Olga Zavelsky, M.D.
Emergency Medicine Physician · Chicago, IL
Olga Zavelsky, M.D. is an emergency medicine physician with a practice address in Chicago, Illinois, and NPI 1386840395, issued on Jun 26, 2007. Check the license (Illinois 036-118711, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Olga Zavelsky
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036-118711 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1501 S California Ave, Chicago, IL 60608
- Phone
- (773) 257-6843
- Enumerated
- Jun 26, 2007
- Record last updated
- Sep 28, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070910000818); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 1501 S California Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Olga Zavelsky 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 036-118711Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 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 one group practice
- Cepamerica Illinois LLPChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Olga Zavelsky among 3,291 emergency medicine physician records in Illinois
Olga Zavelsky, M.D. 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 2007, is newer than 32% of them.
- NPI issued2007 · 32% of these records are older, 61% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2004 · median 2012 among the 1,867 with a school on file
- Record last updated2018 · 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
- Harlan Bogie, M.D.Chicago, IL 606081174523658
- Stephen Boren, M.D.Chicago, IL 606081184624546
- Tobin Efferen, M.D.Chicago, IL 606081780778472
- Stephanie Eugene, M.D.Chicago, IL 606081265691646
- Jorge Ferrer, M.D.Chicago, IL 606081225038680
- Earl Fredrick, M.D.Chicago, IL 606081467452839
- Erik Kulstad, M.D.Chicago, IL 606081518967751
- Harvey Louzon, M.D.Chicago, IL 606081386669703
Common questions
What is Olga Zavelsky, M.D.'s NPI number?
Olga Zavelsky, M.D.'s National Provider Identifier (NPI) is 1386840395, issued on Jun 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Olga Zavelsky, M.D. located?
The NPPES record lists a practice address at 1501 S California Ave, Chicago, IL, 60608. Phone: (773) 257-6843. Providers update this record themselves, so call before visiting.
How can I verify Olga Zavelsky, M.D.'s license?
NPPES lists Illinois license number 036-118711, 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.
What is Olga Zavelsky, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 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.