Has John Berdahl, MD received payments from drug or device companies?

Yes. Drug and device makers reported $1,211,852 in general payments to John Berdahl, MD across 638 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 John Berdahl, 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 John Berdahl, 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.

John Berdahl, MD

Ophthalmology · Sioux Falls, SDNPI 1871761577

Payments from drug & device makers

What this record shows

This record is dominated by consulting fees: $890,864 of the $1,211,852 with a category attached, or 73.5%. 30 manufacturers reported payments, led by Alcon at 55.9% of the total. Among ophthalmology clinicians in SD 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.

$1,211,852in general payments, 2019–2025

Across 638 payments — averaging $1899.45 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Alcon$677K
Alcon Research LLC$231K
Glaukos Corporation$169K
Rxsight Inc$82K
AbbVie$21K
Johnson & Johnson Surgical Vision, Inc.$6K
plus $26K from 24 others

$4,187,295in research payments, 2019–2025

Across 1,043 payments — averaging $4014.66 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.

Glaukos Corporation$1.9M
Alcon Research LLC$1.1M
AbbVie$437K
Rxsight Inc$327K
Ocular Therapeutix, Inc.$179K
Avedro Inc.$173K
plus $67K from 3 others

What the payments were for

Royalty or licence$136,00011%
Consulting fees$890,86474%
Speaking & faculty fees$140,29212%
Travel & lodging$13,5791%
Food & beverage$15,0421%
Other$16,0751%

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
Alcon	256	$677,205
Alcon Research LLC	89	$231,489
Glaukos Corporation	115	$168,750
Rxsight Inc	10	$81,570
AbbVie(2 entities)	39	$21,041
Johnson & Johnson Surgical Vision, Inc.	11	$6,280
Ocular Therapeutix, Inc.	7	$5,634
NEW World Medical,inc.	5	$3,912
Avedro Inc.	1	$3,500
Sight Sciences, Inc.	10	$2,944
Tarsus Pharmaceuticals, Inc.	7	$1,764
Aerie Pharmaceuticals, Inc.	2	$1,679
Carl Zeiss Meditec, Inc.	8	$1,674
Bausch & Lomb Americas Inc.	9	$1,632
Harrow Eye, LLC	5	$1,124
Sun Pharmaceutical Industries Inc.	9	$332
Carl Zeiss Meditec USA, Inc.	7	$321
Oyster Point Pharma, Inc.	7	$191
Mallinckrodt Hospital Products Inc.	5	$138
Amgen(2 entities)	7	$117
Novartis	7	$117
Rayner Intraocular Lenses Limited	5	$111
Dompe US, Inc.	5	$89
Biotissue Holdings Inc.	3	$73
Tearlab Corp	2	$41
Omeros Corporation	2	$38
Kala Pharmaceuticals, Inc.	2	$35
Bausch & Lomb, A Division Of Bausch Health US, LLC	1	$23
Lensar, Inc.	1	$15
Carl Zeiss Meditec Cataract Technology Inc.	1	$13

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.

AcrySof IQ PanOptix$113,600
AcrySof IQ PanOptix UV IOL$84,015
RXSIGHT CONTACT LENS$80,153
RXSIGHT INJECTOR CARTRIDGE$80,153
RXSIGHT INJECTOR HANDPIECE$80,153
RXSIGHT LIGHT DELIVERY DEVICE (LDD)$80,153
LIGHT ADJUSTABLE LENS (LAL)$74,653
AcrySof IQ VIVITY IOL$63,225
Clareon$48,505
iStent Trabecular Micro-Bypass Stent System$34,283
AcrySof$33,763
AcrySof IQ VIVITY$33,293
Centurion$29,658
ORA$21,625
iStent inject Trabecular Micro-Bypass Stent System$21,500
iDose$15,369
ARGOS$12,204
Unity$11,895
Epioxa$11,257
iDose TR$9,445

How this compares

$1,211,852 in reported general payments places this provider in the 95th percentile of 52 ophthalmology providers in South Dakota.

See all ophthalmology providers in South Dakota →

Medicare billing

Part B allowed, 2024

$829,922

Medicare patients

855

Services billed

2,729

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 ophthalmology in Sioux Falls

Vance ThompsonSioux Falls$1.9M
Daniel TerveenSioux Falls$521K
Tanner FergusonSioux Falls$49K
Alison TendlerSioux Falls$31K
Brent KramerSioux Falls$26K
Jed AssamSioux Falls$18K
Anthony MaiSioux Falls$8K
Ryan GeraetsSioux Falls$7K
Eric ThomasSioux Falls$7K
Yujia ZhouSioux Falls$3K

See the full list for South Dakota →

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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