Michael Oster, D.O.
NPI 1356333991 · Emergency Medicine Physician · Gurnee, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Oster, D.O. is a Emergency Medicine Physician provider in Gurnee, IL (NPI 1356333991).
Provider details
- NPI number
- 1356333991
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- License
- 39679-021 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-19
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Oster's NPI number?
- Michael Oster's National Provider Identifier (NPI) is 1356333991, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Oster's specialty?
- Michael Oster is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Oster located?
- Michael Oster's practice location on file with NPPES is 34555 N Red Oak Ln, Gurnee, IL 60031-2563.
- What is Michael Oster's phone number?
- The practice phone number listed in the NPPES registry for Michael Oster is (847) 244-0678.
- Does Michael Oster accept Medicare?
- Michael Oster is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Oster's NPI active?
- Yes — Michael Oster's NPI (1356333991) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.