Katarzyna Zarnecki, DO
NPI 1063660488 · Endocrinology, Diabetes & Metabolism Physician · Skokie, IL
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katarzyna Zarnecki, DO is a Endocrinology, Diabetes & Metabolism Physician provider in Skokie, IL (NPI 1063660488).
Provider details
- NPI number
- 1063660488
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 125.052582 (IL)
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
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
886 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 384 | $102 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 142 | $83 |
| 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 | 129 | $17 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 103 | $36 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 71 | $151 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 480 | 126 |
| Semaglutidebrand: Ozempic | 307 | 82 |
| Metformin Hclbrand: Metformin Hcl Er | 288 | 97 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 206 | 80 |
| Metformin Hcl | 188 | 61 |
| Repaglinide | 173 | 59 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-08-28
- Last updated
- 2021-03-03
- Certified
- 2021-03-03
Frequently asked questions
- What is Katarzyna Zarnecki's NPI number?
- Katarzyna Zarnecki's National Provider Identifier (NPI) is 1063660488, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katarzyna Zarnecki's specialty?
- Katarzyna Zarnecki is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Katarzyna Zarnecki located?
- Katarzyna Zarnecki's practice location on file with NPPES is 9977 Woods Dr, Skokie, IL 60077-1057.
- What is Katarzyna Zarnecki's phone number?
- The practice phone number listed in the NPPES registry for Katarzyna Zarnecki is (847) 663-8540.
- Does Katarzyna Zarnecki accept Medicare?
- Katarzyna Zarnecki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katarzyna Zarnecki's NPI active?
- Yes — Katarzyna Zarnecki's NPI (1063660488) is active in the NPPES registry as of the last update on 2021-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.