David McKellar, MD
Pain Medicine · Hattiesburg, MSNPI 1700947579
Payments from drug & device makers
What this record shows
Nevro Corp. accounts for 73.8% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2019 at $1,859 and has fallen 89.7% since, to $192 in 2025. That places this record below the midpoint for pain medicine clinicians in MS, where the typical reported total is $3,332.
Across 46 payments — averaging $51.50 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Nevro Corp.$2K
- Boston Scientific$229
- Biotronik NRO, Inc.$92
- Abbott$76
- Medtronic$75
- Valinor Pharma, LLC$65
- plus $85 from 4 others
What the payments were for
- Travel & lodging$1,40959%
- Food & beverage$96041%
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 |
|---|---|---|
| Nevro Corp. | 16 | $1,747 |
| Boston Scientific | 11 | $229 |
| Biotronik NRO, Inc. | 3 | $92 |
| Abbott | 3 | $76 |
| Medtronic(2 entities) | 4 | $75 |
| Valinor Pharma, LLC | 4 | $65 |
| Forte Bio-pharma LLC | 2 | $33 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $18 |
| Shionogi Inc | 1 | $18 |
| Scilex Pharmaceuticals 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
$2,369 in reported general payments places this provider in the 40th percentile of 48 pain medicine providers in Mississippi.
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 |
|---|---|---|
| Morphine Sulfate ErMorphine Sulfate | 22 | $1,132 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 40 | $991 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 57 | $852 |
| Gabapentin | 21 | $333 |
Paid to pharmacies, not to this prescriber.
Other pain medicine in Hattiesburg
- Bretley SitzmanHattiesburg$18K
- Dennis MarceloHattiesburg$10K
- Jonathan RayburnHattiesburg$8K
- Alan ColeHattiesburg$6K
- Brent BevardHattiesburg$6K
- Joe LeighHattiesburg$414
- Rayhan TariqLaurel$64K
- Alan TorreyVicksburg$30K
- Landon BurnsFlowood$22K
- Joe CookByram$21K
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.