Has Mary Chamberlain, PA received payments from drug or device companies?

Yes. Drug and device makers reported $1,447 in general payments to Mary Chamberlain, PA across 61 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 Mary Chamberlain, PA 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 Mary Chamberlain, PA 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.

Mary Chamberlain, PA

Physician Assistant · Greenwood Village, CONPI 1487112876

Payments from drug & device makers

$1,447in general payments, 2019–2025

Across 61 payments — averaging $23.73 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

AbbVie$324
Teva Pharmaceuticals USA, Inc.$236
Neurocrine Biosciences, Inc.$184
Alkermes, Inc.$164
Takeda Pharmaceuticals U.S.A., Inc.$151
ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$95
plus $295 from 7 others

What the payments were for

Food & beverage$1,447100%

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	14	$324
Teva Pharmaceuticals USA, Inc.	11	$236
Neurocrine Biosciences, Inc.	7	$184
Alkermes, Inc.	4	$164
Takeda Pharmaceuticals U.S.A., Inc.	7	$151
ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)	5	$95
Otsuka America Pharmaceutical, Inc.	5	$94
Tris Pharma Inc	1	$60
E.r. Squibb & Sons, L.L.C.	2	$46
Tempus AI, Inc	2	$34
Johnson & Johnson	1	$25
Noven Therapeutics, LLC	1	$19
Idorsia Pharmaceuticals US Inc	1	$16

How this compares

$1,447 in reported general payments places this provider in the 80th percentile of 2,849 physician assistant providers in Colorado.

See all physician assistant providers in Colorado →

Medicare billing

Part B allowed, 2024

$5,403

Medicare patients

Services billed

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
Aripiprazole	29	$2,281
Quetiapine Fumarate	31	$951
Buspirone Hcl	29	$837
Bupropion XlBupropion Hcl	22	$427
Hydroxyzine Hcl	12	$420
Haloperidol	13	$367
Olanzapine	21	$345
Prazosin Hcl	12	$321
Risperidone	19	$244
Clonazepam	15	$225
Mirtazapine	16	$158
Lamotrigine	13	$138
Venlafaxine Hcl ErVenlafaxine Hcl	15	$132
Sertraline Hcl	27	$115
Lithium Carbonate ErLithium Carbonate	11	$106

Paid to pharmacies, not to this prescriber.

Other physician assistant in Greenwood Village

Neekan AeiniGreenwood Village$234K
Amanda DobilGreenwood Village$10K
Donald MooreEnglewood$246K
Korby HowellCortez$182K
Heather FinlaysonLittleton$180K
Kristen LervikDenver$131K
Marissa Moritz-GuzikLouisville$94K
Clayton LabaumeDurango$87K
Emily FrischDenver$79K
Daniel HumerLone Tree$69K

See the full list for Colorado →

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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