Has Ainah Tan, MD received payments from drug or device companies?

Yes. Drug and device makers reported $1,898 in general payments to Ainah Tan, MD across 68 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 Ainah Tan, 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 Ainah Tan, 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.

Ainah Tan, MD

Dermatology · Glen Ellyn, ILNPI 1215371810

Payments from drug & device makers

What this record shows

This record is dominated by food and beverage: $1,703 of the $1,898 with a category attached, or 89.7%. It is spread thinly across 15 manufacturers, the largest accounting for just 23.1% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $683, 3.4 times the $202 reported in 2019. That places this record below the midpoint for dermatology clinicians in IL, where the typical reported total is $1,774.

$1,898in general payments, 2019–2025

Across 68 payments — averaging $27.90 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

AbbVie$439
Galderma Laboratories, L.p.$378
Johnson & Johnson$235
Novartis$179
Pfizer$149
Sun Pharmaceutical Industries Inc.$123
plus $394 from 9 others

What the payments were for

Food & beverage$1,70390%
Education$19510%

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
AbbVie(2 entities)	13	$439
Galderma Laboratories, L.p.	12	$378
Johnson & Johnson	5	$235
Novartis	9	$179
Pfizer	8	$149
Sun Pharmaceutical Industries Inc.	1	$123
Dermavant Sciences, Inc.	4	$84
Amgen	3	$60
Arcutis Biotherapeutics, Inc.	4	$59
UCB, Inc.	2	$54
Sanofi	2	$50
E.r. Squibb & Sons, L.L.C.	2	$34
LEO Pharma Inc.	1	$18
Lilly USA, LLC	1	$18
Sandoz	1	$16

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.

ILUMYA$123
Skyrizi$121
Rinvoq$117

How this compares

$1,898 in reported general payments places this provider in the 50th percentile of 606 dermatology providers in Illinois.

See all dermatology providers in Illinois →

Medicare billing

Part B allowed, 2024

$181,333

Medicare patients

714

Services billed

2,227

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
Skyrizi PenRisankizumab-Rzaa	11	$226,021
Dupixent PenDupilumab	13	$50,925
Clobetasol Propionate	148	$6,126
Tacrolimus	23	$3,145
Metronidazole	41	$2,223
Ketoconazole	104	$1,696
Triamcinolone Acetonide	138	$1,392
Clindamycin Phosphate	19	$1,204
Nystatin	55	$707
Doxycycline Monohydrate	20	$677
Betamethasone Dipropionate	14	$549
MethotrexateMethotrexate Sodium	12	$484
Doxycycline Hyclate	16	$399
Alclometasone Dipropionate	21	$324
Mometasone Furoate	22	$310

Paid to pharmacies, not to this prescriber.

Other dermatology in Glen Ellyn

Ahmad AminNaperville$4.1M
Raj ChovatiyaChicago$3.6M
George LewittNorthbrook$3M
Peter LioChicago$2.4M
Elizabeth KiracofeChicago$1.6M
Lana SchmidtEffingham$1.3M
Melissa AbramsVernon Hills$600K
Carolyn JacobChicago$566K
Walter LiszewskiChicago$414K
Emily RubensteinLincolnshire$359K

See the full list for Illinois →

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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