Melissa Loja, MD
Vascular Surgery · Fairfield, CANPI 1578826749
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (57.5%), travel and lodging and speaking fees — rather than concentrated in one kind of arrangement. Shockwave Medical, Inc accounts for 95.1% of it on its own, with 30 other manufacturers making up the rest. 2025 is the largest year on record at $144,670, more than ten times the $4,267 reported in 2019. Among vascular surgery clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 266 payments — averaging $1020.92 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Shockwave Medical, Inc$258K
- Abbott$5K
- Medtronic$4K
- Bard Peripheral Vascular, Inc.$1K
- Boston Scientific$584
- Reflow Medical Inc$517
- plus $2K from 25 others
What the payments were for
- Consulting fees$156,22558%
- Speaking & faculty fees$25,85010%
- Travel & lodging$80,85630%
- Food & beverage$8,6343%
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 |
|---|---|---|
| Shockwave Medical, Inc | 117 | $258,351 |
| Abbott | 17 | $5,038 |
| Medtronic(2 entities) | 36 | $3,768 |
| Bard Peripheral Vascular, Inc. | 22 | $1,346 |
| Boston Scientific | 12 | $584 |
| Reflow Medical Inc | 5 | $517 |
| W. L. Gore & Associates, Inc. | 3 | $318 |
| Cook Medical LLC | 2 | $207 |
| Johnson & Johnson(2 entities) | 5 | $205 |
| Philips North America LLC | 8 | $147 |
| Inari Medical, Inc. | 2 | $145 |
| Biotronik Inc. | 1 | $145 |
| Amgen | 7 | $133 |
| Biotissue Holdings Inc. | 6 | $127 |
| Stryker | 4 | $92 |
| Viz.ai, Inc. | 1 | $87 |
| Kiniksa Pharmaceuticals, Ltd. | 2 | $46 |
| Terumo Medical Corporation | 2 | $43 |
| Cardiovascular Systems Inc. | 2 | $41 |
| Actelion Pharmaceuticals US, Inc. | 1 | $25 |
| Derma Sciences, Inc. | 1 | $24 |
| E.r. Squibb & Sons, L.L.C. | 1 | $23 |
| Venclose Inc. | 1 | $23 |
| Bayer | 1 | $19 |
| Mallinckrodt Enterprises LLC | 1 | $19 |
| Astellas Pharma US Inc | 1 | $18 |
| Penumbra, Inc. | 1 | $17 |
| Pfizer | 1 | $16 |
| Esperion Therapeutics, Inc. | 1 | $15 |
| Convatec Inc. | 1 | $13 |
| AstraZeneca | 1 | $12 |
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.
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$246,334
- Vascular Lithotripsy$10,618
- AMPLATZER AMULET$3,000
- SUPERA$974
- IN.PACT Admiral$796
- Ellipsys$626
- ENDURANT IIS$562
- ESPRIT$324
- GORE TAG Thoracic Branch Endoprosthesis$298
- HI-TORQUE COMMAND$259
- Valiant Captivia$209
- Crosser iQ$158
- Zenith Spiral-Z$156
- VenaSeal$153
- ELUVIA$147
- Passeo-18$145
- XARELTO$125
How this compares
$271,565 in reported general payments places this provider in the 95th percentile of 519 vascular surgery 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 |
|---|---|---|
| EliquisApixaban | 40 | $30,896 |
| ClopidogrelClopidogrel Bisulfate | 53 | $398 |
| Atorvastatin Calcium | 14 | $188 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 27 | $177 |
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 |
|---|---|---|
| PfizerEliquis | $16 | $30,89640 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 519 vascular surgery providers in California.
Other vascular surgery in Fairfield
- Son DuongFountain Valley$503K
- Venita ChandraPalo Alto$488K
- Sukgu HanLos Angeles$477K
- Leigh Ann ObanionFresno$469K
- Trevor DerderianRancho Mirage$359K
- Karthikeshwar KasirajanPalo Alto$349K
- Johnathon RolloLos Angeles$337K
- Jason LeePalo Alto$228K
- John LaneSan Diego$212K
- Sammy EghbaliehPorter Ranch$207K
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.