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Ramesh Nathan, MD

Infectious Disease · Thousand Oaks, CANPI 1215025291

Payments from drug & device makers

$2,249,237in general payments, 2019–2025

Across 72 payments — averaging $31,239 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • Eli Lilly$2.2M
  • Tetraphase Pharmaceuticals, Inc.$8K
  • Merck$2K
  • AbbVie$2K
  • Melinta Therapeutics, LLC$115
  • Ferring Pharmaceuticals Inc.$101
  • plus $663 from 13 others
$270,675in research payments, 2019–2025

Across 5 payments — averaging $54,135 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.

  • Eli Lilly$271K

What the payments were for

  • Consulting fees$1,60013%
  • Speaking & faculty fees$7,33760%
  • Travel & lodging$1,68914%
  • Food & beverage$1,58113%
  • Education$280%

General payments by program year

19
20
21
22
23
24
25

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

$2,249,237 in reported general payments places this provider in the 95th percentile of 856 infectious disease providers in California.

See all infectious disease providers in California

Medicare billing

Part B allowed, 2024
$678,529
Medicare patients
691
Services billed
70,291

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

DrugClaimsCost to plans & patients
JulucaDolutegravir/Rilpivirine13$45,308
VemlidyTenofovir Alafenamide12$15,795
EliquisApixaban15$12,719
ErtapenemErtapenem Sodium17$8,579
Cefepime Hcl16$7,360
FarxigaDapagliflozin Propanediol11$6,552
Fluconazole39$5,976
DapagliflozinDapagliflozin Propanediol12$5,972
Voriconazole22$4,006
Daptomycin11$3,717
Methenamine Hippurate32$3,594
Advair DiskusFluticasone Propion/Salmeterol13$3,387
CeftriaxoneCeftriaxone Sodium32$2,508
SynthroidLevothyroxine Sodium47$2,287
JanuviaSitagliptin Phosphate11$1,909

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.

CompanyPaid to this providerPart D cost of their drugs
Viiv Healthcare CompanyJuluca$86$45,30813 claims
GileadVemlidy$52$15,79512 claims
AbbVieSynthroid$1,682$2,28747 claims
MerckJanuvia$1,697$1,90911 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 856 infectious disease providers in California.

Other infectious disease in Thousand Oaks

See the full list for California

Where these figures come from

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