Michael Groover, DO
Adult Reconstructive Orthopaedic Surgery · Billings, MTNPI 1023455748
Payments from drug & device makers
Across 198 payments — averaging $273.98 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Globus Medical$29K
- Medacta USA, Inc.$9K
- Medical Device Business Services, Inc.$8K
- Stryker$5K
- Zimmer Biomet$799
- Davol Inc.$740
- plus $1K from 10 others
What the payments were for
- Consulting fees$22,86142%
- Speaking & faculty fees$7001%
- Travel & lodging$21,56240%
- Food & beverage$9,12517%
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 |
|---|---|---|
| Globus Medical | 41 | $29,127 |
| Medacta USA, Inc. | 50 | $9,298 |
| Medical Device Business Services, Inc. | 11 | $7,976 |
| Stryker | 65 | $5,099 |
| Zimmer Biomet | 10 | $799 |
| Davol Inc. | 2 | $740 |
| Johnson & Johnson | 4 | $332 |
| Osteoremedies, LLC | 1 | $248 |
| Heron Therapeutics, Inc. | 5 | $125 |
| Smith+Nephew | 2 | $115 |
| Onkos Surgical, Inc. | 1 | $105 |
| Linkbio Corp | 1 | $79 |
| Orthalign Inc | 1 | $72 |
| My01 Inc. | 1 | $63 |
| Pacira Pharmaceuticals Incorporated | 2 | $48 |
| Innovation Technologies Inc | 1 | $20 |
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.
- ACTIFY 3D$19,620
- GMK SPHERE$6,370
- Onvoy$4,579
- Joints$3,658
- MAKO$2,652
- AMIStem H Femoral Stems$1,708
- AMISTEM$975
- Joint Arthroplasty$748
- TRIATHLON$722
- ATTUNE$549
- Velys$431
- Comprehensive Shoulder System$173
- Identity$173
- ROSA$149
- Legacy Stelkast Knee$124
- M-Vizion Femoral Revision System$123
- Persona$117
- Genflex2 Total Knee System$114
- MOTO UNI$108
- ELEOS LIMB SALVAGE SYSTEM$105
How this compares
Too few adult reconstructive orthopaedic surgery providers in Montanato place this figure against a meaningful peer group, so we don't.
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 | 65 | $848 |
| Amoxicillin | 181 | $187 |
| Ondansetron OdtOndansetron | 13 | $143 |
| Gabapentin | 12 | $81 |
| Cyclobenzaprine Hcl | 22 | $76 |
| Methylprednisolone | 11 | $70 |
| Cephalexin | 12 | $60 |
| Meloxicam | 27 | $50 |
| Clindamycin Hcl | 21 | $33 |
Paid to pharmacies, not to this prescriber.
Other adult reconstructive orthopaedic surgery in Billings
- Dean SukinBozeman$337K
- Daniel GannonBozeman$13K
- Martin GelbkeBozeman$8K
- David AllmacherMissoula$1K
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.