Leo Dilan, D.O.
Emergency Medicine Physician · Chicago, IL
Leo Dilan, D.O. is an emergency medicine physician with a practice address in Chicago, Illinois, and NPI 1598717944, issued on May 16, 2006. Check the license (Illinois 036100609, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Leo Dilan
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036100609 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5145 N California Ave, Chicago, IL 60625
- Phone
- (773) 878-8200
- Enumerated
- May 16, 2006
- Record last updated
- Nov 13, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040522000120); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Med & Biosciences, College Of Osteo Med, 1995
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 5145 N California Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sawsan Alzukaimi, MDSurgery Physician1184147688
- Basava Ancha, MDInternal Medicine Physician1265488647
- Abigail Anderson, DOInternal Medicine Physician1154263168
Verify Leo Dilan 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 036100609Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average emergency medicine physician in 2024
60 Medicare Part D claims for 46 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.
Bills Medicare through one group practice
- Endeavor Health Medical GroupEvanston, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leo Dilan among 3,291 emergency medicine physician records in Illinois
Leo Dilan, D.O. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 68% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1995 · median 2012 among the 1,867 with a school on file
- Record last updated2008 · 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
- Andrew Costello, MDChicago, IL 606251710931001
- Neha Dave, D.O.Chicago, IL 606251750602314
- Yelena Dukarevich, MDChicago, IL 606251699093823
- Artemis Khojasteh, M.D.Chicago, IL 606251063689552
- Kirk Kittikamron, D.O.Chicago, IL 606251972769222
- Patrick Malik, DOChicago, IL 606251942247135
- Bruce McNulty, MDChicago, IL 606251629015839
- Jerrold Noble, MDChicago, IL 606251447297650
Common questions
What is Leo Dilan, D.O.'s NPI number?
Leo Dilan, D.O.'s National Provider Identifier (NPI) is 1598717944, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leo Dilan, D.O. located?
The NPPES record lists a practice address at 5145 N California Ave, Chicago, IL, 60625. Phone: (773) 878-8200. Providers update this record themselves, so call before visiting.
How can I verify Leo Dilan, D.O.'s license?
NPPES lists Illinois license number 036100609, 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 Leo Dilan, D.O. prescribe under Medicare Part D?
In 2024, Leo Dilan, D.O. had 60 Medicare Part D claims for 46 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.