Janusz Langiewicz, M.D.PH.D.
Allergy Physician · South Barrington, IL
Janusz Langiewicz, M.D.PH.D. is an allergy physician with a practice address in South Barrington, Illinois, and NPI 1801990007, issued on Sep 11, 2006. Check the license (Illinois 036075029, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Janusz Langiewicz
- Credential
- M.D.PH.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- 036075029 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1 Executive Center Ste 3, South Barrington, IL 60010
- Phone
- (847) 304-6999
- Enumerated
- Sep 11, 2006
- Record last updated
- Jan 4, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (847) 304-6888
- Medicaid ID
- 036075029 IL
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 56 in Illinois → Look up another NPI →
Verify Janusz Langiewicz 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 036075029Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average allergy physician in 2024
56 Medicare Part D claims, against an average of 750 among the 645 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.
Janusz Langiewicz among 56 allergy physician records in Illinois
Janusz Langiewicz, M.D.PH.D. is one of 56 allergy physician records with a practice address in Illinois. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 30% of them.
- NPI issued2006 · 30% of these records are older, 25% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileNo · 34% of these records are
- Record last updated2019 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in Illinois
There are 56 allergy physician records in Illinois.
All 56 in Illinois → Every provider in South Barrington → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Preeti Vemuri, MDBarrington, IL 600101548318488
- J Lemmon, M.D.Glenview, IL 600261750499356
- Paul Kentor, MDHighland Park, IL 600351538146758
- Scott Song, MDVernon Hills, IL 600611942282223
- Irma Oliff, MDNorthbrook, IL 600621811976475
- James Pollock, M.D.Winnetka, IL 600931629161484
- Deborah Pockross, MDElgin, IL 601231689781569
- Jacqueline Moran, MDGlen Ellyn, IL 601371518934967
Common questions
What is Janusz Langiewicz, M.D.PH.D.'s NPI number?
Janusz Langiewicz, M.D.PH.D.'s National Provider Identifier (NPI) is 1801990007, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Janusz Langiewicz, M.D.PH.D. located?
The NPPES record lists a practice address at 1 Executive Center Ste 3, South Barrington, IL, 60010. Phone: (847) 304-6999. Providers update this record themselves, so call before visiting.
How can I verify Janusz Langiewicz, M.D.PH.D.'s license?
NPPES lists Illinois license number 036075029, 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 Janusz Langiewicz, M.D.PH.D. prescribe under Medicare Part D?
In 2024, Janusz Langiewicz, M.D.PH.D. had 56 Medicare Part D claims; the average among allergy physician prescribers was 750. Part D covers Medicare prescriptions only.
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.