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Dr. Robert Zwiener, MD

Dr. Robert Zwiener, MD

Pediatric Gastroenterology*
40+ years of experience

Dr. Robert Zwiener, MD is a pediatric gastroenterologist in Austin, TX and has over 40 years of experience in the medical field. He graduated from University of Texas Health Sciences Center at San Antonio Long School of Medicine in 1983. He is affiliated with medical facilities such as Methodist Hospital and St. David's North Austin Medical Center. He is accepting new patients and telehealth appointments.

4.1 Star Rating
Based on 18 reviews 4.1 Star Rating (18 reviews)

Dell Childrens Medical Group

1301 Barbara Jordan Blvd Ste 401 Austin, TX 78723
Telehealth available
(512) 628-1810

At a Glance

  • Areas of Expertise
    Dr. Zwiener specializes in the areas of Pediatric Gastroenterology & Pediatrics. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America's 250 Best Hospitals Award™ • See hospitals
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Dr. Zwiener's Reviews

Likelihood to recommend Dr. Zwiener

4.1
18 ratings, 13 with a written review
5 star
67%
67%
4 star
11%
11%
3 star
0%
0%
2 star
6%
6%
1 star
17%
17%

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Dr. Zwiener is incredibly knowledgeable, resourceful, and compassionate. He demonstrates a deep concern for his patients and a thorough understanding of their parents’ worries.He is always available to answer our questions, whether it’s during the evening or on weekends. Last Thursday, despite it being the end of a long day with our appointment being the last one, Dr. Zwiener stayed for over an hour to thoroughly discuss our child’s complex condition and address all our concerns. He was extremely patient, even though the other staff had already left for the day. We were deeply moved by his dedication.As a mother, I believe the most valuable quality in a pediatrician is genuine care for the child, and Dr. Zwiener embodies this quality perfectly. We feel very fortunate to have found him.
What went well
  • I felt respected
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Sep 10, 2024
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Dr. Zweiner had an excellent bedside manner. Since then, we have only done telemedicine appointments. He has been professional, courteous, and on time. My child felt calm in his presence. Surprisingly, and apparently getting more rare, his office staff were also polite and courteous. His nurses are wonderful, too.
What went well
  • Office environment
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Difficult to schedule appointment
Helpful
Oct 27, 2020
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Our son has seen Dr. Zwiener for eight years. At a time when our son was diagnosed with Crohn's when he was eight, seeing two parents with a look of shock on their faces, Dr. Zwiener brought calmness and encouragement to us. We couldn't have asked for a better doctor. He has always thoroughly explained our son's situation, listened and accepted our input, and helped plan out what our son's best course of action for treatment was. His relationship with our son is amazing. He always has a great sense of humor with our son and always asks about his life and what he's up to. Our son is now 16, and we only have two more years to see Dr. Zwiener, and we will miss him. We couldn't possibly recommend a doctor more.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Stogels – Jun 04, 2020
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One of the best doctors in Austin. My son has a lot of medical issues making him a very complicated case. We see a lot of specialist and Dr. Zwiener has been one of the best Docs we've seen. He takes time, asks a lot of questions and is really passionate about understanding the patient. Although he focuses on GI he's very knowledgeable about other areas as well.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jan 24, 2020
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Extremely thorough and listens. Took the time to explain and didn’t dismiss symptoms or concerns. He is intense and serious but also warm and kind.
What went well
  • Office environment
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
  • Difficult to schedule appointment
Helpful
Shannon Pleasant – Aug 15, 2019
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Dr. Zwiener is amazing! He listens to everything I say, shares information to keep me not only informed but also educated on my son's condition. He's funny and compassionate, really connecting with his patients and their parents.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Austin, TX – Sep 06, 2018
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We saw Dr. Zweiner from the time my son was born 3 months premature until he was 3 years old. During this time, Dr. Zweiner repeatedly tried to ween my son off his reflux meds. He minimized my concerns and seemed to have little understanding of pediatric feeding issues. My son was refusing most foods and Dr. Zweiner sent in a nutritionist who talked to me about how to get my son eat more broccoli. The child was eating maybe 3-5 foods at the time. My son was under 3% on the growth chart and was
What went well
  • Office environment
What could be improved
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Didn't trust the provider's decisions
1 other person found this helpful
Helpful
Ljackson in Austin, TX – Aug 21, 2018
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We were trying to advocate for our son to get a feeding tube because we knew he likely had a syndrome and would continue to have difficulty feeding. Dr. Zwiener refused to acknowledge our son's difficulties, saying that his inability to eat enough or gain adequate weight was our fault for allowing him to cluster feed and upping the calories in his formula. When Dr. Zwiener saw my son for the first time he had microcephaly, was eating far less than he should, and had abnormal physical features. H
What went well
No results
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
4 others found this helpful
Helpful
Aug 14, 2018
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Dr. Zwiener is an excellent GI physician. My son has been his patient for 18 years. He is extremely knowledgeable, competent, and thorough. He has an excellent bedside manner. I would highly recommend him to anyone seeking a pediatric gastroenterologist.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Dana Werner in Austin, TX – Jan 26, 2018
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Great doctor with wonderful bedside manner.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Salado, TX – Aug 25, 2017
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Dr Zwiener is an amazing consciousness doctor who is truly invested in helping your child get better. He was very patient and thoughtful and provided excellent care to my child. He listens to your concerns and helps calm your fears. I trust him completely.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
Austin, TX – Aug 23, 2017
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Dr. Zwierner is the most contentious and thorough pediatric doctor I have encountered. He is completely profressional while at the same time completely personable if you initiate. He does not make you feel bad if you drop the ball on some aspect of your child's care and he has left no stone unturned in treating my daughter. The staff at his office is efficient and friendly. They always call to schedule follow up appointments. I highly recommend Dr. Zwiener.
What went well
  • Office environment
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 others found this helpful
Helpful
Austin, TX – Jun 02, 2017
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Dr. Zwiener's office is efficient without a long wait. Dr. Zwiener related really well with my 11yo son. Very pleased with this experience.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
4 others found this helpful
Helpful
Austin, TX – Apr 28, 2016
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Know Before You Go

About Me

biography

Dr. Robert Zwiener, MD is a pediatric gastroenterologist in Austin, TX and has over 40 years of experience in the medical field. He graduated from University of Texas Health Sciences Center at San Antonio Long School of Medicine in 1983. He is...read more

  • Pediatric Gastroenterology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Tex Sw Medical Center

    Residency Hospital, 1986

  • University Of Texas Health Sciences Center At San Antonio Long School Of Medicine

    Medical School, 1983
American Board of Medical Specialties®
American Board of Pediatrics®
- 
Pediatric Gastroenterology
- 
Pediatrics
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Focus on IBD

Locations

Dell Childrens Medical Group

Dell Children's Medical Group1301 Barbara Jordan Blvd Ste 401 Austin, TX 78723
1

Affiliated Hospitals

  • Ascension Seton Williamson Hospital

    201 Seton Pkwy
    Round Rock, TX 78665
    Recipient of 9
    hospital awards

    America's 250 Best Hospitals Award™ (2025)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    Patient Safety Excellence Award™ (2025, 2024)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

    How patients felt about the care they received at this hospital.

    87%
    Patients said they were given information about recovering at home

    3% higher than the national average

    76%
    Patients said that nurses always listened to them and explained things well

    1% higher than the national average

    View all patient feedback

  • Ascension Seton Hays

    6001 Kyle Pkwy
    Kyle, TX 78640
    Recipient of 14
    hospital awards

    America's 250 Best Hospitals Award™ (2025, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    87%
    Patients said they were given information about recovering at home

    3% higher than the national average

    77%
    Patients said that doctors always listened to them and explained things well

    1% higher than the national average

    View all patient feedback

  • St. David's North Austin Medical Center

    12221 N Mopac Expy
    Austin, TX 78758
    Recipient of 28
    hospital awards

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    Patient Safety Excellence Award™ (2025, 2024, 2023)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

    How patients felt about the care they received at this hospital.

    81%
    Patients said they were given information about recovering at home

    3% lower than the national average

    73%
    Patients said that doctors always listened to them and explained things well

    3% lower than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality