Michael Brennan, DO, MPH
Michael Brennan, DO, MPH is a critical care medicine (internal medicine) physician practicing in Chicago, IL. The NPI was issued on April 15, 2019, and the record was last updated in NPPES on September 24, 2025. The record lists 4 taxonomy codes. 4 additional practice locations are listed.
Taxonomies and licenses
| Taxonomy | Code | License |
|---|---|---|
| Critical Care Medicine (Internal Medicine) Physician Primary | 207RC0200X | 036.164300 (IL) |
| Emergency Medicine Physician | 207P00000X | 5101025918 (MI) |
| Emergency Medicine Physician | 207P00000X | 036.164300 (IL) |
| Emergency Medicine Physician | 207P00000X | 5151013942 (MI) |
Practice locations
Local context
Active NPPES records list 199 providers with critical care medicine (internal medicine) physician as the primary taxonomy within 25 miles of this practice location's ZIP code, 68 of them within 10 miles.
The same primary taxonomy is listed by 306 in Illinois and 7,319 nationwide.
These are counts from NPPES records, not a ranking or recommendation. Distances are measured between ZIP code centers, not street addresses.
Record history
- Name on record
- Dr. Michael James Brennan
- Status
- Active
- NPI issued
- Last updated in NPPES
Is this your record? Updates are made through NPPES, the official National Plan and Provider Enumeration System.
NPPES data as of · Source: CMS NPPES
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