Benjamin Lewis Karfunkle, MD
Emergency Medicine Physician · Chicago, IL
Benjamin Lewis Karfunkle, MD is an emergency medicine physician with a practice address in Chicago, Illinois, and NPI 1336533207, issued on Mar 27, 2015. Check the license (Illinois 036.177797, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Benjamin Lewis Karfunkle
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036.177797 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1653 W Congress Pkwy, Chicago, IL 60612
- Phone
- (312) 942-5000
- Enumerated
- Mar 27, 2015
- Record last updated
- Nov 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20251121003909); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 1653 W Congress Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Benjamin Lewis Karfunkle 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 036.177797Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average emergency medicine physician in 2024
19 Medicare Part D claims for 14 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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): 82.4 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).
Bills Medicare through 2 group practices
- Rush University Medical GroupChicago, IL
- UT PhysiciansHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin Lewis Karfunkle among 3,291 emergency medicine physician records in Illinois
Benjamin Lewis Karfunkle, 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 2015, is newer than 61% of them.
- NPI issued2015 · 61% of these records are older, 35% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2015 · median 2012 among the 1,867 with a school on file
- Record last updated2025 · 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).
1,310 emergency medicine physician records list a practice address in Chicago
They are 1,310 of the 63,379 NPPES records with a practice address in Chicago, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Chicago → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Joseph Brawka, M.D.Chicago, IL 606121174599112
- Christopher Caudill, MDChicago, IL 606121013993104
- Galeta Clayton, M.D.Chicago, IL 606121588630743
- Jennifer Fleming, M.D.Chicago, IL 606121912973975
- Jeffrey Grassle, M.D.Chicago, IL 606121205802147
- Marilyn Hallock, M.D.Chicago, IL 606121336110691
- Mumtaz Husain, M.D.Chicago, IL 606121891761953
- Paula Oldeg, M.D.Chicago, IL 606121568438687
Common questions
What is Benjamin Lewis Karfunkle, MD's NPI number?
Benjamin Lewis Karfunkle, MD's National Provider Identifier (NPI) is 1336533207, issued on Mar 27, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Lewis Karfunkle, MD located?
The NPPES record lists a practice address at 1653 W Congress Pkwy, Chicago, IL, 60612. Phone: (312) 942-5000. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Lewis Karfunkle, MD's license?
NPPES lists Illinois license number 036.177797, 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 Benjamin Lewis Karfunkle, MD prescribe under Medicare Part D?
In 2024, Benjamin Lewis Karfunkle, MD had 19 Medicare Part D claims for 14 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Benjamin Lewis Karfunkle, MD's MIPS final score?
The 2023 MIPS final score is 82.4 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.