Book an Appointment
Qualifications and Experience
Dr. Diane Greiner is a diligent and experienced cardiologist serving the communities of Comfort and San Antonio, TX. Dr. Greiner earned her medical degree from Duke University. She continued her training by completing her fellowship in cardiology at the Wilford Hall Medical Center. She also earned her bachelor’s degree from the University of Notre Dame.
Dr. Greiner is certified in cardiovascular disease by the American Board of Internal Medicine. She is a member of the American College of Cardiology.
Dr. Greiner is sensitive to the uniqueness of each patient's situation and adapts her consultations and treatment options appropriately to accommodate individual needs and concerns.
Verified Patient Reviews
Excellent. Very welcoming, attentive, great listener. Great doctor. Great staff.
Her office runs like a very well oiled machine -- punctual!
Office staff was great. Dr. Greiner answered all of my questions and made very good recommendations.
Very professional and a good starting point
It was AWFUL...internet was down, I had to plead just to have a word...I have a PHD in Nursing...encounter many health care professionals...will insist they avoid this place at all costs! I have never been treated so callously in my whole life...absolute nightmare!
Very friendly and business-like.
Dr. Greiner is a kind, caring, and dedicated cardiologist. She takes the time to listen to a patient's concerns.
Very efficient office. I was expecting a long wait and I did not even have time to finish the paperwork before they called my name (after getting there over 15 mins early). Very professional staff. Dr. Greiner was very kind and professional.
Pleasant to talk to.
I love this office. All my appointments have started at the appointed time yet I never felt rushed. Also love the ease of booking online.
The staff was very polite, friendly and helpful.
Very pleasant experience!
I really liked the office staff,everyone was pretty friendly. Dr. Greiner was very sweet and took the time to talk to me. I really enjoyed my visit today :)
Dr Greiner was professional, attentive and proactive for cardiac health. The office personnel were gracious and helpful.
Second time I've been there. My first Doctor was awesome, but unfortunately, she retired. Second time comming in was not greeted lady ask for name and last name. She did apologies for me having to fill out the form again. Dr. Was good 10 min or less. My only only problem was the lady at the front desk . The lady who was makeing my next appointment was talkative, nice and friendly as I was leaving the lady who checked me in tells her man you friendly and talkative to everyone. That annoyed me. My issue is the young girl at the front desk.
She is knowledgeable and professional.
She is very nice, she has an amazing bedside manner. Dr Greiner spent a long time just talking to me and made me feel comfortable. I would highly recommend her.
Dr. Greiner is fantastic!! She took time to thoroughly evaluate. She answered all of my questions and addressed any concerns.
She had a great bedside manner and was very professional.
Everyone I met in Dr. Greiner's office was professional and very nice. If you are looking for a Cardiologist in the area I highly recommend this office.
Office staff was very helpful, appointment was prompt, Dr. Greiner was very knowledgeable and caring with answering all my concerns about me condition.
Dr. Greiner is a caring, thorough doctor. Her calm personality really puts you at ease. She takes the time to listen. I trust her so much that I sent my 20 year old son to her for his cardiac care as well.
She is an amazing doctor who really takes the time to listen. She is very thorough and most of all, she is very caring. I trust her so much that now I have brought my son to her for care.