John Gleason, MD
Radiation Oncology · Huntsville, ALNPI 1457591539
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $5,354 of the $8,784 with a category attached, or 61.0%. Brainlab, Inc. accounts for 81.3% of it on its own, with 12 other manufacturers making up the rest. Reporting peaked in 2019 at $4,781 and has fallen 93.5% since, to $312 in 2025. Among radiation oncology clinicians in AL 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 63 payments — averaging $139.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Brainlab, Inc.$7K
- Siemens Medical Solutions USA, Inc.$839
- Novocure Inc.$208
- Sumitomo Pharma America, Inc.$125
- Varian Medical Systems, Inc.$116
- AstraZeneca$105
- plus $246 from 7 others
What the payments were for
- Speaking & faculty fees$1,00011%
- Travel & lodging$5,35461%
- Food & beverage$2,42628%
- Gifts$40%
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 |
|---|---|---|
| Brainlab, Inc. | 20 | $7,145 |
| Siemens Medical Solutions USA, Inc. | 8 | $839 |
| Novocure Inc. | 8 | $208 |
| Sumitomo Pharma America, Inc. | 1 | $125 |
| Varian Medical Systems, Inc. | 4 | $116 |
| AstraZeneca | 6 | $105 |
| GSK | 7 | $104 |
| Novartis | 2 | $43 |
| Eisai Inc. | 2 | $28 |
| Bayer | 2 | $23 |
| Verity Pharmaceuticals Inc. | 1 | $23 |
| Boston Scientific | 1 | $22 |
| Medtec LLC | 1 | $4 |
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
$8,784 in reported general payments places this provider in the 90th percentile of 87 radiation oncology providers in Alabama.
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 |
|---|---|---|
| Tamsulosin Hcl | 24 | $252 |
| Dexamethasone | 13 | $229 |
| Oxycodone Hcl | 14 | $204 |
| Lidocaine Hcl ViscousLidocaine Hcl | 15 | $190 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 11 | $101 |
| Lorazepam | 17 | $13 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Huntsville
- Hoyt ChildsHuntsville$7K
- Harry McCartyHuntsville$6K
- Ashlyn EverettHuntsville$6K
- Elizabeth FalkenbergHuntsville$971
- Alexander WhitleyMontgomery$441K
- Drexell BoggsBirmingham$35K
- Christopher JahrausAlabaster$28K
- Christopher WilleyBirmingham$13K
- Adam KoleBirmingham$11K
- William HixsonFairhope$10K
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.