Illinois Medicare prescriber rankings
53,816 Illinois prescribers billed $9.6 billion in Medicare Part D drugs in 2024, the 9th largest of 56 states and territories. Opioids were 3.14 of every 100 of those claims (CMS), below the national 3.52.
- Prescribers53,816
- Part D drug cost$9.6 billion
- Average per prescriber$179,186
- Wrote an opioid (CMS)31,140 (57.88%)
- Opioid claims per 100 claims (CMS)3.14
Reading the Illinois tables
Illinois's 53,816 prescribers wrote 59,907,161 Part D claims in 2024, about $179,186 in drug cost per prescriber. A high total usually reflects specialty practice, such as cancer, rheumatology or HIV care, or vaccines: 4 of the 50 largest totals are mostly vaccines, which pharmacies often bill under a standing order naming one clinician. These are billing tables, not quality ratings. PlainDoctor does not rank named prescribers by opioid share; the state's opioid figures above come from CMS's own totals.
The 50 highest Part D drug-cost totals
| Prescriber (NPPES taxonomy) | Drug cost | Claims |
|---|---|---|
| 1Cedric DavisFamily Medicine Physicianmostly vaccines, often billed by pharmacies under a standing order naming this clinician | $90.8 million | 484,518 |
| 2Rushdi AlulInternal Medicine Physicianmostly vaccines, often billed by pharmacies under a standing order naming this clinician | $51.6 million | 244,919 |
| 3Weslin ThomasFamily Medicine Physicianmostly vaccines, often billed by pharmacies under a standing order naming this clinician | $21.4 million | 114,166 |
| 4Parameswaren VenugopalHematology (Internal Medicine) Physician | $20.8 million | 1,783 |
| 5Aaron BergerUrology Physician | $20.0 million | 5,349 |
| 6Jayesh MehtaHematology (Internal Medicine) Physician | $17.5 million | 6,902 |
| 7Michael CutticaCritical Care Medicine (Internal Medicine) Physician | $16.5 million | 2,228 |
| 8Krishdeep KhoslaInternal Medicine Physicianmostly vaccines, often billed by pharmacies under a standing order naming this clinician | $15.9 million | 90,559 |
| 9Nitasha SarswatCardiovascular Disease Physician | $11.9 million | 2,422 |
| 10Michael AhearnFamily Medicine Physician | $11.6 million | 140,400 |
| 11Patrick HagenHematology & Oncology Physician | $11.6 million | 1,059 |
| 12Lynne KaminerHematology (Internal Medicine) Physician | $10.8 million | 2,242 |
| 13Mohammad AlsharabatiNeuromuscular Medicine (Psychiatry & Neurology) Physician | $10.1 million | 4,944 |
| 14Chetan BhardwajAdvanced Heart Failure and Transplant Cardiology Physician | $9.9 million | 7,732 |
| 15Ike OkwuosaAdvanced Heart Failure and Transplant Cardiology Physician | $9.6 million | 2,348 |
| 16Ali ValikaAdvanced Heart Failure and Transplant Cardiology Physician | $9.5 million | 6,334 |
| 17Jennifer GreenfieldAdult Health Nurse Practitioner | $9.5 million | 926 |
| 18Benjamin DermanHematology & Oncology Physician | $9.1 million | 977 |
| 19John ViscontiMedical Oncology Physician | $9.1 million | 5,918 |
| 20James GagermeierPulmonary Disease Physician | $9.1 million | 3,360 |
| 21Alla GimelfarbHematology (Internal Medicine) Physician | $9.0 million | 1,717 |
| 22Gregory GerstnerHematology & Oncology Physician | $8.6 million | 3,541 |
| 23Philip DyMedical Oncology Physician | $8.6 million | 3,993 |
| 24Sana QuddusPulmonary Disease Physician | $8.6 million | 3,819 |
| 25Daniel FrankHematology & Oncology Physician | $8.5 million | 2,978 |
| 26Manuel RosadoHematology & Oncology Physician | $8.3 million | 1,847 |
| 27David GrinblattHematology (Internal Medicine) Physician | $8.2 million | 1,922 |
| 28Robert GordonAdvanced Heart Failure and Transplant Cardiology Physician | $7.9 million | 9,363 |
| 29Muhyaldeen DiaAdvanced Heart Failure and Transplant Cardiology Physician | $7.8 million | 1,832 |
| 30Mona VashiPulmonary Disease Physician | $7.7 million | 1,454 |
| 31Melissa LarsonHematology (Internal Medicine) Physician | $7.6 million | 1,192 |
| 32Seema SinghalHematology (Internal Medicine) Physician | $7.5 million | 1,040 |
| 33Ruben MylvaganamPulmonary Disease Physician | $7.4 million | 892 |
| 34Matthew McCoydNeurology Physician | $7.3 million | 2,788 |
| 35Pankaj KumarHematology & Oncology Physician | $7.3 million | 2,722 |
| 36Senda Ajroud-DrissNeuromuscular Medicine (Psychiatry & Neurology) Physician | $7.2 million | 967 |
| 37Kourosh RezaniaNeurology Physician | $7.2 million | 1,886 |
| 38Shriram LokareRheumatology Physician | $7.1 million | 10,102 |
| 39Matthew AdessMedical Oncology Physician | $7.1 million | 2,535 |
| 40Michael VeederHematology & Oncology Physician | $7.0 million | 3,601 |
| 41Frederick PfalzgrafRheumatology Physician | $7.0 million | 3,446 |
| 42Jijun LiuHematology & Oncology Physician | $7.0 million | 3,578 |
| 43Namita VinayekHematology & Oncology Physician | $6.8 million | 2,811 |
| 44Reuben ValenzuelaNeurology Physician | $6.8 million | 2,307 |
| 45Stephanie TsaiHematology (Internal Medicine) Physician | $6.7 million | 893 |
| 46Kathleen KambaFamily Nurse Practitioner | $6.7 million | 2,661 |
| 47Paul FishkinHematology & Oncology Physician | $6.6 million | 2,988 |
| 48Dennis OzmentRheumatology Physician | $6.6 million | 13,058 |
| 49Merat Karbasian-EsfahaniHematology & Oncology Physician | $6.6 million | 3,175 |
| 50Michael PorubcinHematology & Oncology Physician | $6.5 million | 3,387 |
Source: CMS Medicare Part D Prescribers by Provider, 2024 (data.cms.gov), matched to CMS NPPES by NPI; vaccine share from the prescriber's top drugs in the CMS by-provider-and-drug file. Specialty is the taxonomy the clinician reported to NPPES.
Common questions
How many Medicare prescribers are in Illinois?
Illinois has 53,816 Medicare Part D prescribers who filed 59,907,161 claims totaling $9.6 billion in drug costs.
What is the opioid prescribing rate in Illinois?
Opioids were 3.14 of every 100 Medicare Part D claims written by Illinois prescribers in 2024, against 3.52 nationally (CMS). 31,140 of the state's 53,804 Part D prescribers in CMS's geography file (57.88%) wrote at least one opioid.
Checking a prescriber
Open the prescriber's record for the full NPI entry and prescribing detail, then confirm the license on the state board search. The Part D file covers Medicare Part D only; commercial, Medicaid, VA and cash prescriptions are not in it.
Prescriber rankings in other states
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Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Medicare Part D data year 2024 (CMS).