Dennis Yap, MD
Family Medicine · Springfield, ILNPI 1508967597
Payments from drug & device makers
Across 126 payments — averaging $15.34 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$316
- E.r. Squibb & Sons, L.L.C.$313
- Pfizer$217
- Novo Nordisk$159
- Lilly USA, LLC$137
- Novartis$112
- plus $678 from 14 others
What the payments were for
- Food & beverage$1,932100%
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 |
|---|---|---|
| AstraZeneca | 17 | $316 |
| E.r. Squibb & Sons, L.L.C. | 19 | $313 |
| Pfizer | 15 | $217 |
| Novo Nordisk | 9 | $159 |
| Lilly USA, LLC | 14 | $137 |
| Novartis | 5 | $112 |
| GSK | 6 | $100 |
| Abbott | 6 | $87 |
| Boehringer Ingelheim | 5 | $81 |
| Johnson & Johnson | 4 | $72 |
| Phathom Pharmaceuticals, Inc. | 4 | $60 |
| Takeda Pharmaceuticals U.S.A., Inc. | 3 | $57 |
| AbbVie(2 entities) | 3 | $49 |
| Sunovion Pharmaceuticals Inc. | 9 | $46 |
| Amgen | 2 | $37 |
| Mylan Specialty L.p. | 1 | $22 |
| Exact Sciences | 1 | $22 |
| Boston Scientific | 1 | $17 |
| Otsuka America Pharmaceutical, Inc. | 1 | $15 |
| Merck | 1 | $15 |
How this compares
$1,932 in reported general payments places this provider in the 80th 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 |
|---|---|---|
| JanuviaSitagliptin Phosphate | 67 | $98,256 |
| EliquisApixaban | 77 | $82,794 |
| OzempicSemaglutide | 49 | $44,766 |
| RybelsusSemaglutide | 17 | $25,932 |
| XareltoRivaroxaban | 21 | $21,194 |
| JardianceEmpagliflozin | 32 | $16,030 |
| Breo ElliptaFluticasone/Vilanterol | 33 | $13,345 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 17 | $12,541 |
| EntrestoSacubitril/Valsartan | 28 | $9,706 |
| Tresiba Flextouch U-200Insulin Degludec | 13 | $7,408 |
| Nano 2nd Gen Pen NeedlePen Needle, Diabetic | 72 | $5,725 |
| Tresiba Flextouch U-100Insulin Degludec | 13 | $5,031 |
| Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp | 29 | $4,431 |
| Novolin 70-30 FlexpenInsulin Nph Hum/Reg Insulin Hm | 35 | $2,395 |
| Tamsulosin Hcl | 188 | $2,324 |
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 |
|---|---|---|
| MerckJanuvia | $15 | $98,25667 claims |
| PfizerEliquis | $217 | $82,79477 claims |
| Novo NordiskOzempic, Rybelsus | $159 | $70,69866 claims |
| GSKBreo Ellipta, Anoro Ellipta | $100 | $25,88650 claims |
| Johnson & JohnsonXarelto | $72 | $21,19421 claims |
| Boehringer IngelheimJardiance | $81 | $16,03032 claims |
| NovartisEntresto | $112 | $9,70628 claims |
| Lilly USA, LLCOlanzapine | $137 | $1,00627 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 80th percentile of 4,116 family medicine providers in Illinois.
Other family medicine in Springfield
- Ali BajwaSpringfield$5.8M
- John WangSpringfield$114K
- Randy WesternSpringfield$28K
- Daniel BruneCreve Coeur$15M
- John ElsenEvergreen Park$5M
- Manohar JethaniBerwyn$4.9M
- Tiffany NguyenSkokie$3.9M
- Bradley TorphyChicago$3M
- Diana WidicusRochester$2.6M
- Nicholas WeberEureka$2.5M
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.