Michael Henry Oster, D.O.
Emergency Medicine Physician · Gurnee, IL
Michael Henry Oster, D.O. is an emergency medicine physician with a practice address in Gurnee, Illinois, and NPI 1356333991, issued on Aug 19, 2005. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Michael Henry Oster
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 39679-021 WI
Self-reported in NPPES; status is on the state search - Practice location
- 34555 N Red Oak LN, Gurnee, IL 60031
- Phone
- (847) 244-0678
- Enumerated
- Aug 19, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (847) 244-0886
- Medicare enrollment
- Enrolled (PECOS I20120626000270); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1978
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Verify Michael Henry Oster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Addiction Services And Pharmacotherapy SCMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Henry Oster among 3,291 emergency medicine physician records in Illinois
Michael Henry Oster, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1978 · median 2012 among the 1,867 with a school on file
- Record last updated2026 · 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).
Emergency Medicine Physician providers in Illinois
There are 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Gurnee → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Dionisio Yorro, M.D.Gurnee, IL 600311942245147
- Mohammad Amir, D.O.Harvard, IL 600331386036085
- Victor Garber, MDHarvard, IL 600331609869163
- David Kavanaugh, DOHarvard, IL 600331437176070
- Joseph Levenstein, MDHarvard, IL 600331003849563
- James Sullivan, MDHarvard, IL 600331891805081
- Bruce Harris, MDHighland Park, IL 600351679631931
- Mart Jalakas, MDHighland Park, IL 600351467513630
Common questions
What is Michael Henry Oster, D.O.'s NPI number?
Michael Henry Oster, D.O.'s National Provider Identifier (NPI) is 1356333991, issued on Aug 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael Henry Oster, D.O. located?
The NPPES record lists a practice address at 34555 N Red Oak LN, Gurnee, IL, 60031. Phone: (847) 244-0678. Providers update this record themselves, so call before visiting.
How can I verify Michael Henry Oster, D.O.'s license?
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. 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.