Michael Flierl, MD
Orthopaedic Surgery · Troy, MINPI 1043535552
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $41,826 of the $47,779 with a category attached, or 87.5%. 9 manufacturers reported payments, led by Medical Device Business Services, Inc. at 42.5% of the total. Reporting peaked in 2020 at $19,470 and has fallen 77.4% since, to $4,394 in 2025. Among orthopaedic surgery clinicians in MI with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 95 payments — averaging $502.94 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medical Device Business Services, Inc.$20K
- Depuy Synthes Products, Inc.$13K
- Zimmer Biomet$7K
- Medacta USA, Inc.$4K
- Johnson & Johnson$2K
- Stryker$609
- plus $397 from 3 others
Across 31 payments — averaging $16,494 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.
- Zimmer Biomet$510K
- Medacta USA, Inc.$1K
What the payments were for
- Consulting fees$41,82688%
- Travel & lodging$2,7946%
- Food & beverage$3,1597%
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 |
|---|---|---|
| Medical Device Business Services, Inc. | 21 | $20,322 |
| Depuy Synthes Products, Inc. | 31 | $12,949 |
| Zimmer Biomet | 10 | $7,073 |
| Medacta USA, Inc. | 4 | $4,492 |
| Johnson & Johnson | 16 | $1,937 |
| Stryker | 10 | $609 |
| Hikma Pharmaceuticals USA | 1 | $305 |
| Pacira Therapeutics, Inc. | 1 | $75 |
| KCI USA, Inc. | 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.
- ATTUNE$31,905
- PD-Knee-New Product$6,760
- GMK SPHERE$4,321
- Velys$1,942
- MAKO$518
- COMBOGESIC IV$305
- TRITANIUM$263
- TRIATHLON$247
- GMK Sphere Revision System$142
- ACCOLADE$131
- ACTIS$121
- G7$121
- Synovasure$121
- TRIDENT$116
- ROSA$114
- Persona$114
How this compares
$47,779 in reported general payments places this provider in the 90th percentile of 829 orthopaedic surgery providers in Michigan.
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 |
|---|---|---|
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 39 | $294 |
| Meloxicam | 86 | $262 |
| Amoxicillin | 102 | $209 |
| Oxycodone Hcl | 38 | $173 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 24 | $140 |
| Acetaminophen-CodeineAcetaminophen With Codeine | 22 | $117 |
| Tramadol Hcl | 63 | $117 |
| Methocarbamol | 22 | $58 |
| Clindamycin Hcl | 17 | $35 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Troy
- Shariff BishaiTroy$1.2M
- Donald KnapkeTroy$496K
- Asheesh BediAnn Arbor$9.4M
- Jerome WiaterBeverly Hills$3.9M
- Mark PintoChelsea$3.2M
- Kyle AndersonBingham Farms$3.1M
- Stephen BartolDetroit$2.6M
- Jad KhalilSouthfield$1.9M
- Jeffrey FischgrundSouthfield$1.8M
- John BlahaAnn Arbor$1.5M
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.