Has Karen Stern, MD received payments from drug or device companies?

Yes. Drug and device makers reported $54,494 in general payments to Karen Stern, MD across 101 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 Karen Stern, 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 Karen Stern, 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.

Karen Stern, MD

Urology · Phoenix, AZNPI 1932461647

Payments from drug & device makers

What this record shows

This record is dominated by consulting fees: $38,588 of the $54,494 with a category attached, or 70.8%. 16 manufacturers reported payments, led by Boston Scientific at 33.4% of the total. Reporting peaked in 2022 at $19,981 and has fallen 58.7% since, to $8,256 in 2025. Among urology clinicians in AZ 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.

$54,494in general payments, 2019–2025

Across 101 payments — averaging $539.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Boston Scientific$18K
Coloplast$13K
C. R. Bard, Inc. & Subsidiaries$5K
Novo Nordisk Health Care AG$4K
Alnylam Pharmaceuticals Inc.$4K
Calyxo, Inc.$3K
plus $7K from 10 others

$92,580in research payments, 2019–2025

Across 10 payments — averaging $9257.98 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.

Calyxo, Inc.$93K

What the payments were for

Consulting fees$38,58871%
Speaking & faculty fees$8,32515%
Travel & lodging$4,1248%
Food & beverage$3,3236%
Education$1350%

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
Boston Scientific	49	$18,215
Coloplast	11	$13,299
C. R. Bard, Inc. & Subsidiaries	2	$5,100
Novo Nordisk Health Care AG	3	$3,603
Alnylam Pharmaceuticals Inc.	3	$3,521
Calyxo, Inc.	12	$3,452
Cook Incorporated	1	$2,325
Intuitive Surgical	4	$1,500
Gyrus ACMI, Inc.	2	$1,460
KARL Storz Endoscopy-america	5	$1,239
Dornier Medtech America, Inc	2	$270
Olympus America Inc.	2	$237
Cook Medical LLC	2	$128
Travere Therapeutics, Inc.	1	$109
Richard Wolf Medical Instruments Corp.	1	$23
Endo Pharmaceuticals Inc.	1	$12

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

$54,494 in reported general payments places this provider in the 95th percentile of 269 urology providers in Arizona.

See all urology providers in Arizona →

Medicare billing

Part B allowed, 2024

$160,611

Medicare patients

425

Services billed

991

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
Tamsulosin Hcl	12	$110

Paid to pharmacies, not to this prescriber.

Other urology in Phoenix

Mitchell HumphreysPhoenix$358K
Daniel JaffeePhoenix$280K
Donald LammPhoenix$80K
Ali BorhanPhoenix$42K
Premal DesaiPhoenix$33K
Yoon HongPhoenix$18K
Amar PatelPhoenix$18K
Scott KalinowskiPhoenix$14K
Elizabeth TourvillePhoenix$14K
Jack AndrewsPhoenix$13K

See the full list for Arizona →

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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