Benjamin Dorenkamp, DO
Orthopaedic Surgery of the Spine · Lansing, MINPI 1417349986
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (48.0%), travel and lodging and education — rather than concentrated in one kind of arrangement. It is spread thinly across 27 manufacturers, the largest accounting for just 21.1%. Reporting peaked in 2021 at $7,950 and has fallen 89.6% since, to $830 in 2025.
Across 201 payments — averaging $75.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medical Device Business Services, Inc.$3K
- Seaspine Orthopedics Corporation$3K
- Johnson & Johnson$3K
- Brainlab, Inc.$2K
- Boston Scientific$1K
- Medwest Associates$708
- plus $3K from 21 others
Across 13 payments — averaging $1442.88 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.
- Boston Scientific$19K
What the payments were for
- Travel & lodging$7,17147%
- Food & beverage$7,32748%
- Education$7085%
- Entertainment$630%
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. | 18 | $3,225 |
| Seaspine Orthopedics Corporation | 18 | $2,925 |
| Johnson & Johnson(2 entities) | 72 | $2,744 |
| Brainlab, Inc. | 5 | $1,598 |
| Boston Scientific | 37 | $1,497 |
| Medwest Associates | 1 | $708 |
| Abbott | 5 | $357 |
| Smith+Nephew | 4 | $346 |
| Stryker | 4 | $270 |
| Globus Medical(2 entities) | 5 | $254 |
| AbbVie(2 entities) | 5 | $241 |
| Arthrex | 1 | $145 |
| Ulrich Medical USA, Inc. | 2 | $135 |
| Heron Therapeutics, Inc. | 2 | $135 |
| Avanos Medical | 1 | $124 |
| Medtronic(2 entities) | 3 | $124 |
| Centinel Spine, LLC | 2 | $111 |
| Orthofix Medical, Inc. | 4 | $77 |
| Si-bone, Inc. | 3 | $52 |
| Amgen | 1 | $44 |
| Pfizer | 2 | $34 |
| Cerapedics Inc. | 1 | $34 |
| Zak Ortho | 1 | $33 |
| Radius Health, Inc. | 1 | $20 |
| Biohaven Pharmaceuticals, Inc. | 1 | $15 |
| Eisai Inc. | 1 | $12 |
| Augmedics Inc. | 1 | $10 |
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.
- Mariner$2,452
- VIPER$2,204
- NorthStar OCT$1,701
- Image Guided Surgical Device$1,533
- Spine & Trauma 3D Navigation$733
- Shoreline ACS$693
- PROCLAIM$277
- Bioinductive Implant with Arthroscopic Delivery System - Medium$249
- CONDUIT$223
- SYMPHONY$220
- NorthStar$213
- Healicoil$202
- AXSOS$148
- Bone Anchors with Arthroscopic Delivery System$148
- Sable$139
- GENERAL PAIN MANAGEMENT$129
- Zero-P VA$125
- DALVANCE$124
- ON-Q* PUMP AND ACCESSORIES$124
- Zynrelef$121
How this compares
$15,269 in reported general payments places this provider in the 55th percentile of 37 orthopaedic surgery of the spine providers in Michigan.
See all orthopaedic surgery of the spine 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 |
|---|---|---|
| Gabapentin | 112 | $866 |
| Methocarbamol | 33 | $293 |
| Oxycodone Hcl | 42 | $259 |
| Celecoxib | 21 | $236 |
| Meloxicam | 47 | $100 |
| Tramadol Hcl | 22 | $58 |
| Cyclobenzaprine Hcl | 12 | $31 |
| Diazepam | 14 | $14 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery of the spine in Lansing
- John FloodLansing$11K
- Peter BonoSouthfield$786K
- Joseph BrownGrand Rapids$565K
- Nilesh PatelDearborn$449K
- Michael KastenKalamazoo$261K
- John LamacchiaRochester$179K
- Joshua EllwitzKalamazoo$150K
- Michael KapsokavathisBirmingham$120K
- Michael DonahueAuburn Hills$96K
- Matthew KarekGrand Rapids$90K
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.