Samir Macwan, MD
Neuromuscular Medicine · Rancho Mirage, CANPI 1265558753
Payments from drug & device makers
Across 1,752 payments — averaging $771.00 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Argenx US, Inc.$526K
- AstraZeneca$253K
- AbbVie$231K
- UCB, Inc.$155K
- MDD US Operations, LLC$75K
- Grifols USA, LLC$64K
- plus $47K from 30 others
Across 7 payments — averaging $1572.51 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.
- Argenx US, Inc.$7K
- Takeda Pharmaceuticals U.S.A., Inc.$4K
What the payments were for
- Consulting fees$133,68314%
- Speaking & faculty fees$684,20970%
- Travel & lodging$124,20313%
- Food & beverage$41,0834%
- Education$900%
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
$1,350,795 in reported general payments places this provider in the 85th percentile of 44 neuromuscular medicine 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 |
|---|---|---|
| PanzygaImmun Glob G(Igg)-Ifas/Glycine | 252 | $4,024,237 |
| Gamunex-CImmune Globul G/Gly/Iga Avg 46 | 325 | $2,570,321 |
| Vyvgart HytruloEfgartigimod-Hyaluronidas-Qvfc | 42 | $2,062,794 |
| Gammagard LiquidImmun Glob G(Igg)/Gly/Iga Ov50 | 107 | $1,709,794 |
| SolirisEculizumab | 54 | $1,430,639 |
| FirdapseAmifampridine Phosphate | 40 | $1,422,389 |
| GammakedImmune Globul G/Gly/Iga Avg 46 | 85 | $1,103,542 |
| OctagamImmun Globg(Igg)/Malt/Iga Ov50 | 76 | $1,036,246 |
| GammaplexImmun Glob G(Igg)/Gly/Iga 0-50 | 52 | $940,541 |
| PrivigenImmun Glob G(Igg)/Pro/Iga 0-50 | 60 | $754,226 |
| XembifyImmune Globulin,gamma(Igg)klhw | 41 | $626,308 |
| ZilbrysqZilucoplan Sodium | 12 | $465,759 |
| NortheraDroxidopa | 13 | $279,386 |
| HizentraImmun Glob G(Igg)/Pro/Iga 0-50 | 12 | $51,958 |
| Nurtec OdtRimegepant Sulfate | 16 | $29,198 |
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 |
|---|---|---|
| PfizerPanzyga, Octagam, Nurtec Odt | $2,408 | $5,089,681344 claims |
| Grifols USA, LLCGamunex-C, Xembify | $64,027 | $3,196,629366 claims |
| Argenx US, Inc.Vyvgart Hytrulo | $526,304 | $2,062,79442 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Gammagard Liquid | $626 | $1,709,794107 claims |
| AstraZenecaSoliris | $253,183 | $1,430,63954 claims |
| Catalyst Pharmaceuticals, Inc.Firdapse | $10,257 | $1,422,38940 claims |
| Bio Products Laboratory USA, Inc.Gammaplex | $11 | $940,54152 claims |
| CSL BehringPrivigen, Hizentra | $201 | $806,18472 claims |
| UCB, Inc.Zilbrysq | $154,565 | $465,75912 claims |
| Lundbeck LLCNorthera | $430 | $279,38613 claims |
| AbbVieQulipta | $230,694 | $23,15813 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 85th percentile of 44 neuromuscular medicine providers in California.
Other neuromuscular medicine in Rancho Mirage
- John DayStanford$14.4M
- Tahseen MozaffarOrange$3.2M
- Ali HabibOrange$1.6M
- Namita GoyalOrange$1.5M
- Jeffrey RosenfeldFresno$1.5M
- Ana Tesi RochaPalo Alto$725K
- Jacinda SampsonStanford$377K
- Marwa KaiseyWest Hollywood$305K
- Steven CramerLos Angeles$206K
- Jeffrey MullenOrange$169K
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.