Marvin Isbell, MD
Surgery · Norman, OKNPI 1194853226
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $22,228 of the $31,736 with a category attached, or 70.0%. Johnson & Johnson accounts for 71.5% of it on its own, with 12 other manufacturers making up the rest. Reporting peaked in 2019 at $29,260 and has fallen 99.1% since, to $261 in 2024. Among surgery clinicians in OK with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 55 payments — averaging $577.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Johnson & Johnson$23K
- Medical Device Business Services, Inc.$6K
- Bard Peripheral Vascular, Inc.$1K
- Inari Medical, Inc.$871
- Davol Inc.$98
- Covidien LP$63
- plus $247 from 7 others
What the payments were for
- Consulting fees$22,22870%
- Speaking & faculty fees$5002%
- Travel & lodging$7,54724%
- Food & beverage$1,4615%
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 |
|---|---|---|
| Johnson & Johnson | 13 | $22,696 |
| Medical Device Business Services, Inc. | 13 | $6,268 |
| Bard Peripheral Vascular, Inc. | 10 | $1,492 |
| Inari Medical, Inc. | 5 | $871 |
| Davol Inc. | 3 | $98 |
| Covidien LP | 2 | $63 |
| Medtronic | 2 | $57 |
| Kerecis Limited | 1 | $49 |
| BD | 2 | $39 |
| TELA Bio, Inc. | 1 | $34 |
| AbbVie | 1 | $32 |
| Innovation Technologies Inc | 1 | $20 |
| Surmodics, Inc. | 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.
How this compares
$31,736 in reported general payments places this provider in the 95th percentile of 290 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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 82 | $336 |
| Tramadol Hcl | 71 | $127 |
| Hydromorphone Hcl | 29 | $75 |
Paid to pharmacies, not to this prescriber.
Other surgery in Norman
- Tom ConnallyNorman$38K
- William HinojosaNorman$24K
- Lana NelsonNorman$15K
- Craig JohnsonTulsa$573K
- Eugene DickensTulsa$456K
- William JenningsTulsa$412K
- John LangClaremore$160K
- Bryce MurrayTulsa$152K
- Steven FeherTulsa$50K
- Samuel PangburnTulsa$50K
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.