Stuart Sprague, DO
NPI 1114947124 · Nephrology Physician · Evanston, IL
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stuart Sprague, DO is a Nephrology Physician provider in Evanston, IL (NPI 1114947124).
Provider details
- NPI number
- 1114947124
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 036066785 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,144 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 367 | $152 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 132 | $83 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 93 | $125 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $102 |
| 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'SG2211 | 82 | $17 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Indapamide | 314 | 99 |
| Potassium Citratebrand: Potassium Citrate Er | 141 | 42 |
| Chlorthalidone | 140 | 38 |
| Allopurinol | 90 | 34 |
| Potassium Chloride | 53 | 18 |
| Furosemide | 50 | 18 |
| Amlodipine Besylate | 42 | 12 |
| Alendronate Sodium | 40 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$50,090 across 92 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 2650 Ridge AveDivision of Nephrology Rm 3213Evanston, IL 60201-1718Phone: (847) 570-2512Fax: (847) 570-1696
Registry dates
- Enumerated
- 2006-07-20
- Last updated
- 2021-04-01
- Certified
- 2021-04-01
Frequently asked questions
- What is Stuart Sprague's NPI number?
- Stuart Sprague's National Provider Identifier (NPI) is 1114947124, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stuart Sprague's specialty?
- Stuart Sprague is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Stuart Sprague located?
- Stuart Sprague's practice location on file with NPPES is 1000 Central St Ste 800, Evanston, IL 60201-1780.
- What is Stuart Sprague's phone number?
- The practice phone number listed in the NPPES registry for Stuart Sprague is (847) 570-2512.
- Does Stuart Sprague accept Medicare?
- Stuart Sprague is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stuart Sprague's NPI active?
- Yes — Stuart Sprague's NPI (1114947124) is active in the NPPES registry as of the last update on 2021-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.