Tamara Onan
Physician Assistant · Newport Beach, CANPI 1477837862
Payments from drug & device makers
Across 532 payments — averaging $22.39 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$2K
- Alkermes, Inc.$900
- Neurocrine Biosciences, Inc.$868
- Vanda Pharmaceuticals Inc.$811
- Ironshore Pharmaceuticals Inc.$730
- AbbVie$679
- plus $6K from 24 others
What the payments were for
- Food & beverage$11,902100%
- Education$120%
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 |
|---|---|---|
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 89 | $1,957 |
| Alkermes, Inc. | 41 | $900 |
| Neurocrine Biosciences, Inc. | 34 | $868 |
| Vanda Pharmaceuticals Inc. | 25 | $811 |
| Ironshore Pharmaceuticals Inc. | 37 | $730 |
| AbbVie | 33 | $679 |
| Otsuka America Pharmaceutical, Inc. | 36 | $641 |
| Lundbeck LLC | 33 | $583 |
| Noven Therapeutics, LLC | 28 | $576 |
| Axsome Therapeutics, Inc. | 26 | $567 |
| Johnson & Johnson | 13 | $529 |
| Teva Pharmaceuticals USA, Inc. | 25 | $495 |
| E.r. Squibb & Sons, L.L.C. | 13 | $475 |
| Tris Pharma Inc | 12 | $353 |
| Corium, LLC | 15 | $331 |
| Takeda Pharmaceuticals U.S.A., Inc. | 11 | $209 |
| Idorsia Pharmaceuticals US Inc | 11 | $179 |
| Bausch Health US, LLC | 7 | $140 |
| OWP Pharmaceuticals, Inc. | 7 | $136 |
| Indivior Inc. | 6 | $130 |
| Lilly USA, LLC | 6 | $118 |
| Collegium Pharmaceutical, Inc. | 5 | $107 |
| Novo Nordisk | 4 | $87 |
| Supernus Pharmaceuticals, Inc. | 4 | $83 |
| AstraZeneca | 4 | $67 |
| Sunovion Pharmaceuticals Inc. | 2 | $60 |
| Almatica Pharma LLC | 1 | $31 |
| Neos Therapeutics, LP | 2 | $31 |
| Avion Pharmaceuticals | 1 | $23 |
| Braeburn Inc. | 1 | $18 |
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.
- SPRAVATO$150
- Dyanavel XR$131
- COBENFY$120
- CAPLYTA$119
How this compares
$11,913 in reported general payments places this provider in the 95th percentile of 10,423 physician assistant providers in California.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| SpravatoEsketamine Hcl | 31 | $51,140 |
| Lurasidone Hcl | 37 | $15,532 |
| Aripiprazole | 23 | $1,825 |
| Temazepam | 18 | $1,676 |
| Quetiapine Fumarate | 93 | $1,646 |
| Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine | 20 | $1,538 |
| Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine | 34 | $1,129 |
| Duloxetine Hcl | 41 | $852 |
| Lamotrigine | 74 | $720 |
| Gabapentin | 28 | $685 |
| Fluvoxamine Maleate | 17 | $619 |
| Divalproex Sodium | 33 | $425 |
| Olanzapine | 21 | $412 |
| Clonazepam | 92 | $402 |
| Trazodone Hcl | 37 | $329 |
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 |
|---|---|---|
| Johnson & JohnsonSpravato | $529 | $51,14031 claims |
| Lilly USA, LLCOlanzapine | $118 | $41221 claims |
| Almatica Pharma LLCSertraline Hcl | $31 | $6017 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 95th percentile of 10,423 physician assistant providers in California.
Other physician assistant in Newport Beach
- Sally de Castro TilsenNewport Beach$77K
- Mia GattiNewport Beach$72K
- John QuigleyDowney$2.9M
- Andrea NguyenIrvine$1M
- Mikhail AlperMadera$889K
- Erin JensenUpland$716K
- Franklin ClineSacramento$458K
- Carla CrespoMarina del Rey$297K
- Katherine OsakiEl Centro$274K
- Shawna JonesFountain Valley$266K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.