Has Maria Miguel Yen, MD received payments from drug or device companies?

Yes. Drug and device makers reported $986 in general payments to Maria Miguel Yen, MD across 10 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 Maria Miguel Yen, 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 Maria Miguel Yen, 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.

Maria Miguel Yen, MD

Nephrology · Sacramento, CANPI 1740266626

Payments from drug & device makers

What this record shows

Almost everything reported here is food and beverage — 90.2% of the total across 10 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 8 manufacturers reported payments, led by Takeda Pharmaceuticals U.S.A., Inc. at 25.0% of the total. 2025 is the largest year on record at $324, 2.3 times the $144 reported in 2019. That places this record below the midpoint for nephrology clinicians in CA, where the typical reported total is $1,018.

$986in general payments, 2019–2025

Across 10 payments — averaging $98.63 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Takeda Pharmaceuticals U.S.A., Inc.$246
Sanofi-aventis U.S. LLC$159
Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$123
E.r. Squibb & Sons, L.L.C.$115
AstraZeneca$113
Novartis$104
plus $126 from 2 others

What the payments were for

Food & beverage$89090%
Education$9710%

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
Takeda Pharmaceuticals U.S.A., Inc.	2	$246
Sanofi-aventis U.S. LLC	2	$159
Salix Pharmaceuticals, A Division Of Bausch Health US, LLC	1	$123
E.r. Squibb & Sons, L.L.C.	1	$115
AstraZeneca	1	$113
Novartis	1	$104
Veloxis Pharmaceuticals, Inc.	1	$97
Sanofi	1	$29

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

$986 in reported general payments places this provider in the 45th percentile of 1,341 nephrology providers in California.

See all nephrology providers in California →

Medicare billing

Part B allowed, 2024

$29,029

Medicare patients

109

Services billed

380

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
Cinacalcet Hcl	71	$10,128
Tacrolimus	21	$5,494
Leflunomide	12	$2,279
Mycophenolate Mofetil	15	$2,036
Valganciclovir Hcl	13	$1,791
Cyclosporine ModifiedCyclosporine, Modified	12	$1,061
Fluconazole	18	$769
Labetalol Hcl	14	$394
Famotidine	57	$336
Tamsulosin Hcl	41	$297
Amlodipine Besylate	70	$286
Carvedilol	39	$279
Pravastatin Sodium	47	$273
Atorvastatin Calcium	44	$192
Metoprolol Tartrate	34	$175

Paid to pharmacies, not to this prescriber.

Other nephrology in Sacramento

Jose MorfinSacramento$1M
Naveen AtraySacramento$51K
Anjay RastogiLos Angeles$2.2M
Glenn ChertowStanford$2M
Luis AlvarezPalo Alto$1.8M
Rodolfo BatarseRancho Mirage$910K
Vandana MathurWoodside$769K
Yasir QaziOrange$618K
Rafael VillicanaLoma Linda$610K
Sunil PatelApple Valley$509K

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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