- Gifts$2371%
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 |
|---|---|---|
| Total Joint Orthopedics, Inc. | 21 | $14,955 |
| Ortho Development Corporation | 21 | $8,073 |
| Pylant Medical | 4 | $3,841 |
| Stryker | 37 | $2,907 |
| Corentec America Inc | 3 | $427 |
| Zimmer Biomet | 3 | $308 |
| Smith+Nephew | 8 | $304 |
| Johnson & Johnson | 2 | $130 |
| Linkbio Corp | 1 | $116 |
| Boston Scientific | 1 | $114 |
| Nextstep Arthropedix, LLC | 1 | $113 |
| Pixee Medical Inc. | 1 | $105 |
| Innovation Technologies Inc | 2 | $50 |
| Pacira Pharmaceuticals Incorporated | 2 | $41 |
| Kerecis Limited | 1 | $28 |
| SPR Therapeutics, Inc | 1 | $17 |
| ERMI LLC | 1 | $16 |
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.
- MAKO$1,661
- Corentec$427
- BKS TriMax$424
- ROSA-Knee$259
- Balance Knee Revision System$236
- Alpine Hip System$139
- SECUR-FIT$136
- EVOS$136
- TRIGEN InterTAN$136
- Walter$133
- Trauma-None$133
- Balanced Knee System$126
- Balanced Knee Revision System$126
- ATTUNE$123
- BKS Uni$121
- BKS Revision$117
- Ovation Tribute$117
- WaveWriter Alpha Prime 16$114
- iNSitu Hip System$113
- Trivicta$107
How this compares
$31,544 in reported general payments places this provider in the 85th percentile of 263 orthopaedic 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 |
|---|---|---|
| Celecoxib | 362 | $6,040 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 216 | $3,528 |
| Ondansetron Hcl | 169 | $964 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 55 | $894 |
| Omeprazole | 159 | $379 |
| Meloxicam | 131 | $275 |
| Tramadol Hcl | 53 | $258 |
| Naproxen | 19 | $244 |
| Doxycycline Hyclate | 16 | $209 |
| Methylprednisolone | 26 | $149 |
| Amoxicillin | 40 | $47 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Oklahoma City
- Andrew ParkinsonOklahoma City$3.1M
- Bradley ReddickOklahoma City$573K
- Jason EmersonOklahoma City$189K
- Ronald DumiganOklahoma City$169K
- Paul MaitinoOklahoma City$110K
- Thomas TkachOklahoma City$83K
- Brian LevingsOklahoma City$80K
- Christopher WhiteOklahoma City$73K
- Raymond SteinmetzOklahoma City$64K
- Michael JohnsonOklahoma City$63K
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.