Marco Corallo, DO
Endocrinology, Diabetes & Metabolism · Beloit, OHNPI 1568550549
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $151,747 of the $175,088 with a category attached, or 86.7%. 42 manufacturers reported payments, led by Novo Nordisk at 42.1% of the total. Reporting peaked in 2019 at $66,992 and has fallen 95.8% since, to $2,822 in 2025. Among endocrinology, diabetes & metabolism clinicians in OH 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 1,282 payments — averaging $136.57 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$74K
- Amgen$34K
- Amarin Pharma, Inc.$21K
- Boehringer Ingelheim$18K
- Lilly USA, LLC$11K
- Esperion Therapeutics, Inc.$6K
- plus $12K from 36 others
What the payments were for
- Consulting fees$4880%
- Speaking & faculty fees$151,74787%
- Travel & lodging$5,2113%
- Food & beverage$17,54810%
- Education$940%
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.
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
$175,088 in reported general payments places this provider in the 95th percentile of 312 endocrinology, diabetes & metabolism providers in Ohio.
See all endocrinology, diabetes & metabolism providers in Ohio →
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 | 70 | $101,099 |
| JardianceEmpagliflozin | 53 | $69,072 |
| TrulicityDulaglutide | 31 | $60,443 |
| Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog | 36 | $49,205 |
| VascepaIcosapent Ethyl | 53 | $34,097 |
| Tresiba Flextouch U-200Insulin Degludec | 30 | $33,074 |
| Humulin R U-500 KwikpenInsulin Regular, Human | 12 | $29,694 |
| FarxigaDapagliflozin Propanediol | 29 | $25,981 |
| Soliqua 100-33Insulin Glargine/Lixisenatide | 15 | $21,329 |
| Repatha SureclickEvolocumab | 15 | $20,387 |
| Tresiba Flextouch U-100Insulin Degludec | 14 | $17,546 |
| KerendiaFinerenone | 14 | $15,168 |
| TradjentaLinagliptin | 18 | $15,107 |
| JanuviaSitagliptin Phosphate | 15 | $12,719 |
| Omnipod Dash Pods (Gen 4)Insulin Pump Cart,cont Inf,bt | 17 | $11,584 |
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, Novolog | $73,761 | $110,56189 claims |
| Boehringer IngelheimJardiance, Tradjenta | $17,898 | $84,17971 claims |
| Lilly USA, LLCTrulicity, Humalog | $10,700 | $65,12246 claims |
| AstraZenecaFarxiga | $687 | $25,98129 claims |
| Sanofi-aventis U.S. LLCSoliqua 100-33 | $837 | $21,32915 claims |
| BayerKerendia | $1,202 | $15,16814 claims |
| MerckJanuvia | $2,352 | $12,71915 claims |
| AbbVieSynthroid | $611 | $6,83878 claims |
| Amneal Pharmaceuticals LLCLevothyroxine Sodium, Unithroid | $58 | $3,312229 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 312 endocrinology, diabetes & metabolism providers in Ohio.
Other endocrinology, diabetes & metabolism in Beloit
- Elena ChristofidesColumbus$2.3M
- Kevin PantaloneCleveland$1.2M
- John PaesWesterville$671K
- Samuel AndersonColumbus$556K
- Bhaskar GundaboluToledo$471K
- Nelson WattsCincinnati$346K
- Baker MachhadiehHamilton$304K
- Brian BurtchMentor$264K
- Allan KennedyCleveland$245K
- Shawn PeavieCincinnati$201K
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.