Raffi Tachdjian, MD
Allergy & Immunology · Santa Monica, CANPI 1447376454
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $2,391,732 of the $3,654,640 with a category attached, or 65.4%. It is spread thinly across 41 manufacturers, the largest accounting for just 16.8%. 2025 is the largest year on record at $1,092,012, 2.2 times the $499,784 reported in 2019. Among allergy & immunology 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 3,730 payments — averaging $979.80 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- CSL Behring$615K
- Pharming Healthcare, Inc.$530K
- Regeneron Healthcare Solutions, Inc.$424K
- Sanofi$385K
- Biocryst US Sales Co., LLC$248K
- Takeda Pharmaceuticals U.S.A., Inc.$230K
- plus $1.2M from 35 others
Across 194 payments — averaging $3532.78 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.
- CSL Behring$273K
- Biocryst Pharmaceuticals, Inc.$145K
- Shire North American Group Inc$110K
- Takeda Pharmaceuticals U.S.A., Inc.$105K
- Regeneron$20K
- GSK$18K
- plus $15K from 2 others
What the payments were for
- Consulting fees$529,02814%
- Speaking & faculty fees$2,391,73265%
- Travel & lodging$430,56012%
- Food & beverage$80,6372%
- Education$222,6846%
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
$3,654,640 in reported general payments places this provider in the 95th percentile of 426 allergy & immunology 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.
Other allergy & immunology in Santa Monica
- Lorraine AndersonSanta Monica$55K
- Bob GengSan Diego$3.3M
- Vinay MehtaLaguna Niguel$1.3M
- Andrew WhiteSan Diego$752K
- Marc RiedlSan Diego$725K
- Katharine WoessnerSan Diego$581K
- Brian Modenala Jolla$453K
- Heena Shah PatelUpland$428K
- Jacob OffenbergerGranada Hills$419K
- Myron LiebhaberSanta Barbara$354K
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.