John Chatas, MD
Interventional Pain Medicine · Ann Arbor, MINPI 1083710107
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (38.2%), food and beverage and education — rather than concentrated in one kind of arrangement. 27 manufacturers reported payments, led by Boston Scientific at 47.2% of the total. Reporting peaked in 2021 at $10,782 and has fallen 89.8% since, to $1,103 in 2025. Among interventional pain medicine 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 260 payments — averaging $110.67 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$14K
- Painteq LLC$7K
- Saluda Medical Americas, Inc.$3K
- Vertiflex, Inc.$1K
- Abbott$1K
- Nevro Corp.$708
- plus $3K from 21 others
Across 27 payments — averaging $2245.51 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$61K
What the payments were for
- Speaking & faculty fees$11,00038%
- Travel & lodging$4,06514%
- Food & beverage$7,18025%
- Education$6,53023%
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 |
|---|---|---|
| Boston Scientific | 106 | $13,595 |
| Painteq LLC | 6 | $6,519 |
| Saluda Medical Americas, Inc. | 14 | $2,682 |
| Vertiflex, Inc. | 10 | $1,268 |
| Abbott | 12 | $1,056 |
| Nevro Corp. | 18 | $708 |
| Vertos Medical, Inc. | 14 | $670 |
| Relievant Medsystems, Inc. | 9 | $642 |
| AbbVie(2 entities) | 18 | $333 |
| Medtronic(2 entities) | 15 | $285 |
| Globus Medical | 6 | $182 |
| SPR Therapeutics, Inc | 6 | $182 |
| Bioventus LLC | 2 | $166 |
| Spinal Simplicity, LLC | 4 | $87 |
| Intrinsic Therapeutics | 1 | $56 |
| Amgen | 3 | $54 |
| Si-bone, Inc. | 2 | $54 |
| Stryker | 2 | $40 |
| Biotronik NRO, Inc. | 2 | $37 |
| Tersera Therapeutics LLC | 2 | $36 |
| Lilly USA, LLC | 2 | $29 |
| Scilex Pharmaceuticals Inc. | 1 | $24 |
| Curonix LLC | 1 | $20 |
| Nalu Medical, Inc. | 1 | $16 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $16 |
| Novartis | 1 | $12 |
| Merit Medical Systems Inc | 1 | $6 |
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.
- SUPERION$11,160
- PAINTEQ$6,519
- Evoke SCS$2,234
- Superion ISS$1,044
- Proclaim Family of SCS IPGs$715
- Intracept$361
- mild Device Kit$289
- Senza Spinal Cord Stimulation System$239
- Evoke$164
- XCELL$145
- Omnia$135
- GENERAL PAIN MANAGEMENT$124
- SPRINT PNS System$107
- PROCLAIM$104
How this compares
$28,776 in reported general payments places this provider in the 90th percentile of 88 interventional pain medicine providers in Michigan.
See all interventional pain medicine 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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 38 | $375 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 18 | $194 |
| Oxycodone Hcl | 11 | $158 |
| Cefadroxil | 15 | $66 |
| Prednisone | 16 | $34 |
| Tramadol Hcl | 11 | $22 |
Paid to pharmacies, not to this prescriber.
Other interventional pain medicine in Ann Arbor
- Chad BrummettAnn Arbor$109K
- Louis BojrabAnn Arbor$20K
- Edward WashabaughAnn Arbor$10K
- Travis StroppAnn Arbor$6K
- Ryan MeralAnn Arbor$2K
- Mohit RastogiAnn Arbor$1K
- Ryan PollinaSaint Clair Shores$144K
- Ariel MajjhooMonroe$124K
- Anand ThakurClinton Township$102K
- Evan PeskinFlint$72K
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.