Dr. Diana L Westerfield, DO
Cardiology
10 Hospital Drive, Suite 100
Saint Peters, MO 63376 Directions
4.8 out of 5
269 verified ratings
269 Ratings, 79 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.
Jun 25, 2026
What else would you like to say about your experience?
Dr. Westerfield is the FIRST BJC doctor who came in prepared and had already studied my history. She was very friendly and actually interested in having me for a patient. No student/professor appointment. I am too old to be someone's class assignment. She is a true physician!
Jun 17, 2026
What else would you like to say about your experience?
The doctor talked to me in a way that I could understand and it gave me a lot of confidence in that she will care for me and care for my health position as it is and will help me if I have a problem.
Jun 16, 2026
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You are very lucky to have such a great team of employees
Jun 15, 2026
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It was great, keep up the good job
Jun 11, 2026
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I am very happy to be back with Dr. Westerfield! She is an incredible physician and easy to talk to.
Jun 1, 2026
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Dr. Westerfield is such a joy. My blood pressure was up at the beginning of my visit with her, and after 5-10 minutes of chatting with her, she retook it, and I was back in the normal range. She makes me feel such at ease. I would definitely recommend her to someone who needs to see a Cardiologist.
May 30, 2026
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This was an annual visit, efficient but time for questions and answers. Did nit feel hurried.
May 30, 2026
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The staff was very welcoming and friendly. Dr. Westergill is absolutely the best. She's the best doctor I think I have. It was easy to get in. She spent plenty of time with me and I enjoyed our visit.
May 15, 2026
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Doctor is very good. She listens. She's very responsible with the care of her patients. And really enjoyed meeting her and dealing with her for my appointments. Would highly recommend.
May 15, 2026
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You did very good.
May 15, 2026
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Doctor Westerfield is the best without question
May 13, 2026
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Dr Westerfield and staff are awesome!
May 12, 2026
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Dr Westerfield always takes time to listen to your issues. She likes to stay on top of any potential problems. I like that she obviously checks your file before she enters the room and comments on any issues you have experienced. I like her “bedside” manor and the way she puts you at ease.
May 11, 2026
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Dr Westerfield is always an enjoyable experience. She is through but never in a hurry.
May 11, 2026
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Dr Westfield is wonderful
She is outgoing and explained my issues in a way that u understood
May 9, 2026
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The staff is always pleasant and on ball. The doctor is pleasant and very thorough.
May 8, 2026
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Dr. Westerfield is probably the best doctor I have ever had and I have had some of the best. Not only is she so very knowledgeable, she is the most compassionate and when she walks in the room, she has read your file and KNOWS you and your history and your needs. She is kind and you are the focus of her attention. Her staff is also very professional and efficient. No complaints from me. I have recommended her and the office to many people.
May 8, 2026
What else would you like to say about your experience?
Dr. Westerfield is awesome.
May 5, 2026
What else would you like to say about your experience?
Doctor westerfield always listens and cares About my health
Apr 28, 2026
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Everything went very well and staff and doctor are great.
Apr 26, 2026
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Dr. Westerfield is so great, I felt she truly cared about my issue.
I will recommend her to all my friends. It was a great experience..
Apr 24, 2026
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Dr. Westerfield and her staff are the most caring and knowledgeable doctors we know. If it weren't for them I probably wouldn't be here now.
Apr 23, 2026
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The provider was very professional. She was thorough in her questions to understand my symptoms. She studied my medical records before my appointment and made notes. She listened carefully to my explanation of events and past medical history. She was thoughtful, and I was highly motivated to follow the course of treatment she prescribed.
Apr 16, 2026
What else would you like to say about your experience?
Dr. Westerfield explains things in a way that keeps you calm. Sometimes a person's imagination gets carried away, but she brings you back to earth with her kind and caring manner. I highly recommend her and BJC.
Apr 16, 2026
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Dr Westerfield is a wonderful person n a great dr. I am very happy to have her as my cardiologist.
Apr 15, 2026
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Dr. Westerfield is excellent and the pacemaker nurse eas excellent and a wealth of information. They are the best.
Apr 15, 2026
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Ever since I have been seeing Dr. Westerfield it’s been one of the best decisions I made in my life. She is a terrific and wonderful doctor.
Apr 15, 2026
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I have been seeing Dr. Westerfield since March 2019. When I was first diagnosed with CHF in the hospital I thought it was the end for me. Then I met Dr. Westerfield and she proved to me I was wrong and now I am doing very well. She was very hopeful and she continues to make me feel hopeful. She’s a joy to have as my doctor.
Apr 14, 2026
What else would you like to say about your experience?
Everyone was very helpful and my appointment was kept on time
Dr. Westerfield is an outstanding doctor. She answers your questions very promptly and in language that one can understand.
Apr 13, 2026
What else would you like to say about your experience?
Excellent staff.
Apr 11, 2026
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The best doctor in the state of Missouri. I love her. Thank you.
Apr 10, 2026
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Great. Everything was great.
Apr 8, 2026
What else would you like to say about your experience?
Dr Westerfield was awesome!
Apr 6, 2026
What else would you like to say about your experience?
Always a positive experience. Staff always helpful and friendly
Apr 6, 2026
What else would you like to say about your experience?
Everybody there, including Dr. Westerfield Our A1
Apr 3, 2026
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Dr. Westerfield is wonderful! Very personable, makes the patient feel comfortable. She is the only doctor Mom doesn’t complain about going to! Mom feels like she’s “visible” with the attention she gets from Dr. Westerfield. And, Diane can be a very snappy dresser, very professional! She’s an asset to BJC!
Mar 20, 2026
What else would you like to say about your experience?
Everything went exceptionally well. Staff and Doctor are very knowledgeable and friendly.
Mar 18, 2026
What else would you like to say about your experience?
I love Dr Westerfield. She makes you feel listened too and she is very caring.
Mar 18, 2026
What else would you like to say about your experience?
Dr. Westerfield is fantastic! She is so down to earth in explaining things and has familiarized herself with your history before entering the room. Best Cardiologist I have ever had!!!
Mar 17, 2026
What else would you like to say about your experience?
Always a good experience with Dr westerfield
Mar 16, 2026
What else would you like to say about your experience?
As always the treatment was excellent
Mar 15, 2026
What else would you like to say about your experience?
Great care as always
Mar 14, 2026
What else would you like to say about your experience?
You could get more doctors like Dr. Westerfield. She's just the best.
Mar 13, 2026
What else would you like to say about your experience?
Doctor is kind and concerned. explains test results. very happy with her
Mar 13, 2026
What else would you like to say about your experience?
Dr Westerfield is the best! She takes her time while examining my husband and answers all my many questions!!
Mar 12, 2026
What else would you like to say about your experience?
On this day, I received exceptional care. I was never made to feel rushed or unheard.
Mar 12, 2026
What else would you like to say about your experience?
Dr is the best
Mar 12, 2026
What else would you like to say about your experience?
They were very kind and helpful.
Oct 14, 2025
Was there anything that you feel was outstanding?
Dr westerfield was very good in taking care of my needs of medical needs. Thank you
What could have been done to improve your experience?
Nothing comes to mind.
Oct 7, 2025
Was there anything that you feel was outstanding?
All good