Karl Brenner, MD
About This Business
Karl Brenner, MD, is an internal medicine physician in Ann Arbor, Michigan, in practice for 30 years since graduating from the University of Michigan Medical School in 1996, above the 25-year average among the 206 Ann Arbor physicians in our directory. He holds an active Michigan license and has been registered with the national provider registry since 2006. Hospital affiliations include Trinity Health Ann Arbor Hospital, Trinity Health Livingston Hospital, Chelsea Hospital, St Joe Mercy Hospital System Livonia, and University of Michigan Health System. He accepts Medicare and offers telehealth, one of 50 city doctors in our directory offering both. Patients rate him 5.0 across 21 reviews.
Verified Provider Info
- Specialty (per registry)
- Internal Medicine
- NPI Number
- 1033186770
- Medical school graduate
- 1996 (30+ years of practice)
- Medical school
- UNIVERSITY OF MICHIGAN MEDICAL SCHOOL
- State license
- 4301067854 (MI)
- Hospital affiliations
- Trinity Health Ann Arbor Hospital · Trinity Health Livingston Hospital · Chelsea Hospital
Source: NPPES NPI Registry (CMS) · CMS Doctors & Clinicians dataset · checked 2026-08-18
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Information last updated: September 7, 2026
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