Who Paid My Doc
Metformin
Drug Oncology
General payments
$0
Research payments
$22
Through program year 2025, $0 in general payments and $22 in research payments were reported against Metformin (Oncology).
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
1 row| Year | Kind | Amount | Payments |
|---|---|---|---|
| 2025 | Research | $22 | 1 |
Prescribed to Medicare patients
Part D · data year 2024Part D claims
33,007,635
Drug cost
$333,255,899
| Part D drug | Name match | Relative to the largest | Prescribers | Claims | Drug cost |
|---|---|---|---|---|---|
| Metformin Hcl | Similar name | 248,402 | 23,274,114 | $183,281,522 | |
| Metformin Hcl Er Metformin Hcl | Similar name | 171,278 | 9,671,266 | $96,151,145 | |
| Metformin Er Gastric Metformin Hcl | Similar name | 1,429 | 45,367 | $50,923,864 | |
| Metformin Er Osmotic Metformin Hcl | Similar name | 860 | 16,888 | $2,899,369 |
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 380 by claims · 2024Two 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.
| Prescriber | Specialty | State | Claims | Drug cost | Related payments |
|---|---|---|---|---|---|
| Robert Pearlstein | Internal Medicine | PA | 7,469 | $69,277 | None on record |
| Stella Ilyayeva | Internal Medicine | NY | 4,544 | $512,664 | None on record |
| Dmitri Kirpichnikov | Endocrinology | NY | 3,818 | $253,010 | None on record |
| Najmuddin Karimjee | Internal Medicine | TX | 3,628 | $23,570 | None on record |
| Michael Satchell | Family Practice | GA | 3,450 | $17,638 | None on record |
"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 380 with PatronRecords
1 researchEvery 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.