Dr. Karl Brenner, MD
Internal Medicine
4200 Whitehall Dr, Suite 130
Ann Arbor, MI 48105 Directions
4.8 out of 5
525 verified ratings
525 Ratings, 173 Comments
The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Mar 23, 2026
Excellent physician. Highly recommend.
Mar 20, 2026
Dr. Brenner is very attentive to your problems and very proffesional.
Mar 19, 2026
Tends to focus more on laptop than me as the patient. My impression of the annual physical was he did not spend much time physically checking me. Pressed on my neck, used stethoscope to listen to lungs and heart, and looked in mouth and nose, but not much else. No stress test.
Mar 19, 2026
Very knowledgeable, patient, and kind. Explains medical conditions clearly and provides thoughtful, effective recommendations and treatment options.
Mar 16, 2026
Thank you
Mar 12, 2026
dr brenner is very proffesional and atentive to your concerns.
Mar 11, 2026
Very professional and thorough. Calm and friendly.
Mar 11, 2026
If my current primary doctor moved away or retired I would be comfortable becoming one of his patients
Mar 9, 2026
I feel very fortunate to have Dr. Brenner as my physician. He's always been right with diagnoses and really has made a positive difference in my health.
Mar 2, 2026
Excellent doctor
Mar 2, 2026
Good visit. Very focused.
Mar 2, 2026
He has always seen I got the help I needed.
Mar 2, 2026
Good man who understands the nuances to serving older men
Mar 2, 2026
I've been a patient of Doctor Brenner for many years. I know he saved my life and keeps me going in the right direction
Feb 18, 2026
I am grateful for the referral to ortho !
Feb 17, 2026
Listens well, offers good options for care, knowledgable, courteous and friendly.
Feb 13, 2026
Excellent general practioner.
Feb 12, 2026
I think he is a good general practioner.
Feb 5, 2026
Always seems to be rushed.
Feb 2, 2026
My questions and concerns were answered. Very professional.
Feb 2, 2026
In addition, Dr. Brenner's recommendations and prescriptions continue to be very effective.
Jan 28, 2026
Dr. Brenner spent more time than usual going over things. I felt heard.
Jan 27, 2026
Dr. Brenner has been our doctor for about 30 years. Hope he stays a lotlonger.
Jan 22, 2026
He is connected to so many doctors at Trinity and knows which one best to refer me to when needed
Jan 20, 2026
listened to all my concerns and considered them carefully
Jan 14, 2026
Dr. Karl Brenner has been my doctor for several years and I highly recommend him
Jan 13, 2026
Dr. Brenner was not easy to talk with, sometimes I felt like he was having a conversation with himself. I don't think he completely heard me with what I was experiencing.
Jan 12, 2026
Dr. Brenner is great! He always gives me the best suggestions in maintaining my health and especially my diabetes.
Jan 12, 2026
He was 30 minutes late after my appointment time before trying to connect with me
Jan 6, 2026
I liked Doctor Brenner and the staff. They were all great! I'm feeling better already. Thank you, Doctor Brenner!
Jan 6, 2026
The only. Problem was they the office had me scheduled but I was scheduled as Video and filled all the paperwork on line but when it came time to video they didn’t know where I was. They called and eventually Dr Brenner called me on phone and he acted very professional and ordered scripts I needed. He was patient even though I know he had to work me in. I felt sorry for him. He made it work.
Dec 23, 2025
Easy to talk with. Understands my issues.
Dec 19, 2025
Long term OCP for me.
We organized the team to take care of various needs for my diabetic type 2Z state which included a pharmacist an ophthalmologist of wound care, doctor and a dermatologist. We share data in milestones to improve my care. Modified medicines as recommended by the farm D Reem in movement toward controlled care. I was blessed to have this team work with me.
Dec 16, 2025
All good from check in process, to nurse who talked to me first, to session with Doctor, and finally with check out.
Dec 16, 2025
Familiarity with him staff is comforting.,His nurse is an ally. And of course my pharm D contributes to well being. And sense of team care.
Dec 8, 2025
He is an excellent doctor.
Dec 8, 2025
very helpful
Dec 4, 2025
Came in to discuss symptoms related to perimenopause and was quickly dismissed. He rarely looked up from his computer, and only spe about 10 min semi listening to me and when I mentioned wanting options to help with unexplained weight gain he acted like he never heard me and said “ok well I have a virtual visit to get to” and basically dismissed me. He also said he was putting in a referral to gyno and upon looking at the referral he never listed the Dr name he was referring me to so I had to research that myself to get to the right person.
Nov 20, 2025
Dr. Brenner listened very attentively.
Nov 19, 2025
Very cool doctor.
Nov 18, 2025
Considerate caring physician
Nov 18, 2025
Keep up the GREAT WORK!!!
Nov 17, 2025
He was concerned with my new symptoms, and ordered appropriate testing and even the CT was ordered stat to get it done in a timely manner
Nov 6, 2025
Dr. Brenner demonstrates exceptional clinical experience and judgment. His comprehensive review of all systems is consistently thorough, and the clear, confident guidance he provides based on his analysis highlights his significant expertise. In summary, Dr. Brenner provides outstanding, well-informed clinical direction.
Oct 30, 2025
I think Dr. Brenner is an EXCELLENT doctor. I'm glad he's my physician!
Oct 28, 2025
Always ready to help with the best solution that work for my condition
Oct 27, 2025
im thankful that dr. brenner is my physician:)
Oct 23, 2025
He's overall good but there a couple visits where his offerings sound alarmist - a complete change in a recent visit prior or even after the visit.
Oct 16, 2025
He treated me in a respectful manner and explained my condition and test results.
Oct 14, 2025
Dr Brenner has my confidence and trust. He and his staff provide 10 out of 10 health care.
Greg Garwood