Dr. Katherine Ann Thyssen, DO
Internal Medicine
10085 Double R Blvd, Suite 220
Reno, NV 89521 Directions
4.9 out of 5
2,077 verified ratings
2,077 Ratings, 1,096 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.
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
Jan 2, 2026
Dr Thyssen is very personable and knowledgeable.
Dec 31, 2025
Dr Thyssen is in the perfect setting. She talks to me as a human, not an old lady. And her compassion is deep. She has helped me get through this very difficult cancer journey. She’s the best.
Dec 31, 2025
Dr. Thyssen is the best care provider I ever encountered.
Dec 31, 2025
I adore Dr Thyssen !! She treats the entire person … not just a symptom.
Dec 31, 2025
Extremely helpful to have blood draw available in clinic.
Dec 28, 2025
Extremely sad that this clinic no longer accepts my insurance and I must find another provider after many, many years. Tough to do for an 89 year old woman.
Dec 28, 2025
Dr Thyssen is the best MD I have ever had
Dec 26, 2025
Check in staff were very friendly and wait for the dr. was minimal. Dr. was patient and thorough. Blood pressure problem was resolved. I am very happy with the medication change and the positive results.
The problem with blood pressure was resolved.
Dec 26, 2025
I HAVE THE UTMOST CONFIDENCE IN DOCTOR THYSSEN...SHE IS A VERY CARING DOCTOR.
Dec 26, 2025
I was grateful for ability to have immediate consultation about how to deal with ongoing issue with another provider and at the same time get a better understanding of the medical condition I was dealing with. Always a good experience with my designated doctor.
Dec 25, 2025
Always a good experience.
Dec 25, 2025
Dr Thyssen is a truly exceptional geriatric doctor. Her detailed explanations and clarifications, combined with her prompt responses to my messages is very remarkable. I am grateful to have Dr Thyssen as my Doctor.
Dec 24, 2025
All good
Dec 23, 2025
Katherine Thyssen has my utmost appreciation. She really looks after my well-being. I have complete confidence in her and I'm so grateful to have found her. Bye-bye.
Dec 20, 2025
I love Dr Thyssen. She knows my medical history and is on top of my medical needs. She has served both my husband and I extremely well. Love her.
Dec 19, 2025
The entire stafrf at this facility is outstanding in my opinion. Dr Thysen listened to my concerns and acted to care for them right away.
Dec 19, 2025
My wife and I are blessed with the care we receive from Renown. We've had occasion to use multiple service and would rate all 10+
Dec 19, 2025
Dr. Thyssen is one of the best doctors I have ever had in my life. She is very knowledgeable and she knows what she's doing, and that side manner is perfect. She's all around a very good doctor. My family and I love her very, very much. She is very good with patience, very respectful, and understanding. Thank you.
Dec 19, 2025
Katherine Thyssen is the best Dr. I've ever had by far in the last 73 years.
Dec 15, 2025
My dr Thyssen
Very attentive to my needs!
Dec 13, 2025
Dr Thyssen is a great doctor who always listens to my need. I am very happy with her, she always try's to meet my needs. Thank you