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. Diane Z. Greiner, MD works at 502 Madison Oak Dr. She is accepting new patients and accepts Aetna, Anthem, Blue Cross Blue Shield, Cigna, Humana, and other major insurance plans. Please call ahead to schedule an appointment with Dr. Diane Z. Greiner, MD and...


Treatment Frequency

Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.

Very High Frequency
High Frequency
Normal Frequency
May Perform

Check your insurance

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

Leave a review

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


Frequently Asked Questions

Are you Dr. Diane Z. Greiner, MD?

Login or create a Doctor.com account to manage your FindCare profile.

Claim your free profile