Internal Medicine, Hematology & Oncology · Springfield, IL
NPI
1710905906
Since 2006
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
2
Medicare group memberships
Hospitals
3
Hospital affiliations
900 N. 1st Street
Springfield, IL, 62702
Phone (217) 528-7541
Groups this clinician bills Medicare through
Medicare paid, 2024
$2.4M
162,779 services
Medicare patients, 2024
643
Average age 75
Drug cost, 2024
$6.4M
2,036 prescriptions
Company payments, 2025
$147
From 6 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Timothy L Gillison was code J1756 (injection, iron sucrose, 1 mg), 37,800 times for 85 patients. In total Timothy L Gillison billed 162,779 services in 127 codes, and Medicare paid $2.4M.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2020-05-22.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J1756 Injection, iron sucrose, 1 mg | Office | 37,800 | 85 | $0.15 | $5,857 |
| J9271 Injection, pembrolizumab, 1 mg | Office | 25,600 | 18 | $44.58 | $1.1M |
| J1439 Injection, ferric carboxymaltose, 1 mg | Office | 21,000 | 14 | $0.86 | $18K |
| J0897 Injection, denosumab, 1 mg | Office | 4,200 | 20 | $20.38 | $86K |
| J1100 Injection, dexamethasone sodium phosphate, 1 mg | Office | 1,616 | 37 | $0.09 | $147 |
| 85025 Blood Count | Office | 868 | 343 | $7.61 | $6,605 |
| J7050 Infusion, normal saline solution, 250 cc | Office | 819 | 144 | $0.50 | $407 |
| 36415 Venipuncture Blood Collection | Office | 769 | 367 | $7.80 | $6,001 |
| 99214 Office E&M - Established | Office | 700 | 254 | $93.41 | $65K |
| J2469 Injection, palonosetron hcl, 25 mcg | Office | 620 | 23 | $0.72 | $446 |
| 99213 Office E&M - Established | Office | 390 | 309 | $61.27 | $24K |
| 96413 Chemotherapy Administration | Office | 330 | 59 | $92.89 | $31K |
| 80047 Clinical Chemistry | Office | 328 | 90 | $13.46 | $4,415 |
| 96375 Injection Administration | Office | 261 | 44 | $11.49 | $2,998 |
| 96365 Intravenous Infusion, Hydration | Office | 231 | 106 | $39.64 | $9,156 |
By year: 2022 $2.5M for 195,292 services; 2023 $2.8M for 231,073 services; 2024 $2.4M for 162,779 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 85025 Blood Count | 868 | 343 | $7.61 | $6,605 |
| 36415 Venipuncture Blood Collection | 769 | 367 | $7.80 | $6,001 |
| 80047 Clinical Chemistry | 328 | 90 | $13.46 | $4,415 |
Medicare prescription drug claims, 2024
In 2024, the drug Timothy L Gillison prescribed most often to Medicare patients was Anastrozole, with 236 prescriptions and refills. In total Timothy L Gillison wrote 2,036 Medicare prescriptions that cost $6.4M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Anastrozole Generic | 236 | 480 | 60 | $3,251 |
| Potassium Chloride Generic | 103 | 187 | 34 | $1,405 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 88 | 88 | 38 | $2,012 |
| Hydroxyurea Generic | 71 | 158 | 17 | $2,412 |
| Imbruvica Ibrutinib | 71 | 87 | Under 11 | $1.3M |
| Ondansetron Hcl Generic | 70 | 72 | 31 | $732 |
| Prednisone Generic | 69 | 77 | 18 | $355 |
| Letrozole Generic | 69 | 153 | 22 | $816 |
| Eliquis Apixaban | 66 | 84 | 13 | $48K |
| Gabapentin Generic | 55 | 79 | 15 | $1,435 |
| Prochlorperazine Maleate Generic | 49 | 49 | 20 | $764 |
| Acyclovir Generic | 49 | 87 | Under 11 | $792 |
| Alprazolam Generic | 40 | 43 | Under 11 | $254 |
| Revlimid Lenalidomide | 40 | 40 | Under 11 | $850K |
| Dexamethasone Generic | 35 | 35 | 15 | $414 |
Brand drugs: - claims; generic drugs: 1,609 claims; opioid claims: 152.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Timothy L Gillison $147 ($147 in general payments such as food, travel and fees) from 6 companies. The largest payer was Pfizer Inc. with $46.09.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.