Fan Zhang
Endocrinology, Diabetes & Metabolism · Brooklyn, NYNPI 1205210176
Payments from drug & device makers
Across 81 payments — averaging $50.70 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amneal Pharmaceuticals LLC$1K
- Bayer$643
- Amgen$551
- Mannkind Corporation$389
- Cequr Corporation$228
- Lilly USA, LLC$190
- plus $744 from 17 others
What the payments were for
- Food & beverage$2,75867%
- Education$1,28931%
- Gifts$591%
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 |
|---|---|---|
| Amneal Pharmaceuticals LLC | 7 | $1,362 |
| Bayer | 21 | $643 |
| Amgen(2 entities) | 10 | $551 |
| Mannkind Corporation | 7 | $389 |
| Cequr Corporation | 3 | $228 |
| Lilly USA, LLC | 4 | $190 |
| Xeris Pharmaceuticals, Inc. | 6 | $125 |
| Radius Health, Inc. | 2 | $100 |
| Sanofi-aventis U.S. LLC | 4 | $94 |
| AstraZeneca | 1 | $84 |
| Medtronic | 2 | $53 |
| Abbott | 2 | $47 |
| Ascendis Pharma Endocrinology Inc | 2 | $46 |
| Madrigal Pharmaceuticals | 1 | $26 |
| Astellas Pharma US Inc | 1 | $23 |
| Insulet Corporation | 1 | $22 |
| GSK | 1 | $21 |
| Intra-sana Laboratories | 1 | $21 |
| Dexcom, Inc. | 1 | $20 |
| Amarin Pharma, Inc. | 1 | $19 |
| Mentor Worldwide LLC | 1 | $17 |
| Corcept Therapeutics | 1 | $13 |
| Tandem Diabetes Care, Inc. | 1 | $13 |
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
$4,107 in reported general payments places this provider in the 65th percentile of 804 endocrinology, diabetes & metabolism providers in New York.
See all endocrinology, diabetes & metabolism providers in New York →
Medicare billing
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 |
|---|---|---|
| OzempicSemaglutide | 160 | $203,710 |
| JanuviaSitagliptin Phosphate | 88 | $87,594 |
| FarxigaDapagliflozin Propanediol | 87 | $67,599 |
| JardianceEmpagliflozin | 60 | $61,495 |
| Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog | 59 | $45,553 |
| Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/7 | 38 | $36,914 |
| TrulicityDulaglutide | 26 | $36,265 |
| KerendiaFinerenone | 40 | $27,446 |
| TradjentaLinagliptin | 30 | $23,151 |
| Novolog FlexpenInsulin Aspart | 151 | $22,680 |
| Gvoke Hypopen 2-PackGlucagon | 37 | $22,620 |
| Fiasp FlextouchInsulin Aspart (Niacinamide) | 26 | $22,045 |
| Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog | 59 | $15,189 |
| MounjaroTirzepatide | 14 | $13,796 |
| JanumetSitagliptin Phos/Metformin Hcl | 19 | $13,167 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AstraZenecaFarxiga | $84 | $67,59987 claims |
| Lilly USA, LLCTrulicity, Mounjaro, Humalog | $190 | $52,39653 claims |
| BayerKerendia | $643 | $27,44640 claims |
| Cequr CorporationCequr Simplicity | $228 | $10,97226 claims |
| Amneal Pharmaceuticals LLCLevothyroxine Sodium | $1,362 | $1,471100 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 65th percentile of 804 endocrinology, diabetes & metabolism providers in New York.
Other endocrinology, diabetes & metabolism in Brooklyn
- Robert SilverBrooklyn$1.3M
- Alexander PerkelvaldBrooklyn$323K
- John LeffBrooklyn$248K
- Matvey BrokhinBrooklyn$243K
- Matin SharafatkhahBrooklyn$235K
- Robert BuschAlbany$9.1M
- Anastasios ManessisNew York$4.4M
- Ruth WeinstockSyracuse$3.1M
- Adi CohenNew York$2.5M
- Ajay ChaudhuriBuffalo$2.4M
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.