Robert Lejawa, D.O.
Family Medicine Physician · Naperville, IL
Robert Lejawa, D.O. is a family medicine physician with a practice address in Naperville, Illinois, and NPI 1265592596, issued on Dec 8, 2006. Check the license (Illinois 036179386, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Robert Lejawa
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 036179386 IL
2019-00158 NC
N1731 TX
49846-021 WI
Self-reported in NPPES; status is on the state search - Practice location
- 120 Spalding Dr., Naperville, IL 60540
- Phone
- (630) 527-5575
- Enumerated
- Dec 8, 2006
- Record last updated
- May 19, 2026
- Fax
- (630) 527-5573
- Medicare enrollment
- Enrolled (PECOS I20260528001537); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify Robert Lejawa 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 036179386Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average family medicine physician in 2024
2,599 Medicare Part D claims for 181 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 11 claims were for opioids.
Most prescribed
- Atorvastatin Calcium235 claims
- Amlodipine Besylate152 claims
- Losartan Potassium110 claims
- Metformin Hcl94 claims
- Levothyroxine Sodium85 claims
- Montelukast Sodium78 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.
Bills Medicare through 2 group practices
- Novant Health Medical Group, LLCCharlotte, NC
- The Weston Group IncCharlotte, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Lejawa among 6,215 family medicine physician records in Illinois
Robert Lejawa, D.O. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2005 · median 2006 among the 3,714 with a school on file
- Record last updated2026 · 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 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
86 family medicine physician records list a practice address in Naperville
They are 86 of the 4,634 NPPES records with a practice address in Naperville, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Naperville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Matthew Carducci, M.D.Naperville, IL 605401093762338
- Karla Dorsey-Johnson, MDNaperville, IL 605401245205731
- Stephanie Dressler, PA CNaperville, IL 605401629068234
- Hiam Eldewek, D.O.Naperville, IL 605401639128309
- Michael Fitzgerald, MDNaperville, IL 605401346215407
- Fowzia Ghouse, MDNaperville, IL 605401215923826
- Ronald Glas, MDNaperville, IL 605401720075484
- Kaleem Khan, M.D.Naperville, IL 605401619917713
Common questions
What is Robert Lejawa, D.O.'s NPI number?
Robert Lejawa, D.O.'s National Provider Identifier (NPI) is 1265592596, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Lejawa, D.O. located?
The NPPES record lists a practice address at 120 Spalding Dr., Naperville, IL, 60540. Phone: (630) 527-5575. Providers update this record themselves, so call before visiting.
How can I verify Robert Lejawa, D.O.'s license?
NPPES lists Illinois license number 036179386, 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 Robert Lejawa, D.O. prescribe under Medicare Part D?
In 2024, Robert Lejawa, D.O. had 2,599 Medicare Part D claims for 181 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.