Product Program year 2025 Source: CMS Open Payments

Rytary

Drug Neurology

NDC 64896-662-09

Open in the dashboard

General payments

$5,330,857

46,579 payments

Research payments

$0

0 payments

Through program year 2025, $5,330,857 in general payments and $0 in research payments were reported against Rytary (Neurology).

No combined total These are different kinds of money, reported under different rules. A meal and a clinical trial grant do not add up to anything meaningful, so this site does not add them.

By program year

7 rows
Year Kind Amount Payments
2025 General $3,787 200
2024 General $495,870 7,355
2023 General $315,085 9,379
2022 General $980,563 10,134
2021 General $897,211 7,869
2020 General $931,244 4,542
2019 General $1,707,098 7,100

Breakdown

Who paid General payments · program years 2019–2025
  1. Amneal Pharmaceuticals LLC $5,330,857 46,579 payments
Top recipients General payments · program year 2025
  1. Peter Lin Neurology · Los Gatos, CA $183 5% · 11 payments
  2. Nengchun Huang Neurology · Los Gatos, CA $168 4% · 9 payments
  3. Weiping Yao Lodi, CA $120 3% · 9 payments
  4. Mohammad Kazmi Neurology · Lodi, CA $107 3% · 8 payments
  5. Nadine Yassa Neurology with Special Qualifications in Child Neurology · Roseville, CA $101 3% · 6 payments

The top 5 of the 100 largest recipients; each share is of general payments naming this product in 2025.

The top 25 recipients, free in the app

Specialties paid General payments · program year 2025
  1. Neurology Psychiatry & Neurology $2,275 67% · 65 practitioners
  2. Nurse Practitioner, Family Nurse Practitioner $224 7% · 9 practitioners
  3. Physician Assistant $189 6% · 10 practitioners
  4. Neurology with Special Qualifications in Child Neurology Psychiatry & Neurology $121 4% · 2 practitioners
  5. Nurse Practitioner $94 3% · 4 practitioners

The top 5 of 22 specialties; each share is of general payments naming this product to practitioners with a specialty in 2025. Each practitioner is counted under their primary specialty.

The top 25 specialties, free in the app

Where the money went General payments · program year 2025
  1. California $1,969 52% · 43 recipients
  2. Mississippi $375 10% · 21 recipients
  3. Ohio $279 7% · 9 recipients
  4. Massachusetts $246 6% · 9 recipients
  5. Pennsylvania $204 5% · 4 recipients

The top 5 of 16 states; each share is of general payments naming this product in 2025 where a state was reported.

The top 25 states, free in the app

Prescribed to Medicare patients

Part D · data year 2024

Part D claims

194,890

Prescriptions dispensed, refills included

Drug cost

$240,109,835

Paid at the pharmacy, in all

Prescribers

4,093

With 11 or more claims of it

Medicare Part D drugs matched to RYTARY, 2024
Part D drug Name match Relative to the largest Prescribers Claims Drug cost
Rytary Carbidopa/Levodopa Same name 4,093 194,890 $240,109,835

Matched to this product by name; CMS does not link its files to Open Payments, so a similar name can be a different strength, form or brand. Prescriber counts include only prescribers with 11 or more claims of the drug, because CMS publishes nothing below that. Part D covers drugs dispensed to Medicare beneficiaries at a pharmacy; it does not include drugs given in a clinic or hospital, or patients with other insurance.

Largest prescribers

First 5 of 100 by claims · 2024

Two separate records. Claims come from Medicare and related payments from Open Payments. They are shown in one row because they name the same product; they do not show that a payment affected a prescription.

The prescribers with the most Part D claims of this drug in 2024
Prescriber Specialty State Claims Drug cost Related payments
Angel Vinuela Neurology PR 2,810 $1,650,087 None on record
Nengchun Huang Neurology CA 1,439 $1,328,038 $122
Laura Surillo-Dahdah Neurology PR 1,228 $862,382 None on record
Daniel Truong Neurology CA 1,031 $836,009 $170
Cherian Karunapuzha Neurology OK 877 $1,239,936 $792

"No profile" means the prescriber has no Open Payments record here; "None on record" means no payment naming this product in the payment year. Related payments are general payments, and one that names several products is split evenly, so an amount is payments related to the product, not money paid for it. The list is the prescribers with the most claims, up to 100 per drug.

See more in the dashboard: 25 with a free account, all 100 with Patron
46,579 general

Every payment, record by record

Date, amount, who was paid and what for — filter by year and kind, or download as CSV, free, in files of 5,000 rows.

What you are looking at

Manufacturers name the drug, biological or device a payment relates to. CMS does not give products their own identifiers, so a product here is assembled from how it was reported — a brand may appear under more than one spelling, and this page covers one of them rather than the brand as a whole.

Provenance

Source: CMS Open Payments · through program year 2025

We reproduce what manufacturers reported. We do not verify, edit or correct the underlying records.

A payment record is not evidence of wrongdoing. Financial relationships between industry and medicine are legal, common and often necessary for research. Who Paid My Doc reports what was disclosed; it does not judge it.

Who Paid My Doc is independent and is not affiliated with, endorsed by or sponsored by CMS or any U.S. government agency. It is not a consumer reporting agency and this is not a consumer report; do not use it for decisions covered by the Fair Credit Reporting Act.

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