Deepak Thiagarajan, MD
Geriatric Medicine · Rancho Cucamonga, CANPI 1205052990
Payments from drug & device makers
Across 4 payments — averaging $18.61 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novartis$44
- E.r. Squibb & Sons, L.L.C.$16
- AbbVie$14
What the payments were for
- Food & beverage$74100%
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 |
|---|---|---|
| Novartis | 2 | $44 |
| E.r. Squibb & Sons, L.L.C. | 1 | $16 |
| AbbVie | 1 | $14 |
How this compares
$74 in reported general payments places this provider in the 35th percentile of 494 geriatric 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 |
|---|---|---|
| EliquisApixaban | 106 | $37,476 |
| RybelsusSemaglutide | 14 | $11,489 |
| JardianceEmpagliflozin | 12 | $9,163 |
| Pantoprazole Sodium | 99 | $7,638 |
| Levetiracetam | 108 | $5,164 |
| ErtapenemErtapenem Sodium | 11 | $4,604 |
| Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog | 18 | $4,484 |
| FarxigaDapagliflozin Propanediol | 11 | $3,217 |
| Atorvastatin Calcium | 235 | $2,995 |
| Gabapentin | 134 | $2,822 |
| Lantus SolostarInsulin Glargine,hum.Rec.Anlog | 29 | $2,488 |
| Midodrine Hcl | 20 | $2,464 |
| Insulin Lispro Kwikpen U-100Insulin Lispro | 15 | $2,120 |
| Scopolamine | 22 | $1,941 |
| Lactulose | 41 | $1,912 |
Paid to pharmacies, not to this prescriber.
Other geriatric medicine in Rancho Cucamonga
- Paul AisenSan Diego$15.7M
- Kanagaratnam SivalingamLancaster$2.4M
- Wayne ChenLos Angeles$2M
- Robert FeldmanLaguna Hills$1.9M
- Isabel PereiraFountain Valley$1.2M
- Timothy ParenteauOakland$221K
- Oscar ChienSan Gabriel$208K
- Anna ChangSan Francisco$170K
- Anders NybergSan Diego$163K
- Christopher SalemIrvine$113K
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.