Internal Medicine, Nephrology · Chicago, IL
NPI
1598708877
Since 2006
Specialty
Internal Medicine, Nephrology
Code 207RN0300X
Group practices
1
Medicare group memberships
Hospitals
5
Hospital affiliations
2608 W Addison St
Chicago, IL, 60618
Phone (773) 756-3333
Groups this clinician bills Medicare through
Medicare paid, 2024
$255K
11,048 services
Medicare patients, 2024
427
Average age 72
Drug cost, 2024
$309K
1,356 prescriptions
Company payments, 2025
$314
From 7 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Mark P Leischner was code Q9967 (low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml), 8,660 times for 109 patients. In total Mark P Leischner billed 11,048 services in 38 codes, and Medicare paid $255K.
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2024-11-22.
| Code | Setting | Services | Patients | Paid per service | Medicare paid |
|---|
| Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | Office | 8,660 | 109 | $0.11 | $911 |
| J3010 Injection, fentanyl citrate, 0.1 mg | Office | 456 | 77 | $0.72 | $327 |
| 99214 Office E&M - Established | Office | 322 | 157 | $54.09 | $17K |
| 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 | 311 | 151 | $11.59 | $3,605 |
| J2250 Injection, midazolam hydrochloride, per 1 mg | Office | 254 | 78 | $0.11 | $27.48 |
| 99232 Hospital E&M - Subsequent | Facility | 161 | 69 | $58.74 | $9,458 |
| 90960 ESRD Related Services (not dialysis) | Office | 129 | 19 | $261.25 | $34K |
| 99152 Anesthesia | Office | 103 | 70 | $36.93 | $3,803 |
| 36902 A-V Fistula PCI | Office | 87 | 62 | $870.82 | $76K |
| 90961 ESRD Related Services (not dialysis) | Office | 73 | 25 | $216.21 | $16K |
| 36901 Angiography | Office | 62 | 49 | $514.51 | $32K |
| 99222 Hospital E&M - Initial | Facility | 44 | 40 | $98.46 | $4,332 |
| 99204 Office E&M - New | Office | 42 | 42 | $116.07 | $4,875 |
| 99233 Hospital E&M - Subsequent | Facility | 30 | 17 | $88.76 | $2,663 |
By year: 2022 $410K for 7,475 services; 2023 $284K for 6,524 services; 2024 $255K for 11,048 services.
Medicare prescription drug claims, 2024
In 2024, the drug Mark P Leischner prescribed most often to Medicare patients was Calcitriol, with 235 prescriptions and refills. In total Mark P Leischner wrote 1,356 Medicare prescriptions that cost $309K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Calcitriol Generic | 235 | 479 | 62 | $3,997 |
| Furosemide Generic | 113 | 262 | 32 | $823 |
| Amlodipine Besylate Generic | 78 | 191 | 29 | $531 |
| Farxiga Dapagliflozin Propanediol | 74 | 110 | 19 | $63K |
| Nifedipine Er Nifedipine | 72 | 176 | 20 | $1,891 |
| Jardiance Empagliflozin | 67 | 94 | 13 | $56K |
| Losartan Potassium Generic | 53 | 143 | 21 | $386 |
| Sevelamer Carbonate Generic | 39 | 83 | 17 | $6,989 |
| Carvedilol Generic | 39 | 102 | 14 | $338 |
| Atorvastatin Calcium Generic | 38 | 99 | 14 | $251 |
| Lisinopril Generic | 38 | 102 | 18 | $242 |
| Hydrochlorothiazide Generic | 34 | 85 | 11 | $286 |
| Hydralazine Hcl Generic | 28 | 40 | Under 11 | $264 |
| Gabapentin Generic | 26 | 40 | Under 11 | $435 |
| Allopurinol Generic | 23 | 51 | Under 11 | $106 |
Brand drugs: 216 claims; generic drugs: 1,140 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Mark P Leischner $314 ($314 in general payments such as food, travel and fees) from 7 companies. The largest payer was Fresenius USA Marketing, Inc. with $73.38.
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.