Charles Longo, MD
Endocrinology, Diabetes & Metabolism · Sioux Falls, SDNPI 1841266608
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $401 of the $451 with a category attached, or 88.9%. It is spread thinly across 9 manufacturers, the largest accounting for just 23.9% — the pattern of someone who eats at a lot of different presentations. That places this record below the midpoint for endocrinology, diabetes & metabolism clinicians in SD, where the typical reported total is $921.
Across 20 payments — averaging $22.57 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$108
- Tepha Inc$79
- Chiesi USA, Inc.$54
- Pfizer$54
- Abbott$50
- Medtronic$45
- plus $61 from 3 others
What the payments were for
- Food & beverage$40189%
- Education$5011%
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 |
|---|---|---|
| Amgen | 6 | $108 |
| Tepha Inc | 2 | $79 |
| Chiesi USA, Inc. | 2 | $54 |
| Pfizer | 3 | $54 |
| Abbott | 1 | $50 |
| Medtronic | 3 | $45 |
| Dexcom, Inc. | 1 | $23 |
| Novartis | 1 | $22 |
| Sanofi-aventis U.S. LLC | 1 | $16 |
How this compares
$451 in reported general payments places this provider in the 30th percentile of 20 endocrinology, diabetes & metabolism providers in South Dakota.
See all endocrinology, diabetes & metabolism providers in South Dakota →
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 | 270 | $263,588 |
| MounjaroTirzepatide | 61 | $69,510 |
| Somatuline DepotLanreotide Acetate | 11 | $67,311 |
| TrulicityDulaglutide | 65 | $64,093 |
| ForteoTeriparatide | 12 | $48,390 |
| JardianceEmpagliflozin | 77 | $45,806 |
| Fiasp FlextouchInsulin Aspart (Niacinamide) | 54 | $42,169 |
| Tresiba Flextouch U-100Insulin Degludec | 66 | $39,125 |
| Tresiba Flextouch U-200Insulin Degludec | 50 | $35,971 |
| Novolog FlexpenInsulin Aspart | 111 | $29,035 |
| JanumetSitagliptin Phos/Metformin Hcl | 34 | $25,204 |
| JanuviaSitagliptin Phosphate | 35 | $20,003 |
| FiaspInsulin Aspart (Niacinamide) | 18 | $17,877 |
| Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/7 | 18 | $16,938 |
| NovologInsulin Aspart | 88 | $14,722 |
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 |
|---|---|---|
| Sanofi-aventis U.S. LLCLantus | $16 | $3,72333 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 30th percentile of 20 endocrinology, diabetes & metabolism providers in South Dakota.
Other endocrinology, diabetes & metabolism in Sioux Falls
- Richard CrawfordSioux Falls$126K
- Brandon AllardSioux Falls$3K
- Randall FennerSioux Falls$2K
- Marie Angelica DiazSioux Falls$2K
- Hassan MehmoodSioux Falls$1K
- Lorayne ChuaSioux Falls$1K
- Marcio GriebelerSioux Falls$1K
- Anthony SallarSioux Falls$921
- Nour Aljariri AlhesanSioux Falls$558
- Natalie KappusSioux Falls$526
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.