Tanya Tang, DO
Nephrology · Spartanburg, SCNPI 1528388030
Payments from drug & device makers
Across 439 payments — averaging $25.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Vifor Pharma, Inc.$2K
- Amgen$878
- Otsuka America Pharmaceutical, Inc.$833
- ANI Pharmaceuticals, Inc.$766
- AstraZeneca$751
- Travere Therapeutics, Inc.$715
- plus $5K from 30 others
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 |
|---|---|---|
| Vifor Pharma, Inc. | 35 | $2,143 |
| Amgen(2 entities) | 41 | $878 |
| Otsuka America Pharmaceutical, Inc. | 77 | $833 |
| ANI Pharmaceuticals, Inc. | 25 | $766 |
| AstraZeneca(2 entities) | 41 | $751 |
| Travere Therapeutics, Inc. | 16 | $715 |
| Calliditas Therapeutics US Inc. | 23 | $647 |
| Bayer | 28 | $627 |
| Mallinckrodt Hospital Products Inc. | 18 | $497 |
| Novartis | 18 | $433 |
| Akebia Therapeutics Inc | 17 | $413 |
| GSK | 19 | $387 |
| Mallinckrodt Enterprises LLC | 15 | $315 |
| Novo Nordisk | 10 | $249 |
| Inari Medical, Inc. | 4 | $235 |
| Ardelyx, Inc. | 8 | $182 |
| Aurinia Pharma U.S., Inc. | 7 | $138 |
| Recor Medical Inc | 1 | $125 |
| Fresenius USA Marketing, Inc. | 7 | $124 |
| Boehringer Ingelheim | 4 | $103 |
| Stryker | 1 | $73 |
| Lilly USA, LLC | 4 | $69 |
| Daiichi Sankyo Inc. | 4 | $63 |
| Kyowa Kirin, Inc. | 2 | $53 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 2 | $35 |
| Ascendis Pharma Endocrinology Inc | 1 | $29 |
| Apellis Pharmaceuticals, Inc. | 1 | $29 |
| Baxter Healthcare | 2 | $24 |
| Lundbeck LLC | 1 | $21 |
| Rockwell Medical, Inc. | 1 | $19 |
| Ultragenyx Pharmaceutical Inc. | 1 | $19 |
| Seqirus USA Inc | 1 | $18 |
| Cormedix Inc. | 1 | $18 |
| OPKO Pharmaceuticals, LLC | 1 | $17 |
| Arbor Pharmaceuticals, Inc. | 1 | $12 |
| AbbVie | 1 | $11 |
How this compares
$11,070 in reported general payments places this provider in the 80th 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.
Other nephrology in Spartanburg
- Muhammad EbrahimSpartanburg$146K
- Subhashini SubramaniamSpartanburg$13K
- Lawrence McGeeSpartanburg$11K
- Matthew LambertSpartanburg$9K
- Kofi AppiahSpartanburg$7K
- Charles MurdockSpartanburg$7K
- Barry GorlitskyGreenville$3.1M
- Moustafa MoustafaOrangeburg$3M
- Amy SpragueGeorgetown$1.5M
- Pusadee SuchindaSumter$1.3M
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.