Joanna McKellar, PA
Physician Assistant · North Charleston, SCNPI 1144986530
Payments from drug & device makers
Across 30 payments — averaging $91.97 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Abbott$2K
- AbbVie$125
- Curonix LLC$54
- Averitas Pharma Inc.$34
- Supernus Pharmaceuticals, Inc.$17
- Johnson & Johnson$16
- plus $37 from 3 others
Across 3 payments — averaging $666.79 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.
- Lexicon Pharmaceuticals, Inc.$2K
What the payments were for
- Travel & lodging$1,53356%
- Food & beverage$1,22644%
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 |
|---|---|---|
| Abbott | 20 | $2,476 |
| AbbVie | 1 | $125 |
| Curonix LLC | 3 | $54 |
| Averitas Pharma Inc. | 1 | $34 |
| Supernus Pharmaceuticals, Inc. | 1 | $17 |
| Johnson & Johnson | 1 | $16 |
| Amneal Pharmaceuticals LLC | 1 | $13 |
| GRT US Holding, Inc. | 1 | $13 |
| Currax Pharmaceuticals LLC | 1 | $11 |
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
$2,759 in reported general payments places this provider in the 80th percentile of 1,852 physician assistant providers in South Carolina.
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 |
|---|---|---|
| Xtampza ErOxycodone Myristate | 45 | $36,153 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 419 | $9,590 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 345 | $7,962 |
| MovantikNaloxegol Oxalate | 12 | $5,595 |
| Pregabalin | 99 | $3,711 |
| Morphine Sulfate ErMorphine Sulfate | 115 | $3,166 |
| Gabapentin | 203 | $1,904 |
| Celecoxib | 47 | $1,535 |
| Tramadol Hcl ErTramadol Hcl | 23 | $1,439 |
| Diclofenac Sodium | 31 | $1,085 |
| Morphine Sulfate | 41 | $947 |
| Tizanidine Hcl | 97 | $862 |
| Cyclobenzaprine Hcl | 100 | $853 |
| Baclofen | 39 | $410 |
| Tramadol Hcl | 61 | $325 |
Paid to pharmacies, not to this prescriber.
Other physician assistant in North Charleston
- Lauren OlsonNorth Charleston$62K
- Christopher DavisNorth Charleston$18K
- Grace HowieNorth Charleston$11K
- Benjamin AddyWest Columbia$377K
- Michael OvercashCharleston$210K
- Allison LesterMt Pleasant$163K
- Nicole KeeterFort Mill$129K
- William YoungGreenville$117K
- Stephanie DavisAnderson$78K
- Vicki RobertsWest Columbia$77K
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.