Randall Fenner, MD
Endocrinology, Diabetes & Metabolism · Sioux Falls, SDNPI 1073780375
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.1% of the total across 96 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 21 manufacturers, the largest accounting for just 19.2% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2019 at $494 and has fallen 75.8% since, to $120 in 2025.
Across 96 payments — averaging $16.13 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$298
- Dexcom, Inc.$230
- Medtronic$187
- Novo Nordisk$159
- Insulet Corporation$97
- Boehringer Ingelheim$79
- plus $498 from 15 others
What the payments were for
- Food & beverage$1,53599%
- Education$141%
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(2 entities) | 16 | $298 |
| Dexcom, Inc. | 17 | $230 |
| Medtronic(2 entities) | 13 | $187 |
| Novo Nordisk | 10 | $159 |
| Insulet Corporation | 6 | $97 |
| Boehringer Ingelheim | 5 | $79 |
| AstraZeneca | 5 | $69 |
| Abbott | 4 | $68 |
| Regeneron Healthcare Solutions, Inc. | 2 | $60 |
| Sanofi-aventis U.S. LLC | 3 | $50 |
| Kyowa Kirin, Inc. | 2 | $43 |
| Johnson & Johnson | 3 | $38 |
| Chiesi USA, Inc. | 1 | $26 |
| Radius Health, Inc. | 2 | $25 |
| Antares Pharma, Inc. | 1 | $25 |
| Ipsen Biopharmaceuticals, Inc | 1 | $21 |
| IBSA Pharma Inc. | 1 | $16 |
| Sequel Med Tech, LLC | 1 | $16 |
| Pfizer | 1 | $14 |
| Recordati_rare_diseases_inc. | 1 | $13 |
| EUSA Pharma (US) LLC | 1 | $13 |
How this compares
$1,549 in reported general payments places this provider in the 75th 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 | 95 | $126,233 |
| MounjaroTirzepatide | 86 | $89,062 |
| Tresiba Flextouch U-200Insulin Degludec | 43 | $53,845 |
| JardianceEmpagliflozin | 39 | $53,135 |
| TrulicityDulaglutide | 29 | $37,119 |
| FarxigaDapagliflozin Propanediol | 47 | $36,389 |
| Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog | 33 | $20,986 |
| Novolog FlexpenInsulin Aspart | 82 | $17,976 |
| Fiasp FlextouchInsulin Aspart (Niacinamide) | 11 | $13,870 |
| Testosterone | 48 | $13,518 |
| SynthroidLevothyroxine Sodium | 93 | $10,032 |
| Lantus SolostarInsulin Glargine,hum.Rec.Anlog | 70 | $8,240 |
| Tresiba Flextouch U-100Insulin Degludec | 14 | $8,049 |
| Humalog Kwikpen U-100Insulin Lispro | 21 | $6,734 |
| Toujeo SolostarInsulin Glargine,hum.Rec.Anlog | 16 | $6,063 |
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 | $159 | $131,184115 claims |
| Boehringer IngelheimJardiance | $79 | $53,13539 claims |
| AstraZenecaFarxiga | $69 | $36,38947 claims |
| Sanofi-aventis U.S. LLCLantus | $50 | $2,47311 claims |
| PfizerLevoxyl | $14 | $2,26341 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 75th 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
- 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
- Racquel Anel-TiangcoSioux Falls$506
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.