Sherif Ammar, MD
Otolaryngology · Riverside, CANPI 1497746598
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 93 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 30 manufacturers, the largest accounting for just 17.9% — the pattern of someone who eats at a lot of different presentations.
Across 93 payments — averaging $23.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$394
- Johnson & Johnson$244
- Sun Pharmaceutical Industries Inc.$136
- Takeda Pharmaceuticals U.S.A., Inc.$135
- AstraZeneca$126
- Lilly USA, LLC$107
- plus $1K from 24 others
What the payments were for
- Food & beverage$2,205100%
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 |
|---|---|---|
| Stryker | 6 | $394 |
| Johnson & Johnson | 15 | $244 |
| Sun Pharmaceutical Industries Inc. | 7 | $136 |
| Takeda Pharmaceuticals U.S.A., Inc. | 6 | $135 |
| AstraZeneca | 5 | $126 |
| Lilly USA, LLC | 5 | $107 |
| Blueprint Medicines Corporation | 4 | $107 |
| Seagen Inc. | 4 | $99 |
| GSK | 4 | $91 |
| Amgen | 4 | $82 |
| Sobi, Inc | 3 | $78 |
| Regeneron Healthcare Solutions, Inc. | 3 | $68 |
| Beigene USA, Inc. | 2 | $59 |
| UCB, Inc. | 2 | $52 |
| ADC Therapeutics America, Inc. | 2 | $48 |
| Helsinn Therapeutics (U.S.), Inc. | 3 | $44 |
| E.r. Squibb & Sons, L.L.C. | 2 | $39 |
| Exelixis Inc. | 2 | $37 |
| Daiichi Sankyo Inc. | 2 | $32 |
| Smith+Nephew | 2 | $30 |
| Recordati_rare_diseases_inc. | 1 | $24 |
| Biofrontera Inc. | 1 | $22 |
| Sanofi | 1 | $22 |
| EMD Serono, Inc. | 1 | $20 |
| Deciphera Pharmaceuticals Inc. | 1 | $20 |
| Puma Biotechnology, Inc. | 1 | $20 |
| Merck | 1 | $18 |
| Tesaro, Inc. | 1 | $18 |
| Agios Pharmaceuticals, Inc. | 1 | $16 |
| Dermira, Inc. | 1 | $15 |
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.
- ENTELLUS - XPRESS ENT DILATION SYSTEM$170
- ENTELLUS - FIAGON SINUS NAVIGATION SYSTEM CONSUMABLES$144
How this compares
$2,205 in reported general payments places this provider in the 65th percentile of 1,021 otolaryngology providers in California.
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 |
|---|---|---|
| Cephalexin | 278 | $896 |
| Azelastine Hcl | 26 | $693 |
| Doxycycline Hyclate | 35 | $290 |
Paid to pharmacies, not to this prescriber.
Other otolaryngology in Riverside
- Brian WeeksSan Diego$924K
- Randall OwRoseville$613K
- Amir MoradiVista$389K
- Keith BlackwellLos Angeles$349K
- Kalpna DurairajSun Valley$348K
- Todd MillerNewport Beach$259K
- Jeffrey SuhLos Angeles$223K
- Dennis TangLos Angeles$209K
- Jeffrey FeinfieldThousand Oaks$160K
- Jonathan SykesGranite Bay$148K
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.