Internal Medicine, Hematology & Oncology · Williamsville, NY
NPI
1043260664
Since 2006
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
3
Medicare group memberships
Hospitals
5
Hospital affiliations
295 Essjay Rd
Williamsville, NY, 14221
Phone (716) 630-1059
Groups this clinician bills Medicare through
Medicare paid, 2024
$1.8M
132,609 services
Medicare patients, 2024
426
Average age 76
Drug cost, 2024
$4.2M
1,477 prescriptions
Company payments, 2025
$15.99
From 1 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Robert M Zielinski was code J1439 (injection, ferric carboxymaltose, 1 mg), 54,000 times for 34 patients. In total Robert M Zielinski billed 132,609 services in 122 codes, and Medicare paid $1.8M.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-12-20.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J1439 Injection, ferric carboxymaltose, 1 mg | Office | 54,000 | 34 | $0.86 | $47K |
| J0897 Injection, denosumab, 1 mg | Office | 5,160 | 42 | $20.26 | $105K |
| J1100 Injection, dexamethasone sodium phosphate, 1 mg | Office | 894 | 25 | $0.08 | $75.27 |
| J7050 Infusion, normal saline solution, 250 cc | Office | 673 | 85 | $0.51 | $343 |
| G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | Office | 343 | 212 | $11.94 | $4,095 |
| 99213 Office E&M - Established | Office | 326 | 210 | $60.32 | $20K |
| J2405 Injection, ondansetron hydrochloride, per 1 mg | Office | 324 | 13 | $0.07 | $21.29 |
| 85025 Blood Count | Office | 299 | 70 | $7.61 | $2,275 |
| 36415 Venipuncture Blood Collection | Office | 247 | 90 | $7.10 | $1,754 |
| J7060 5% dextrose/water (500 ml = 1 unit) | Office | 226 | 33 | $1.33 | $300 |
| 96365 Intravenous Infusion, Hydration | Office | 205 | 67 | $46.58 | $9,548 |
| 99214 Office E&M - Established | Office | 180 | 98 | $86.86 | $16K |
| 96413 Chemotherapy Administration | Office | 171 | 35 | $97.38 | $17K |
| 96372 Injection Administration | Office | 123 | 30 | $10.91 | $1,342 |
| 96375 Injection Administration | Office | 117 | 28 | $11.52 | $1,348 |
By year: 2022 $1.4M for 111,831 services; 2023 $1.9M for 123,990 services; 2024 $1.8M for 132,609 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 85025 Blood Count | 299 | 70 | $7.61 | $2,275 |
| 36415 Venipuncture Blood Collection | 247 | 90 | $7.10 | $1,754 |
| 80053 Clinical Chemistry | 114 | 26 | $10.35 | $1,180 |
| 85007 Blood Count | 51 | 26 | $3.65 | $186 |
| 85027 Blood Count | 51 | 26 | $6.22 | $317 |
| 82728 Clinical Chemistry | 46 | 22 | $13.36 | $615 |
| 86300 Immunoassay | 33 | 16 | $20.39 | $673 |
| 80076 Clinical Chemistry | 20 | 17 | $8.01 | $160 |
Medicare prescription drug claims, 2024
In 2024, the drug Robert M Zielinski prescribed most often to Medicare patients was Anastrozole, with 386 prescriptions and refills. In total Robert M Zielinski wrote 1,477 Medicare prescriptions that cost $4.2M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Anastrozole Generic | 386 | 700 | 89 | $8,167 |
| Hydroxyurea Generic | 197 | 352 | 36 | $7,037 |
| Imbruvica Ibrutinib | 124 | 124 | 13 | $1.9M |
| Exemestane Generic | 59 | 83 | 11 | $3,532 |
| Prednisone Generic | 57 | 62 | 21 | $419 |
| Prochlorperazine Maleate Generic | 50 | 54 | 38 | $903 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 45 | 45 | 15 | $1,084 |
| Dexamethasone Generic | 45 | 47 | 13 | $801 |
| Letrozole Generic | 42 | 86 | 11 | $1,158 |
| Brukinsa Zanubrutinib | 40 | 40 | Under 11 | $531K |
| Abiraterone Acetate Generic | 29 | 29 | Under 11 | $23K |
| Revlimid Lenalidomide | 22 | 22 | Under 11 | $400K |
| Procrit Epoetin Alfa | 22 | 22 | Under 11 | $135K |
| Warfarin Sodium Generic | 20 | 45 | Under 11 | $220 |
| Imatinib Mesylate Generic | 19 | 19 | Under 11 | $53K |
Brand drugs: 317 claims; generic drugs: 1,160 claims; opioid claims: 91.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Robert M Zielinski $15.99 ($15.99 in general payments such as food, travel and fees) from 1 company. The largest payer was Janssen Pharmaceuticals, Inc with $15.99.
| Company | Payments | Amount |
|---|---|---|
| Janssen Pharmaceuticals, Inc JNJ | 1 | $15.99 |
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.