Katherine Tokarczyk, MD
Emergency Medicine Physician · Libertyville, IL
Katherine Tokarczyk, MD is an emergency medicine physician with a practice address in Libertyville, Illinois, and NPI 1225492515, issued on Apr 12, 2016. Check the license (Illinois 036.149835, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Katherine Tokarczyk
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 036.149835 IL
81161 WI
Self-reported in NPPES; status is on the state search - Practice location
- 801 S Milwaukee Ave, Libertyville, IL 60048
- Phone
- (847) 990-5300
- Enumerated
- Apr 12, 2016
- Record last updated
- Nov 17, 2023
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 801 S Milwaukee Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ellen Adler, MS CCC-SLPSpeech-Language Pathologist1700809647
- Nasreen Ahmed, M.D.Hospitalist Physician1699070540
- Natasha Ali, PACPhysician Assistant1487096483
- Sarah Alkilany, MDAnesthesiology Physician1922673953
- Dominique AreolaPediatric Occupational Therapist1669933594
- Jenna AshleySurgical Physician Assistant1346082153
Verify Katherine Tokarczyk 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 036.149835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% more Medicare Part D claims than the average emergency medicine physician in 2024
326 Medicare Part D claims for 192 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 40 claims were for opioids.
Most prescribed
- Ondansetron Odt37 claims
- Naproxen25 claims
- Methylprednisolone24 claims
- Cephalexin23 claims
- Dicyclomine Hcl17 claims
- Baclofen13 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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Katherine Tokarczyk among 3,291 emergency medicine physician records in Illinois
Katherine Tokarczyk, MD is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 65% of them.
- NPI issued2016 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2023 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 emergency medicine physician records list a practice address in Libertyville
They are 15 of the 1,361 NPPES records with a practice address in Libertyville, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Libertyville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Christopher Beach, M.D.Libertyville, IL 600481649245564
- J Eric Castro, MDLibertyville, IL 600481316971807
- Andrew Geiser, MDLibertyville, IL 600481891343133
- Joshua Hallett, D.O.Libertyville, IL 600481336452861
- Roy Horras, M.D., FACEPLibertyville, IL 600481255356663
- Shahab Kazi, DOLibertyville, IL 600481194306894
- Peter Kurko, M.D.Libertyville, IL 600481225065782
- Rachel McDowell, MDLibertyville, IL 600481104879071
Common questions
What is Katherine Tokarczyk, MD's NPI number?
Katherine Tokarczyk, MD's National Provider Identifier (NPI) is 1225492515, issued on Apr 12, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Tokarczyk, MD located?
The NPPES record lists a practice address at 801 S Milwaukee Ave, Libertyville, IL, 60048. Phone: (847) 990-5300. Providers update this record themselves, so call before visiting.
How can I verify Katherine Tokarczyk, MD's license?
NPPES lists Illinois license number 036.149835, 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 Katherine Tokarczyk, MD prescribe under Medicare Part D?
In 2024, Katherine Tokarczyk, MD had 326 Medicare Part D claims for 192 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Katherine Tokarczyk, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.