Matthew Lambert, MD
Nephrology · Spartanburg, SCNPI 1992840805
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 97.6% of the total across 456 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 35 manufacturers, the largest accounting for just 9.3% — the pattern of someone who eats at a lot of different presentations.
Across 456 payments — averaging $20.31 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Akebia Therapeutics Inc$863
- AstraZeneca$849
- Amgen$793
- Novartis$688
- Otsuka America Pharmaceutical, Inc.$608
- Travere Therapeutics, Inc.$524
- plus $5K from 29 others
What the payments were for
- Food & beverage$9,03498%
- Education$2262%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Akebia Therapeutics Inc | 38 | $863 |
| AstraZeneca(2 entities) | 48 | $849 |
| Amgen(2 entities) | 39 | $793 |
| Novartis | 27 | $688 |
| Otsuka America Pharmaceutical, Inc. | 54 | $608 |
| Travere Therapeutics, Inc. | 22 | $524 |
| Mallinckrodt Hospital Products Inc. | 19 | $484 |
| ANI Pharmaceuticals, Inc. | 20 | $473 |
| Vifor Pharma, Inc. | 23 | $446 |
| Calliditas Therapeutics US Inc. | 17 | $444 |
| GSK | 22 | $412 |
| Bayer | 18 | $358 |
| Mallinckrodt Enterprises LLC | 10 | $270 |
| Aurinia Pharma U.S., Inc. | 15 | $262 |
| Novo Nordisk | 10 | $248 |
| Daiichi Sankyo Inc. | 11 | $192 |
| Fresenius USA Marketing, Inc. | 10 | $175 |
| Lilly USA, LLC | 7 | $138 |
| Ardelyx, Inc. | 5 | $126 |
| Recor Medical Inc | 1 | $125 |
| Boehringer Ingelheim | 5 | $109 |
| Ultragenyx Pharmaceutical Inc. | 6 | $99 |
| Rockwell Medical, Inc. | 5 | $88 |
| Kyowa Kirin, Inc. | 3 | $76 |
| Baxter Healthcare | 5 | $65 |
| Apellis Pharmaceuticals, Inc. | 2 | $57 |
| Inari Medical, Inc. | 1 | $56 |
| Ascendis Pharma Endocrinology Inc | 2 | $49 |
| Cormedix Inc. | 2 | $38 |
| Arbor Pharmaceuticals, Inc. | 2 | $31 |
| Hikma Pharmaceuticals USA | 2 | $30 |
| OPKO Pharmaceuticals, LLC | 2 | $29 |
| Lundbeck LLC | 1 | $20 |
| Scpharmaceuticals Inc. | 1 | $17 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 1 | $17 |
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
$9,260 in reported general payments places this provider in the 85th percentile of 180 nephrology 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 |
|---|---|---|
| FarxigaDapagliflozin Propanediol | 141 | $119,188 |
| VeltassaPatiromer Calcium Sorbitex | 74 | $69,221 |
| JardianceEmpagliflozin | 72 | $55,711 |
| KerendiaFinerenone | 25 | $21,263 |
| AuryxiaFerric Citrate | 15 | $21,009 |
| VelphoroSucroferric Oxyhydroxide | 11 | $15,886 |
| LokelmaSodium Zirconium Cyclosilicate | 12 | $8,432 |
| SpsSodium Polystyrene Sulfon/Sorb | 26 | $7,342 |
| Calcium Acetate | 78 | $4,999 |
| DapagliflozinDapagliflozin Propanediol | 12 | $3,594 |
| Chlorthalidone | 163 | $1,895 |
| Colchicine | 18 | $1,668 |
| Cinacalcet Hcl | 16 | $1,636 |
| Calcitriol | 104 | $1,558 |
| Bumetanide | 52 | $1,498 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AstraZenecaFarxiga, Lokelma | $849 | $127,620153 claims |
| Boehringer IngelheimJardiance | $109 | $55,71172 claims |
| BayerKerendia | $358 | $21,26325 claims |
| Akebia Therapeutics IncAuryxia | $863 | $21,00915 claims |
| Fresenius USA Marketing, Inc.Velphoro | $175 | $15,88611 claims |
| ANI Pharmaceuticals, Inc.Valsartan | $473 | $69117 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 85th percentile of 180 nephrology providers in South Carolina.
Other nephrology in Spartanburg
- Subhashini SubramaniamSpartanburg$13K
- Muhammad EbrahimSpartanburg$13K
- Tanya TangSpartanburg$11K
- Lawrence McGeeSpartanburg$11K
- Kofi AppiahSpartanburg$7K
- Charles MurdockSpartanburg$7K
- Jessica ColemanBeaufort$930K
- Moustafa MoustafaOrangeburg$616K
- Harold SzerlipCharleston$229K
- Barry GorlitskyGreenville$195K
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.