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 condition. She takes the time to explain things in layman's terms. Also, she, and her awesome staff are very punctual. Very impressive.

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

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 question via the patient portal & she answers my question by the next day. Her home office is in San Antonio but since I live in Kerrville, I am able to see her in her satellite office in Comfort. Her staff are efficient and courteous. She is perfect!