Dr. Katherine Ann Thyssen, DO
Internal Medicine
10085 Double R Blvd, Suite 220
Reno, NV 89521 Directions
4.9 out of 5
2,634 verified ratings
2,634 Ratings, 1,351 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.
Nov 7, 2026
I have been a patient of Dr. Thyssen for many years and she is the best! She listens and answers all of your questions!
Nov 7, 2026
Great service. Did not wait long.
All my questions were answered.
Hope the transition goes smoothly!
Thank you!
Nov 6, 2026
We trust Katherine Thyssen completely. She always has your best interest in your health.
Nov 5, 2026
I like my new dr. She was very helpful and listened to me. I like my change.
Oct 31, 2026
Office is always efficient and a pleasant experience
Oct 30, 2026
Good dr
Oct 29, 2026
Dr. Thyssen is one of the best doctors I have ever had.
Oct 28, 2026
Dr. Thyssen is the best pcp I've ever hsd. Professional, knowledgeable, thorough, caring.
Oct 28, 2026
Dr Thyssen was amazing. She is the most thorough doctor I’ve ever been to totally impressed at the care.
Very grateful she told me things I did not know about my thyroid disease and taking medication before I have my test nobody ever made that clear to me. I am so grateful for her.?
Oct 26, 2026
Wonderful, as always.
Oct 26, 2026
We were extremely happy with the facility and with Dr. Thyssen. It is wonderful to be treated with such a high degree of caring and professionalism.
Oct 24, 2026
new Doc gave her time
Oct 22, 2026
Have been going to Dr Thyssen and she is truly the best doctor. She listens to your concerns and goes over lab report. I am so glad I can have her as my doctor
Oct 22, 2026
My primary care provider is new to me since had to change due to the Kaiser merger with Renown. I was very pleased with my first meeting with Dr. Katherine Thyssen as she ordered lab work and Cat Scan to further understand my background health issues.
Oct 20, 2026
I was extremely satisfied with my first visit with Dr. Thyssen. She answered all my questions and concerns, and time was not a problem.
Oct 19, 2026
Very nice and caring doctor.
Oct 17, 2026
Dr Thyssen and the entire team at this facility are great. I appreciate their assistance and the convenience of this location.
Oct 16, 2026
I’m very impressed with my new PCP Katherine Thyssen
Oct 16, 2026
Dr. Thyssen is the best, she listens intently and make sure that we understand what’s needed.
Oct 15, 2026
This week I visited my Primary for illness and a lab for blood draw
All the people were helpful and supportive.
At our Robb drive, Reno lab a sign in sheet has been replaced with a computer screen which creates a line that clogs up the check in process and requires us to stand for prolonged time, of which I am not able.
I believe this “improvement” slowed things down and created physical problems for me. The sweet older lady behind the desk came to my aid saving me pain and stress.
To get rid of the bottle neck have at least two check in computers which should not be necessary since I checked in on line.
Please consider some members are unable to stand long if at all.
Oct 15, 2026
I am so happy to be a patient of dr. Thyssen. She is excellent. Thank you
Oct 15, 2026
She is always right on top of it !
Oct 14, 2026
I would like to say my visit with Dr. Kate Thyssen as my new primary care physician with Renown, meeting Dr. Thyssen for the first time, I was very impressed with her, and I am very much looking forward to have her managing my healthcare as my New Primary care physician! I found nothing that I would’ve needed to change in our visit to make things any better. My first impression was a very favorable and I’m very happy with my choice. I felt right at home speaking with the doctor. She seemed to be very knowledgeable and compassionable person. I’m glad to be involved with her for my healthcare needs.
Oct 13, 2026
Always comfortable and professional.
Oct 11, 2026
Dr Thyssen is the best!
Oct 9, 2026
I am 81 years old and have visited many medical facilities. The Delmonte branch of Kaiser Permanente.(as well as Dr Thyssen at that branch) is the nicest most convenient most acceptable medical facility I have ever visited…
Oct 9, 2026
Dr. Thyseen is the best doctor I have ever had
Oct 8, 2026
I like the peacefulness of the Del Monte facility, and the fact that Dr. Thyssen is my Geriatric provider. Dr. Thyssen listens and refers me to areas needed. I can follow up on My Chart.
Oct 5, 2026
I have been totally impressed with my doctor and with renown and with all the amenities that have been offered through our insurance and all the professionalism. I could not be any happier and more pleased. Y'all are wonderful. Thank you.
Oct 5, 2026
Very pleased of all the people working there !
Oct 2, 2026
Dr Thyssen is a great doctor.
Oct 2, 2026
I have excellent rapport with my doctor and I don't want to leave her. So that's my feedback.
Oct 1, 2026
Thank you
Oct 1, 2026
Dr. Thyssen is a very caring and courteous physician who listens and tries to understand what we attempt to relay in lay terms then provides common sense replies to those concerns. Very happy to be included as one of her patients. Thanks.
Sep 30, 2026
The office is very nice, the staff is very nice and professional, and Dr Tyssen is the best! Can't say much more other than I am very happy to have found this location and doctor.
Sep 29, 2026
Always courteous courteous receptionist. Nice clean facility
Sep 28, 2026
Hi, I worked for Renown for 30 plus years. I've never had a doctor as honest and you know, Dr. Thyssen is incredibly great. I would follow her to the ends of the earth.
Sep 28, 2026
I would refer friends to Katherine thyssen but she is the only dr in there i know. I haven't seen any of the Kaiser drs
Sep 26, 2026
Always a. Excellent experience going to see Dr. THYSSEN and het assistant, Maria.
Sep 26, 2026
Overall excellent..thank you
Sep 25, 2026
Just dropped in to see what condition my condition was in. Doc T is doing one heck of a fine job staying ahead of weird old me and assorted various infirmary stuff
Sep 25, 2026
provider was very knowledgeable
Sep 23, 2026
I am currently very happy with the care provided by my Renown providers.
I feel that my primary care provider cares about my health and well-being.
Sep 23, 2026
Dr. Thyssen has been taking of me, my health, and issues as I age for some time and I find her to be terrific, she is caring and through in her care for me
Sep 22, 2026
Dr Thyssen is the best doctor I have ever had, and I'm 72 years old
Sep 20, 2026
Dr. Thyssen is very knowledgeable regarding my meds and conditions and made me feel very confident in her.
Sep 19, 2026
After being a patient with Dr Jennifer [ ] , for 35 years I thought it would be very hard to replace her. BUT I have found an exceptional doctor to move on with.
Doctor Katherine Thyssen. ..
She is exactly what I needed for my primary Doctor! So Thank You⭐️
Sep 18, 2026
First time seeing this Doctor, she was very knowledgeable, knew my medical history, and was very personable!
Sep 18, 2026
Established with dr thyssen. She was so attentitive and answered all my questions and concerns.
Sep 18, 2026
Great experience with my new
Provider in all aspects.