Several years I had an abdominal vein tear needing emergency surgery. I have also had several instances of clotting. Dr Penner is my internist and has followed up with me ever since, closely monitoring my blood clotting levels.
I so appreciate his approach - always calm and conservative. I trust him implicitly and hate to think he might retire one day.
Dennis Penner, MD
Los Gatos, CA 95032 Get Directions

Reviews from
Annual Membership Fee
My Philosophy and Approach to Wellness...
Dr. Penner's Credentials
University of Michigan Hospitals
Ann Arbor, MI
Internal Medicine 1975-1978
University of Michigan Hospitals
Ann Arbor, MI
Internal Medicine 1974-1975
University of Michigan Medical School
Ann Arbor, MI
Doctorate of Medicine 1974
Wayne State University
Detroit, MI
1970
American Board of Internal Medicine
El Camino Hospital-Los Gatos
Good Samaritan Hospital
- Board of Trustees 1998-2002
- Board Vice Chairman 1999-2000
- Chairman, Division of Internal Medicine 1994-1996
American Society of Internal Medicine
California Medical Association
Santa Clara County Medical Society
Testimonials from patients of Dr. Penner
I joined MDVIP to have Dr. Dennis Penner become my new GP after my previous GP closed his practice. The physical exam was the most comprehensive I have ever had, and included my first bone density test, which uncovered osteoporosis that had resulted in a dangerously thin femoral neck in my right hip. My osteoporosis is most likely due to low testosterone, a side effect of medication I have… See more
Dr. Penner is always there for me, 24/7. What ever needs to be done, he will take care of it. When my wife was alive, he always made sure that she had the best treatment for her condition. She had Parkinsons. Great Doctor.
I have been going to Dr. Penner for many year even before he joined MDVIP. Dr. Penner never rushes a patient. Dr. Penner makes one feel at ease. He is a great doctor. Joining MDVIP has not changed him at all as he always was a kind doctor never rushing a patient. He makes you feel at ease as if he is a friend, Good job Dr. Penner.
Dennis, you have been the Rock of our medical journey and a fine friend in our times of need! Your insights and care have carried us both in confidence of your medical and personal direction. Thank you for just being there for us each time a critical need arose! Rose would not have survived without your charting the way for her care.
Dr. Penner is always responsive to calls and when a visit is needed. And his office is always attentive to our requests.
D elightful
R espected
P atient
E xceptional
N ice
N oteworthy
E ncouraging
R emarkable
Put them all together and you have the BEST doctor celebrating National Doctors Day!
As I have told you, I just start to feel better knowing Im going to see you. I have followed you from San Jose Medical, to your private practice and now to… See more
After Dr. Penner joined MDVIP we went to another doctor for 4 years because we didn't feel we could afford the quarterly premiums for MDVIP. So for four years, we didn't get good medical care and did not trust or respect our new doctor. We relooked at our finances and figured we needed peace of mind. We were thrilled when Dr. Penner accepted us back into his practice. Now we know we… See more
Dr. Penner has been a wonderful physician. He educates without lecturing, directs without ordering and informs without patronizing. He has always been sensitive to my own concerns and questions.
His nurse/assistant, Natasha is also fantastic.
Randy L.
Always.... Responsive, Caring, Expert Diagnostician, Interested in me.
Excellent office staff. He and Natasha are the total 5 Star package.