Jonathan Leffert, MD
Endocrinology, Diabetes & Metabolism · Dallas, TXNPI 1891720785
Payments from drug & device makers
Across 192 payments — averaging $22.48 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$341
- Tandem Diabetes Care, Inc.$340
- Amgen$327
- Lilly USA, LLC$304
- Chiesi USA, Inc.$300
- Sanofi-aventis U.S. LLC$263
- plus $2K from 33 others
What the payments were for
- Speaking & faculty fees$3007%
- Food & beverage$3,96492%
- Education$521%
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 |
|---|---|---|
| Novo Nordisk | 17 | $341 |
| Tandem Diabetes Care, Inc. | 13 | $340 |
| Amgen | 19 | $327 |
| Lilly USA, LLC | 16 | $304 |
| Chiesi USA, Inc. | 1 | $300 |
| Sanofi-aventis U.S. LLC | 8 | $263 |
| Mannkind Corporation | 11 | $219 |
| Abbott | 11 | $216 |
| Medtronic(2 entities) | 10 | $181 |
| Cequr Corporation | 4 | $174 |
| Dexcom, Inc. | 7 | $160 |
| Insulet Corporation | 8 | $154 |
| Radius Health, Inc. | 6 | $137 |
| Xeris Pharmaceuticals, Inc. | 6 | $134 |
| Boehringer Ingelheim | 5 | $98 |
| Corcept Therapeutics | 4 | $88 |
| IBSA Pharma Inc. | 5 | $84 |
| Amneal Pharmaceuticals LLC | 4 | $75 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 3 | $57 |
| Shire North American Group Inc | 2 | $57 |
| AbbVie | 3 | $55 |
| Amryt Pharma Holdings Ltd | 3 | $54 |
| Johnson & Johnson | 3 | $52 |
| Valeritas, Inc. | 2 | $43 |
| Alvogen Inc | 2 | $42 |
| AstraZeneca | 2 | $42 |
| Companion Medical, Inc. | 2 | $39 |
| Ultragenyx Pharmaceutical Inc. | 2 | $37 |
| Madrigal Pharmaceuticals | 1 | $34 |
| Ascendis Pharma Endocrinology Inc | 1 | $29 |
| BETA Bionics, Inc. | 2 | $28 |
| Merck | 2 | $25 |
| Neurocrine Biosciences, Inc. | 1 | $24 |
| Amarin Pharma, Inc. | 1 | $20 |
| Kyowa Kirin, Inc. | 1 | $20 |
| Gilead | 1 | $19 |
| Avvisto Therapeutics, LLC | 1 | $17 |
| Nevro Corp. | 1 | $15 |
| Regeneron Healthcare Solutions, Inc. | 1 | $12 |
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.
- MYCAPSSA$300
How this compares
$4,317 in reported general payments places this provider in the 50th percentile of 658 endocrinology, diabetes & metabolism providers in Texas.
See all endocrinology, diabetes & metabolism providers in Texas →
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 | 207 | $310,415 |
| JardianceEmpagliflozin | 109 | $150,123 |
| TymlosAbaloparatide | 35 | $114,377 |
| MounjaroTirzepatide | 78 | $89,507 |
| TrulicityDulaglutide | 29 | $42,136 |
| Tresiba Flextouch U-100Insulin Degludec | 64 | $32,255 |
| SynthroidLevothyroxine Sodium | 322 | $32,206 |
| Fiasp FlextouchInsulin Aspart (Niacinamide) | 35 | $29,320 |
| RybelsusSemaglutide | 22 | $26,694 |
| JanuviaSitagliptin Phosphate | 26 | $25,227 |
| FarxigaDapagliflozin Propanediol | 14 | $23,880 |
| ProliaDenosumab | 13 | $22,368 |
| Novolog FlexpenInsulin Aspart | 41 | $13,678 |
| Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp | 25 | $13,043 |
| Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog | 12 | $11,358 |
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 |
|---|---|---|
| Novo NordiskOzempic, Rybelsus | $341 | $337,109229 claims |
| Boehringer IngelheimJardiance | $98 | $150,123109 claims |
| Lilly USA, LLCMounjaro, Trulicity, Humulin 70-30 | $304 | $133,980131 claims |
| Radius Health, Inc.Tymlos | $137 | $114,37735 claims |
| AbbVieSynthroid | $55 | $32,206322 claims |
| MerckJanuvia | $25 | $25,22726 claims |
| AstraZenecaFarxiga | $42 | $23,88014 claims |
| AmgenProlia | $327 | $22,36813 claims |
| Amneal Pharmaceuticals LLCLevothyroxine Sodium | $75 | $4,605397 claims |
| Sanofi-aventis U.S. LLCLantus | $263 | $2,13612 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 50th percentile of 658 endocrinology, diabetes & metabolism providers in Texas.
Other endocrinology, diabetes & metabolism in Dallas
- Julio RosenstockDallas$24.9M
- Ildiko LingvayDallas$8.2M
- Peter BresslerDallas$4.2M
- Steve FordanDallas$2.8M
- Pablo MoraDallas$2.1M
- Saleemah FahmiDallas$1.2M
- Priscilla HollanderDallas$1M
- Oksana HamidiDallas$1M
- Amy ShahDallas$953K
- Abhimanyu GargDallas$920K
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.