Has David Riker, MD received payments from drug or device companies?

Yes. Drug and device makers reported $31,570 in general payments to David Riker, MD across 42 transactions between 2019–2025. Most Open Payments records nationally are meals worth under $20; a reported payment is not evidence of wrongdoing.

Does a payment mean David Riker, MD did something wrong?

No. Federal law requires drug and device makers to report almost every transfer of value to a physician, including a $14 sandwich at a lunch presentation. Consulting fees, research funding and royalties to device inventors are ordinary, legal parts of medicine. This site reports what was disclosed; it makes no allegation.

Where does this information about David Riker, MD come from?

The U.S. Centers for Medicare & Medicaid Services. Payments come from Open Payments, published under the Physician Payments Sunshine Act. Billing and prescribing figures come from the Medicare Physician & Other Practitioners and Part D Prescriber public use files for 2024.

David Riker, MD

Internal Medicine · San Diego, CANPI 1164405528

Payments from drug & device makers

What this record shows

This record is dominated by speaking fees: $28,443 of the $31,570 with a category attached, or 90.1%. Cook Incorporated accounts for 90.3% of it on its own, with 5 other manufacturers making up the rest. Among internal medicine 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.

$31,570in general payments, 2019–2025

Across 42 payments — averaging $751.66 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Cook Incorporated$28K
Cook Medical LLC$2K
Intuitive Surgical$1K
Breathe Technologies, Inc.$140
Pulmonx Corporation$116
Boston Scientific$34

$58,613in research payments, 2019–2025

Across 12 payments — averaging $4884.45 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.

GSK$43K
Novartis$16K

What the payments were for

Speaking & faculty fees$28,44390%
Travel & lodging$1,8886%
Food & beverage$1,2404%

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
Cook Incorporated	9	$28,492
Cook Medical LLC	18	$1,706
Intuitive Surgical	4	$1,082
Breathe Technologies, Inc.	6	$140
Pulmonx Corporation	4	$116
Boston Scientific	1	$34

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.

Blue Rhino$21,490
Cook Medical Percutaneous Tracheostomy$4,356
Cook Medical Ciaglia Blue Rhino$3,500
Da Vinci Surgical System$1,076
Wayne$113

How this compares

$31,570 in reported general payments places this provider in the 95th percentile of 13,581 internal medicine providers in California.

See all internal medicine providers in California →

Medicare billing

Part B allowed, 2024

$710,381

Medicare patients

245

Services billed

5,923

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	20	$7,181
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate	108	$1,638
Levetiracetam	11	$1,196
Scopolamine	11	$958
Tolterodine Tartrate ErTolterodine Tartrate	12	$625
Potassium Chloride	13	$577
Modafinil	12	$491
Gabapentin	19	$348
Pregabalin	19	$300
Venlafaxine Hcl ErVenlafaxine Hcl	13	$243
Hydroxyzine Hcl	13	$199
Metformin Hcl	14	$183
Albuterol Sulfate	18	$173
Trazodone Hcl	12	$155
Atorvastatin Calcium	13	$153

Paid to pharmacies, not to this prescriber.

Other internal medicine in San Diego

Hatim HusainSan Diego$2M
Steven EdelmanSan Diego$863K
Christian RamersSan Diego$675K
Adam ZweigSan Diego$421K
James BreitmeyerSan Diego$227K
Andrew ChengSouth San Francisco$55.1M
Tung NgoNewport Beach$4.9M
Christian EversullStanford$2.9M
Christian SandrockSacramento$2.1M
Teck LingPalo Alto$1.1M

See the full list for California →

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.

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