Neal Kellenberger, MD
Family Medicine · Belvidere, ILNPI 1427210319
Payments from drug & device makers
Across 67 payments — averaging $13.50 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pfizer$170
- Novo Nordisk$167
- Boehringer Ingelheim$117
- GSK$88
- Amarin Pharma, Inc.$69
- AstraZeneca$42
- plus $251 from 12 others
What the payments were for
- Food & beverage$905100%
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 |
|---|---|---|
| Pfizer | 15 | $170 |
| Novo Nordisk | 12 | $167 |
| Boehringer Ingelheim | 9 | $117 |
| GSK | 6 | $88 |
| Amarin Pharma, Inc. | 3 | $69 |
| AstraZeneca | 3 | $42 |
| Johnson & Johnson | 3 | $39 |
| Mylan Specialty L.p. | 2 | $37 |
| Lilly USA, LLC | 3 | $37 |
| Mannkind Corporation | 2 | $28 |
| Sunovion Pharmaceuticals Inc. | 2 | $18 |
| Novartis | 1 | $15 |
| Kowa Pharmaceuticals America, Inc. | 1 | $15 |
| Amgen | 1 | $13 |
| Merck | 1 | $13 |
| Shire North American Group Inc | 1 | $13 |
| AbbVie | 1 | $12 |
| Genentech USA, Inc. | 1 | $12 |
How this compares
$905 in reported general payments places this provider in the 70th percentile of 4,116 family medicine providers in Illinois.
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 |
|---|---|---|
| JardianceEmpagliflozin | 112 | $152,583 |
| OzempicSemaglutide | 54 | $94,954 |
| EliquisApixaban | 79 | $81,038 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 66 | $57,659 |
| TrulicityDulaglutide | 35 | $52,708 |
| MounjaroTirzepatide | 40 | $51,751 |
| RybelsusSemaglutide | 31 | $49,013 |
| XareltoRivaroxaban | 30 | $43,106 |
| XifaxanRifaximin | 13 | $28,939 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 41 | $20,290 |
| MyrbetriqMirabegron | 14 | $18,770 |
| InvokanaCanagliflozin | 15 | $12,756 |
| JanuviaSitagliptin Phosphate | 14 | $10,152 |
| Novolog FlexpenInsulin Aspart | 19 | $8,813 |
| Lantus SolostarInsulin Glargine,hum.Rec.Anlog | 51 | $8,565 |
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 |
|---|---|---|
| Boehringer IngelheimJardiance | $117 | $152,583112 claims |
| Novo NordiskOzempic, Rybelsus | $167 | $143,96885 claims |
| Lilly USA, LLCTrulicity, Mounjaro | $37 | $104,45975 claims |
| GSKTrelegy Ellipta, Anoro Ellipta, Incruse Ellipta, Breo Ellipta | $88 | $88,082137 claims |
| PfizerEliquis | $170 | $81,03879 claims |
| Johnson & JohnsonXarelto, Invokana | $39 | $55,86245 claims |
| MerckJanuvia | $13 | $10,15214 claims |
| AbbVieSynthroid | $12 | $3,11645 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 70th percentile of 4,116 family medicine providers in Illinois.
Other family medicine in Belvidere
- James PhoenixBelvidere$130K
- Daniel BruneCreve Coeur$15M
- Ali BajwaSpringfield$5.8M
- John ElsenEvergreen Park$5M
- Manohar JethaniBerwyn$4.9M
- Tiffany NguyenSkokie$3.9M
- Bradley TorphyChicago$3M
- Diana WidicusRochester$2.6M
- Nicholas WeberEureka$2.5M
- Stanley KochMorton$2.3M
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.