Katarzyna Zarnecki, DO
Endocrinology, Diabetes & Metabolism Physician · Skokie, IL
Katarzyna Zarnecki, DO is an endocrinology, diabetes & metabolism physician with a practice address in Skokie, Illinois, and NPI 1063660488, issued on Aug 28, 2008. Check the license (Illinois 125052582, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Katarzyna Zarnecki
- Credential
- DO
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 125052582 IL
125.052582 IL
Self-reported in NPPES; status is on the state search - Practice location
- 9977 Woods Dr, Skokie, IL 60077
- Phone
- (847) 663-8540
- Enumerated
- Aug 28, 2008
- Record last updated
- Mar 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (847) 663-1015
- Medicare enrollment
- Enrolled (PECOS I20110309000365); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
Also registered at 9977 Woods Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nia Abraham, PA-CPhysician Assistant1689141806
- Michael Abromaitis, RDNRegistered Dietitian1710402797
- Jessie Alexander, APNNurse Practitioner1770096950
- Michael Anderson, APNNurse Practitioner1699459636
- Mary Andreoni, MSN,NP-C,CDEAdult Health Nurse Practitioner1467694034
- Eamann Ayyad, APN-CNPNurse Practitioner1083171813
Verify Katarzyna Zarnecki in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 125052582Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
3,937 Medicare Part D claims for 463 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Levothyroxine Sodium480 claims
- Ozempic307 claims
- Metformin Hcl Er288 claims
- Lantus Solostar206 claims
- Metformin Hcl188 claims
- Repaglinide173 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Endeavor Health Medical GroupEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katarzyna Zarnecki among 436 endocrinology, diabetes & metabolism physician records in Illinois
Katarzyna Zarnecki, DO is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 43% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2007 · median 2006 among the 295 with a school on file
- Record last updated2021 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Illinois
There are 436 endocrinology, diabetes & metabolism physician records in Illinois.
All 436 in Illinois → Every provider in Skokie → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Liana Billings, MD, MMSCSkokie, IL 600771457528101
- Romy Block, MDSkokie, IL 600771922032093
- Herman Blomeier, M.D.Skokie, IL 600771003011800
- Theodore MazzoneSkokie, IL 600771962515403
- Priscilla Mutharasan, M.D.Skokie, IL 600771790932028
- Tama Porter, MDSkokie, IL 600771801085055
- Lisa Purdy, MDSkokie, IL 600771174557243
- Pauline Shipley, MDSkokie, IL 600771477589067
Common questions
What is Katarzyna Zarnecki, DO's NPI number?
Katarzyna Zarnecki, DO's National Provider Identifier (NPI) is 1063660488, issued on Aug 28, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Katarzyna Zarnecki, DO located?
The NPPES record lists a practice address at 9977 Woods Dr, Skokie, IL, 60077. Phone: (847) 663-8540. Providers update this record themselves, so call before visiting.
How can I verify Katarzyna Zarnecki, DO's license?
NPPES lists Illinois license number 125052582, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katarzyna Zarnecki, DO prescribe under Medicare Part D?
In 2024, Katarzyna Zarnecki, DO had 3,937 Medicare Part D claims for 463 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Katarzyna Zarnecki, DO's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.