ARUNAN SIVA VAMADEVAN
Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology MANASSAS, VA NPI 1457546236
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology VA Salix Pharmaceuticals, a division of Bausch Health US, LLC All categories
General Payments — all program years on this page
$3,747.39
- Category: General Payments
- Program years: PY2018–2024
- Record count: 144
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $1,045.57 across 47 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
Latest program year (PY2024) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $1,025.85 | 46 |
| Education | $19.72 | 1 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $147.40 | 7 |
| Takeda Pharmaceuticals U.S.A., Inc. | $141.42 | 7 |
| Lilly USA, LLC | $107.48 | 4 |
| Celgene Corporation | $82.67 | 4 |
| Janssen Biotech, Inc. | $80.90 | 2 |
| ABBVIE INC. | $77.98 | 4 |
| PFIZER INC. | $68.18 | 3 |
| Phathom Pharmaceuticals, Inc. | $59.13 | 3 |
| Regeneron Healthcare Solutions, Inc. | $48.57 | 2 |
| Merck Sharp & Dohme Corporation | $29.65 | 1 |
| Ardelyx, Inc. | $26.58 | 1 |
| GENZYME CORPORATION | $23.68 | 1 |
| Sandoz Inc. | $23.13 | 1 |
| AIMMUNE THERAPEUTICS, INC. | $22.18 | 1 |
| VERTEX PHARMACEUTICALS INCORPORATED | $19.81 | 1 |
| Ferring Pharmaceuticals Inc. | $19.74 | 1 |
| Celltrion USA Inc. | $19.72 | 1 |
| Braintree Laboratories, Inc. | $16.80 | 1 |
| EVOKE PHARMA, INC. | $16.56 | 1 |
| Madrigal Pharmaceuticals | $13.99 | 1 |
By program year
Records — PY2024 (47)
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- Generated from: OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.
Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.