John Oscar Kowalski, M.D.
Pediatrics Physician · Oak Lawn, IL
John Oscar Kowalski, M.D. is a pediatrics physician with a practice address in Oak Lawn, Illinois, and NPI 1396711875, issued on Feb 24, 2006. Check the license (Illinois 036-075588, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Oscar Kowalski
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 036-075588 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5669 W. 95TH St., Oak Lawn, IL 60453
- Phone
- (708) 499-4400
- Enumerated
- Feb 24, 2006
- Record last updated
- Feb 27, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (708) 499-4407
- Medicaid ID
- 036-075588 IL
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 3,176 in Illinois → Look up another NPI →
Verify John Oscar Kowalski 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 036-075588Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Oscar Kowalski among 3,176 pediatrics physician records in Illinois
John Oscar Kowalski, M.D. is one of 3,176 pediatrics physician records with a practice address in Illinois. 32% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileNo · 32% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2012 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
115 pediatrics physician records list a practice address in Oak Lawn
They are 115 of the 2,993 NPPES records with a practice address in Oak Lawn, and 3,176 pediatrics physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,176 in Illinois → Every provider in Oak Lawn → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- April Bellamy-Peyton, MDOak Lawn, IL 604531104939164
- Mark Butterly, M.D.Oak Lawn, IL 604531366559072
- Verlainna Callentine, M.D., M.ED.Oak Lawn, IL 604531043312051
- John Cueva, M.D.Oak Lawn, IL 604531457346355
- Kimberley Dilley, MDOak Lawn, IL 604531740244151
- Farzana Izhar, MDOak Lawn, IL 604531801850045
- Cynthia Mears, DOOak Lawn, IL 604531245292283
- Kanchana Rajasekhar, M.D.Oak Lawn, IL 604531881628840
Common questions
What is John Oscar Kowalski, M.D.'s NPI number?
John Oscar Kowalski, M.D.'s National Provider Identifier (NPI) is 1396711875, issued on Feb 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Oscar Kowalski, M.D. located?
The NPPES record lists a practice address at 5669 W. 95TH St., Oak Lawn, IL, 60453. Phone: (708) 499-4400. Providers update this record themselves, so call before visiting.
How can I verify John Oscar Kowalski, M.D.'s license?
NPPES lists Illinois license number 036-075588, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.