Dr. Katherine Ann Thyssen, DO
Internal Medicine
10085 Double R Blvd, Suite 220
Reno, NV 89521 Directions
4.9 out of 5
2,122 verified ratings
2,122 Ratings, 1,117 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.
Feb 22, 2026
Great doctor!
Feb 22, 2026
Dr. Thyssen is the best primary care doctor. She always takes time to listen to me and always has solutions to my needs. I loved the medical student who was with her on my last visit. I'm sorry I don't remember her name.
Feb 20, 2026
Dr. Thyssen is a wonderful physician & Renown is lucky to have her. They need 100 more like her!
Feb 19, 2026
As always, Dr. Thyssen and the staff were kind, helpful, and ensured I got the treatment I needed.
Feb 17, 2026
Everything went perfectly.
Feb 13, 2026
Dr. Thyssen is the best Doctor in Nevada!!! She listens carefully and cares deeply for her patients. She is a brilliant Doctor, especially with us old folks ( her specialty) I feel so fortunate that she is my Physician!
Feb 13, 2026
Dr Thyssen is the best!
Feb 13, 2026
Dr Thyssen is the best!
Feb 13, 2026
Dr Thyssen is the bomb!
Feb 13, 2026
I am very happy with Dr Thyssen.
Feb 13, 2026
Dr Thyssen is very knowledgeable and spends the time to go over any issues and especially the labs and what they mean. So happy to have her in my Renown family.
Feb 12, 2026
I never feel rushed. Dr. Thyssen is very thorough.
Feb 9, 2026
I have been very grateful for the kindness and care and attention that I receive from the doctor and everyone at this facility.
Feb 7, 2026
Very good!
Feb 7, 2026
Dr. Thyssen is one of the best physicians I've ever had. She is thorough and attentive.
Feb 7, 2026
My doctor is very kind and helpful. It is always good to talk with her about my health issues.
Feb 7, 2026
Dr Thyssen always listens, knows your history, medications and interactions extremely supportive and helpful
Feb 6, 2026
I trust my doctor and appreciate the clinic staff
Feb 6, 2026
Dr Thyssen is very intelligent and through. She listens and explains, easy to talk to. Jason at front desk is a very helpful front check in person. Very friendly, professional and helpful. Wonderful team players
Feb 5, 2026
Dr. Thyssen is wonderful. She really seems to care.
Feb 5, 2026
Dr Thyssen is always up-to-date on my medical conditions. She usually offers choices, if appropriate, and discusses alternatives with me. She listens to my concerns and complaints with understanding.
Jan 27, 2026
Actually, I don't want to tell you your two options, but I wanted to say that this is my first appointment with my new doctor, Dr. Tyson. So we were collecting a lot of information. She had some background on me, but there were still some other physicians that she wanted to get my records. And so that's why she just got a three on those two questions. But she's very thorough. She's very pleasant. And I'm very, very happy to be a new patient of hers. So thank you.
Jan 24, 2026
I am in very good hands
Jan 24, 2026
Good doctor. Knows my history and treats me well
Jan 23, 2026
Dr. Thyssen is absolutely the best "doc" there is for us recycled teenagers. I have referred more than 10 other older adults to her care!!
Jan 21, 2026
Dr Thyssen is the best Dr I have ever had she listens to me and takes time to
address my issues
Jan 21, 2026
Dr Thyssen and staff are amazing. She is a major reason for staying with Senior Care Plus.
Jan 21, 2026
Dr. Thyssen is very compassionate and always takes excellent care of me.
Jan 21, 2026
Dr thyssen listens and explains well
Jan 18, 2026
It is always good.
Jan 17, 2026
You'll Notice That I Answered "YES! DEFINITELY" On
All The Questions Asked. Please Don't Take This
Lightly! I'm A 78 Year Old Male And Had Many MANY
Dotors/Specilest Over Those Years!
Doctor Thyssen Is A Doctor That I Should Have Had Since My Birth. Here's My List Of Her Performancer:
1. Loves What She Does In The Medical Field.
2. She Is Very Astute In Her Medical Field.
3.She Is Exceptionally Intelligent, Perceptive, And Insightful.
4. (And What Many Doctors Need To Work On!)
She Is Friendly (Seriously!)
5. She Never Rushes Your Visit, But, Is Very Efficient With My Time & Her Time.
Looks Like I Still Have 7,381 More Words I Can Use!
BUT! In My Comments Above You Should Easeily
Get The Picture.
Dr. Kathren Thyssen Is One Of Your Most Valuable
Resources, Please Never Forget This!
Writen With My Upmost Respect & Thoughtful, Warm, And My Awareness Of Her Support Of My Medical Goals/Requirements.
Jan 15, 2026
I am always impressed with the care this facility provides.
Jan 15, 2026
Dr Thyssen is the best doctor I
Have interacted with in my 73 years. She explains everything in detail.
Jan 14, 2026
Dr Thysson is a great PCP. Listens, explains things clearly. Extremely personable. Best PCP I have ever had
Jan 12, 2026
Excellent! Dr. Thyssen and Care assistant Maria where respectful kind thorough overall I’m so thankful that they care for me. Dr. Thyssen is an outstanding kind knowledgeable doctor I leave the office feeling so grateful!
Jan 12, 2026
This location is very clean comfortable.
Jan 11, 2026
I feel that a facility dedicated to seniors is an ideal situation. I truly appreciate the quality of care I’ve received since Dr. Thyssen has been my primary care physician.
Jan 11, 2026
Because of the professionalism in this location, I actually enjoy going to see my doctor there!
Jan 10, 2026
Dr. Thyssen is wonderful. She is so knowledgeable and takes time to listen
Jan 10, 2026
Outstanding. Even tho I was a bit late due to ice and snow, the doctor still saw me. For which I am very greatful.
Jan 10, 2026
I'm completely happy with renown services especially my primary doctor Katherine Thyssen and her assistant. They are very informative and very thorough.
Emmanuel Parcasio
Jan 10, 2026
Excellent communicator
Jan 9, 2026
Best doctor I have had in my lifetime. Dr Thyssen definitely knows geriatric medicine.
Jan 7, 2026
fantastic doctor -- professional and caring -- aware of my medical situation, offers great advice and has always taken very good care of me during all the many years I have been her patient
Jan 7, 2026
Dr Thyssen is an excellent doctor because she discusses your test results
Jan 2, 2026
Dr thyssen wonderful listener
With good advice !
Jan 2, 2026
Having blood testing available at Del Monte was very helpful and allowed one appointment for visit and blood work..
Thank you
Jan 2, 2026
Dr Thyssen is the best!
Jan 2, 2026
Dr. Catherine Thyssen is the best doctor ever.
Jan 2, 2026
This is one of the best drs offices I have been to. Very kind and caring. I have to say many of the drs I've seen at renown have been good but Katherine thyssen is the best