STUART M SPRAGUE (DO) – Nephrology Physician, NPI 1114947124
Nephrology Physician
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
629 NEPHROLOGY in IL
Provider Addresses for STUART M SPRAGUE (DO)
2650 Ridge Ave
Division of Nephrology Rm 3213
Evanston, IL 602011718
Phone: (847) 570-2512
Fax: (847) 570-1696
Type: Location
1000 CENTRAL ST STE 800
EVANSTON, IL 602011780
Phone: (847) 570-2512
Fax: (847) 570-1696
Type: Mailing
Evanston Hospital, 2650, Ridge Avenue, Evanston, Evanston Township, Cook County, Illinois, 60201, United States
EVANSTON HOSPITAL
EVANSTON, IL 602011718
Phone: (847) 570-1206
Fax: (847) 570-1248
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 139 Open Payments records for all available years, with a total value of $64,871.
Total Amount is formed as General ($64,871) + Research ($0) + Ownership ($0) = $64,871.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Ardelyx, Inc. ($32,170).
Total Amount
$64,871
General + Research + Ownership
Payments
139
Total payment records
General Amount
$64,871
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Ardelyx, Inc. | $32,170 |
| Kyowa Kirin, Inc. | $18,348 |
| Bayer Healthcare Pharmaceuticals Inc. | $6,865 |
| Amgen Inc. | $3,820 |
| Horizon Therapeutics plc | $1,000 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-08-24
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040824001038 | I | Nephrology | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 399 | 338 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 93 | 92 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 93 | 50 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 79 | 45 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 75 | 75 | $0 |
Insurance plans in this area (ZIP 60201)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IL | |
| E N D O C R I N O L O G Y | IL | |
| N E U R O L O G Y | IL | |
| Hospitalist, Internal Medicine | IL | |
| O P H T H A L M O L O G Y | IL | |
| - | IL | |
| E N D O C R I N O L O G Y | IL | |
| Diagnostic Radiology | IL | |
| Family Practice | IL | |
| - | IL |
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