Dr. Diane Z. Greiner, MD

Cardiovascular Disease

(3 reviews)
Accepting new patients 16 years of experience Offers telehealth Easy scheduling Low wait times


Dr. Diane Z. Greiner, MD is an Internist (Cardiologist) in San Antonio, TX. She specializes in Cardiovascular Disease, has 16 years of experience, and is board certified. She graduated from Duke University School Of Medicine.

Dr. Greiner works at 502 Madison Oak Dr. She frequently treats conditions like Hypertensive Heart Disease, Heart Disease along with other conditions at varying frequencies. Dr. Greiner also conducts Cardiac Myocardial Perfusion Imaging. She is accepting new...

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User Ratings (of at least 4.0)

Accepting New Patients

Insurance Accepted

Conditions Treated and Procedures Performed

Online Scheduling

Headshot Available

Experience & Treatment Frequency

Search for conditions or procedures.

Carotid Artery Disease
Heart Disease
Hypertensive Heart Disease
Carotid Artery Disease
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Treatment Frequency

Very High
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Heart Disease
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Treatment Frequency

Very High
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Hypertensive Heart Disease
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Treatment Frequency

Very High
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Conditions and Procedures FAQ

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Ratings & Reviews

Average provider rating


Based on 3 reviews

Time with patient

Accuracy of diagnosis

Listening skills

Clear explanations

Trust in decision making

Post visit follow-up

Office & Staff Evaluation

Office appearance

out of 5

Ease of scheduling

out of 5

Friendly staff

out of 5

Billing matters

out of 5

Average wait time

6 to 10 minutes

Group 24

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How was your appointment with Dr. Diane Z. Greiner, MD?

Patient Reviews

3 reviews

5 star
4 star
3 star
2 star
1 star
Sep 19, 2017
Dr. Diane Greiner can be seen in Comfort, TX

I have been seeing Dr. Greiner since December 2011. She performed a angiocath which luckily, proved negative, & has been taking care of me since. She is calm, confident, reassuring & timely. When I have a question or concern, I can post a...

Gloria A.

Oct 17, 2017
Love her

Her office staff is efficient and friendly, no long waits for appointments and she never rushes through your visit. Great doctor!

Marsha M.

Oct 17, 2017
Great cardiovascular care, explained in layman's terms

Excellent. I was sent to Dr. Greiner from my primary physician for AFib. Dr. Greiner has a very "calming" demeanor, and is very thorough. I feel totally confident I am under great cardiovascular care, and have a clear understanding of my heart...

Woody E.

About Dr. Diane Z. Greiner, MD


  • Cardiovascular Disease

Years of Experience

16 years of experience

Languages Spoken

  • English



NPI Number


Education & Certifications

Medical Education

  • Duke University School Of Medicine


  • San Antonio Unif Ser Health Edu

Board Certifications

  • Cardiovascular Disease


502 Madison Oak Dr,

San Antonio, TX 78258


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