Xaralambos Zervos, DO
Hepatology · Orlando, FLNPI 1811187925
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (51.2%), consulting fees and education — rather than concentrated in one kind of arrangement. 13 manufacturers reported payments, led by Gilead at 59.9% of the total. Reporting peaked in 2019 at $1,939 and has fallen 78.6% since, to $414 in 2025.
Across 46 payments — averaging $65.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Gilead$2K
- AbbVie$250
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$170
- Intercept Pharmaceuticals, Inc.$151
- Mallinckrodt Hospital Products Inc.$138
- Janssen Scientific Affairs, LLC$121
- plus $378 from 7 others
Across 51 payments — averaging $3556.42 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.
- Gilead$139K
- Bausch Health US, LLC$34K
- Intercept Pharmaceuticals, Inc.$8K
What the payments were for
- Consulting fees$1,39046%
- Food & beverage$1,54551%
- Education$803%
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.
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
Too few hepatology providers in Floridato place this figure against a meaningful peer group, so we don't.
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 |
|---|---|---|
| XifaxanRifaximin | 74 | $241,823 |
| Ursodiol | 115 | $19,217 |
| Tacrolimus | 11 | $1,963 |
| Azathioprine | 35 | $1,746 |
| Lactulose | 47 | $1,573 |
| Neomycin Sulfate | 15 | $1,472 |
| Tenofovir Disoproxil Fumarate | 15 | $1,136 |
| Mycophenolate Mofetil | 14 | $717 |
| Spironolactone | 54 | $701 |
| Entecavir | 13 | $441 |
| Amiloride Hcl | 17 | $280 |
| Furosemide | 56 | $244 |
| Pantoprazole Sodium | 16 | $202 |
| Carvedilol | 22 | $164 |
| Omeprazole | 13 | $154 |
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 |
|---|---|---|
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLCXifaxan | $170 | $241,82374 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. There are too few hepatology providers in Floridaon file to place this against a meaningful peer group, so we don't.
Other hepatology in Orlando
- Shady GuirguisOrlando$100K
- Arvind Rangarajan MuraliOrlando$46K
- Peter GergesOrlando$1K
- Brett FortuneMiami$147K
- Cynthia LevyMiami$88K
- Miguel MalespinTampa$64K
- Basem AlkurdiTampa$18K
- Christopher ObrienWeston$18K
- Flavia MendesMiami$6K
- Leopoldo ArosemenaMiami$4K
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.