Sarah Clark, MD
NPI 1376621300 · Cytopathology Physician · Naperville, IL
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Clark, MD is a Cytopathology Physician provider in Naperville, IL (NPI 1376621300).
Provider details
- NPI number
- 1376621300
- Entity type
- Individual
- Primary specialty
- Cytopathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,497 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 644 | $36 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 505 | $27 |
| Immunologic Analysis Technique on Serum (immunofixation)86334 | 243 | $17 |
| Protein Measurement, Serum84165 | 241 | $17 |
| Cell Examination of Specimen, Concentration Technique88108 | 163 | $22 |
| Evaluation of Fine Needle Aspirate With Interpretation and Report88173 | 136 | $67 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2025-09-11
Frequently asked questions
- What is Sarah Clark's NPI number?
- Sarah Clark's National Provider Identifier (NPI) is 1376621300, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Clark's specialty?
- Sarah Clark is listed in the NPPES registry with a primary specialty of Cytopathology Physician (Allopathic & Osteopathic Physicians).
- Where is Sarah Clark located?
- Sarah Clark's practice location on file with NPPES is 801 S Washington Street, Naperville, IL 60566-7060.
- What is Sarah Clark's phone number?
- The practice phone number listed in the NPPES registry for Sarah Clark is (630) 355-0450.
- Does Sarah Clark accept Medicare?
- Sarah Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Clark's NPI active?
- Yes — Sarah Clark's NPI (1376621300) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.