Dr. Joan G. Thomas, MD

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.

Sep 2, 2025

Eva and Dr. Joan are the best! So kind and knowledgeable about Healthcare, I always recommend them?

Aug 28, 2025

Thanks to Dr. Joan Thomas and the staff at Renown Los Altos.

Aug 28, 2025

Joan was on top of it ! Already knew the medical issues before I could even ask had answers right away!!

Aug 28, 2025

Dr Thomas knows my medical history. She is professional and friendly. I feel like I’m in good hands.

Aug 27, 2025

No waiting, everybody very nice and professional, excellent doctor

Aug 23, 2025

Eva is Dr. Thomas' intake nurse. She is always very friendly and treats me with great care and respect. Dr. Thomas always takes time to review all of my previous history and tests to make sure I understand it all. It has been a very good experience.

Aug 23, 2025

Dr. Thomas genuinely cares and puts her medical expertise to work providing the best care for me.

Aug 16, 2025

Went well

Aug 16, 2025

My overall experience was very good and my current provider is very easy to discuss all of my medical issues.

Aug 7, 2025

I have found it challenging to establish a good patient–doctor relationship with Dr. Joan G. Thomas. In my experience, she often does not actively listen, making it difficult to have a productive conversation about my mother’s care. When supervisors or senior staff from Renown are present, she appears friendly and approachable (as in our last appointment). However, when alone in the exam room, her manner can feel authoritarian, creating an atmosphere of intimidation and reducing our confidence in the care experience. I have attempted to request a change of doctor within the Los Altos Renown Clinic. However, other physicians have expressed reluctance to accept my mother as a patient, often stating that the visit can be handled “for today only” and that future appointments should return to Dr. Thomas as the primary doctor. This has made it very difficult to transition her care, despite my preference to remain at this location for convenience. In my opinion, Dr. Thomas would benefit from additional training in patient communication and relationship-building to foster a more supportive, collaborative, and trust-based environment.

Aug 4, 2025

Great Dr. , she game understand the test results. Appreciate that !

Aug 1, 2025

Nice Dr.

Jul 25, 2025

Doctor very thorough and listened to my concerns.

Jul 25, 2025

The nurse and the doctor were professional and efficient. Dr Thomas diagnosed my problem quickly.

Jul 20, 2025

Everyone was very nice and helpful too

Jul 17, 2025

I am happy with the care I receive from Dr Thomas

Jul 17, 2025

Dr. Thomas is very thorough, she goes above and beyond when trying to figure what is causing the issues. Her medical assistant is amazing in making you feel comfortable

Jul 8, 2025

Very good

Jun 21, 2025

All good

May 15, 2025

Excellent

Mar 18, 2025

Quick response Dr Thomas listened to my questions and answered them so I could understand. Her assistant is a Gem always kind and helpful. A pleasure to deal with.

Jan 2, 2025

Dr. Thomas and her Medical Assistant were professionl, caring, and very kind.

Jan 2, 2025

I trust Dr. Joan Thomas with my health needs.

Dec 31, 2024

Dr. Joan and her staff are great! My relationship with Dr. Joan has grown and we are working so well together on my health choices.

Dec 26, 2024

The diagnosis of my condition.

Dec 21, 2024

Depth of medical knowledge, thoughtful insights, helpful information, and great action plans!

Dec 20, 2024

Very helpful at seeing me to get my [ ] after Dr [ ] left.

Dec 19, 2024

Good attention

Dec 12, 2024

Above and beyond service of care

Dec 10, 2024

I was able to see another doctor other than my current doctor do to schedule.

Dec 9, 2024

She always studies my chart and then we talk and she answers my questions. I’m very impressed with her knowledge. I feel comfortable with her handling my health. I’m 82 and healthy thanks to Dr Thomas.

Nov 28, 2024

Dr. Thomas is very thorough. She is great with follow up, and has a watchful eye on my future appointments with other providers.

Nov 21, 2024

Always took her time with me and always explain everything what I need to do to help myself, always made me feel as though I matter.

Nov 21, 2024

Yes she is very caring, considerate, & very thorough she cares for me very much thank you Dr Thomas & assistant Eva is great too!

Nov 20, 2024

She was very good and we both like her a lot. She knew what I had The minute she saw it.

Nov 17, 2024

I am so glad I found Joan Thomas. She listens and understands. Finally, a doctor who cares!

Nov 16, 2024

Her attention to detail, her information given after my questions were asked.

Nov 12, 2024

her bedside manner

Nov 11, 2024

I really appreciate having her as my Provider.

Nov 9, 2024

She goes through everything with you!

Nov 7, 2024

Dr. Thomas is an exceptional doctor. She is thorough, knowledgeable, friendly and caring.

Nov 4, 2024

De Joan was very personable and caring

Oct 25, 2024

She is a good provider, but sometimes shortening a visit

Oct 22, 2024

Most of all…realizing that my care can be complicated by my medical providers not understanding my condition. Dr. Joan Thomas does understand my condition. She keenly covers knowing the complete medical tests updates of all necessary specialty doctors I receive care from. I’m very grateful.

Oct 19, 2024

Dr Thomas is a great doctor. I would recommend her to anyone.

Oct 17, 2024

I was treated with care and love. I felt I was with family.that cared about me.

Oct 16, 2024

Dr Thomas medical assistant was very kind.

Oct 15, 2024

Ease of getting tests and follow up.

Oct 11, 2024

Dr Thomas has been very interested in my health & has been great at explaining everything to me ! She is a very good Doctor!

Oct 11, 2024

I feel confident in my health with Joan Thomas as my doctor. She is knowledgeable and prescribes appropriate medicines and treatment. She and her assistant, Eva, are friendly and efficient.