Internal Medicine, Nephrology · Evanston, IL
NPI
1114947124
Since 2006
Specialty
Internal Medicine, Nephrology
Code 207RN0300X
Group practices
1
Medicare group memberships
Hospitals
3
Hospital affiliations
1000 Central St Ste 800
Evanston, IL, 60201
Phone (847) 570-2512
Groups this clinician bills Medicare through
Medicare paid, 2024
$144K
1,480 services
Medicare patients, 2024
655
Average age 75
Drug cost, 2024
$504K
1,666 prescriptions
Company payments, 2025
$25K
From 18 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Stuart M Sprague was code 99215 (office e&m - established), 367 times for 327 patients. In total Stuart M Sprague billed 1,480 services in 25 codes, and Medicare paid $144K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-04-01.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99215 Office E&M - Established | Facility | 367 | 327 | $110.34 | $40K |
| 99232 Hospital E&M - Subsequent | Facility | 132 | 70 | $66.10 | $8,726 |
| 99233 Hospital E&M - Subsequent | Facility | 93 | 51 | $100.08 | $9,307 |
| 99214 Office E&M - Established | Facility | 89 | 89 | $73.56 | $6,547 |
| 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 | Facility | 82 | 75 | $13.19 | $1,082 |
| 90960 ESRD Related Services (not dialysis) | Office | 79 | 16 | $295.37 | $23K |
| 99205 Office E&M - New | Facility | 61 | 61 | $128.15 | $7,817 |
| 99223 Hospital E&M - Initial | Facility | 53 | 52 | $137.86 | $7,306 |
| 99231 Hospital E&M - Subsequent | Facility | 47 | 38 | $42.12 | $1,980 |
| 90966 ESRD Related Services (not dialysis) | Facility | 44 | 14 | $245.05 | $11K |
| 90935 Hemodialysis | Facility | 37 | 21 | $57.46 | $2,126 |
| 90961 ESRD Related Services (not dialysis) | Office | 34 | 12 | $246.00 | $8,364 |
| 99222 Hospital E&M - Initial | Facility | 26 | 26 | $111.26 | $2,893 |
By year: 2022 $126K for 1,033 services; 2023 $141K for 1,367 services; 2024 $144K for 1,480 services.
Medicare prescription drug claims, 2024
In 2024, the drug Stuart M Sprague prescribed most often to Medicare patients was Indapamide, with 314 prescriptions and refills. In total Stuart M Sprague wrote 1,666 Medicare prescriptions that cost $504K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Indapamide Generic | 314 | 915 | 99 | $3,892 |
| Potassium Citrate Er Potassium Citrate | 141 | 361 | 42 | $18K |
| Chlorthalidone Generic | 140 | 412 | 38 | $1,727 |
| Allopurinol Generic | 90 | 270 | 34 | $1,130 |
| Potassium Chloride Generic | 53 | 147 | 18 | $1,485 |
| Furosemide Generic | 50 | 143 | 18 | $442 |
| Amlodipine Besylate Generic | 42 | 120 | 12 | $403 |
| Calcitriol Generic | 40 | 115 | 11 | $649 |
| Alendronate Sodium Generic | 40 | 112 | 12 | $398 |
| Farxiga Dapagliflozin Propanediol | 40 | 56 | 11 | $32K |
| Vitamin D2 Ergocalciferol (Vitamin D2) | 38 | 109 | 13 | $511 |
| Amiloride Hcl Generic | 37 | 111 | 12 | $708 |
| Prednisone Generic | 36 | 82 | Under 11 | $325 |
| Carvedilol Generic | 28 | 80 | Under 11 | $265 |
| Losartan Potassium Generic | 28 | 84 | Under 11 | $510 |
Brand drugs: 254 claims; generic drugs: 1,398 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Stuart M Sprague $25K ($25K in general payments such as food, travel and fees) from 18 companies. The largest payer was Ardelyx, Inc. with $16K.
| Company | Payments | Amount |
|---|---|---|
| Ardelyx, Inc. ARDX | 17 | $16K |
| Ascendis Pharma Endocrinology Inc ASND | 4 | $3,641 |
| OPKO Pharmaceuticals, LLC | 1 | $1,920 |
| Kyowa Kirin, Inc. 4151.T | 2 | $1,840 |
| Novartis Pharmaceuticals Corporation NVS | 2 | $148 |
| Novo Nordisk Inc NVO | 2 | $141 |
| Akebia Therapeutics Inc AKBA | 1 | $123 |
| Otsuka America Pharmaceutical, Inc. 4578.T | 3 | $70.51 |
| Bayer Healthcare Pharmaceuticals Inc. BAYN.DE | 2 | $64.44 |
| Alexion Pharmaceuticals, Inc. AZN | 2 | $61.03 |
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.