John Gilbert, MD
Endocrinology, Diabetes & Metabolism · Fullerton, CANPI 1588650667
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $369,027 of the $420,932 with a category attached, or 87.7%. 41 manufacturers reported payments, led by Novo Nordisk at 35.7% of the total. Among endocrinology, diabetes & metabolism clinicians in CA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 1,057 payments — averaging $398.23 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$150K
- Abbott$121K
- Lilly USA, LLC$83K
- AstraZeneca$31K
- Sanofi-aventis U.S. LLC$13K
- Amgen$11K
- plus $11K from 35 others
Across 507 payments — averaging $1412.70 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Novo Nordisk AS$615K
- AbbVie$101K
- Boehringer Ingelheim$150
What the payments were for
- Consulting fees$12,0503%
- Speaking & faculty fees$369,02788%
- Travel & lodging$19,0765%
- Food & beverage$20,4345%
- Education$2850%
- Gifts$590%
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 | 257 | $150,252 |
| Abbott | 167 | $121,410 |
| Lilly USA, LLC | 210 | $83,481 |
| AstraZeneca(2 entities) | 80 | $31,210 |
| Sanofi-aventis U.S. LLC | 30 | $12,604 |
| Amgen(2 entities) | 76 | $11,001 |
| AbbVie | 22 | $5,384 |
| Dexcom, Inc. | 42 | $1,409 |
| Medtronic(2 entities) | 11 | $672 |
| Boehringer Ingelheim | 23 | $561 |
| Corcept Therapeutics | 15 | $427 |
| Recordati_rare_diseases_inc. | 7 | $294 |
| Tandem Diabetes Care, Inc. | 6 | $213 |
| Mannkind Corporation | 8 | $193 |
| Radius Health, Inc. | 8 | $184 |
| Bayer | 10 | $182 |
| Johnson & Johnson | 26 | $165 |
| Xeris Pharmaceuticals, Inc. | 7 | $155 |
| Lifescan, Inc. | 7 | $139 |
| Novartis | 6 | $135 |
| Insulet Corporation | 7 | $134 |
| Kyowa Kirin, Inc. | 4 | $104 |
| IBSA Pharma Inc. | 4 | $78 |
| GRT US Holding, Inc. | 2 | $50 |
| Sequel Med Tech, LLC | 2 | $42 |
| Ultragenyx Pharmaceutical Inc. | 2 | $42 |
| Amarin Pharma, Inc. | 2 | $40 |
| BD | 1 | $40 |
| Embecta Corp. | 1 | $38 |
| Cequr Corporation | 2 | $34 |
| Merck | 2 | $32 |
| Averitas Pharma Inc. | 1 | $27 |
| Ascensia Diabetes Care US Inc. | 1 | $25 |
| Verity Pharmaceuticals Inc. | 1 | $24 |
| Shield Therapeutics Inc | 1 | $24 |
| Regeneron Healthcare Solutions, Inc. | 1 | $24 |
| Madrigal Pharmaceuticals | 1 | $24 |
| Amryt Pharma Holdings Ltd | 1 | $22 |
| Bigfoot Biomedical Inc | 1 | $21 |
| Aytu Biopharma, Inc. | 1 | $18 |
| Pfizer | 1 | $18 |
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.
- FREESTYLE LIBRE 3$90,702
- Ozempic$72,753
- RYBELSUS$60,609
- LYUMJEV$37,892
- FARXIGA$29,917
- FreeStyle Libre Pro$14,981
- Repatha$9,749
- SOLIQUA 100/33$8,589
- FreeStyle Libre$7,666
- Tresiba$6,746
- FreeStyle Libre 2$6,136
- Synthroid$4,946
- TOUJEO$3,632
- DEXCOM G6 TRANSMITTER$579
- Minimed 670G System$290
- MINIMED 780G$249
- Victoza$185
- Xultophy 100/3.6$185
- HUMULIN$159
- ISTURISA$132
How this compares
$420,932 in reported general payments places this provider in the 95th percentile of 952 endocrinology, diabetes & metabolism providers in California.
See all endocrinology, diabetes & metabolism providers in California →
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 | 562 | $873,255 |
| FarxigaDapagliflozin Propanediol | 490 | $520,047 |
| JardianceEmpagliflozin | 333 | $431,791 |
| TrulicityDulaglutide | 130 | $215,824 |
| JanuviaSitagliptin Phosphate | 170 | $192,277 |
| MounjaroTirzepatide | 120 | $156,457 |
| RybelsusSemaglutide | 103 | $152,702 |
| JanumetSitagliptin Phos/Metformin Hcl | 68 | $65,011 |
| Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog | 51 | $59,524 |
| InvokanaCanagliflozin | 41 | $51,775 |
| Humalog Kwikpen U-100Insulin Lispro | 118 | $46,234 |
| Lyumjev Kwikpen U-100Insulin Lispro-Aabc | 38 | $43,646 |
| SynthroidLevothyroxine Sodium | 391 | $39,305 |
| Bydureon BciseExenatide Microspheres | 17 | $38,507 |
| Tresiba Flextouch U-100Insulin Degludec | 51 | $33,075 |
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 | $150,252 | $1,025,958665 claims |
| AstraZenecaFarxiga | $31,210 | $520,047490 claims |
| Boehringer IngelheimJardiance, Tradjenta | $561 | $460,406358 claims |
| Lilly USA, LLCTrulicity, Mounjaro, Humalog | $83,481 | $380,465290 claims |
| MerckJanuvia, Janumet, Janumet Xr | $32 | $273,474252 claims |
| Johnson & JohnsonInvokana | $165 | $51,77541 claims |
| AbbVieSynthroid | $5,384 | $39,305391 claims |
| Sanofi-aventis U.S. LLCSoliqua 100-33, Lantus | $12,604 | $34,88859 claims |
| BayerKerendia | $182 | $18,67618 claims |
| PfizerEliquis | $18 | $17,26819 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 95th percentile of 952 endocrinology, diabetes & metabolism providers in California.
Other endocrinology, diabetes & metabolism in Fullerton
- Juan FriasSan Diego$1.4M
- Joselito CabaccanSan Jose$1.4M
- Daniel NadeauNewport Beach$1.2M
- Yehuda HandelsmanTarzana$1M
- Helen BaronRancho Mirage$958K
- Ken FujiokaSan Diego$747K
- Minou TranPico Rivera$663K
- James ChuMonterey$639K
- Anthony HeaneyLos Angeles$588K
- Daniel Einhornla Jolla$578K
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.