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Dr. Theodoros Voloyiannis, MD

Dr. Theodoros Voloyiannis, MD

Colorectal Surgery*

Dr. Theodoros Voloyiannis, MD is a colorectal surgeon in Webster, TX. He is affiliated with medical facilities such as HCA Houston Healthcare Southeast and HCA Houston Healthcare Medical Center. He is accepting new patients and telehealth appointments.

4.9 Star Rating
Based on 49 reviews 4.9 Star Rating (49 reviews)

At a Glance

  • Areas of ExpertiseDr. Voloyiannis specializes in the areas of Colon & Rectal Surgery & General Surgery. See board certifications
  • Explains Conditions WellPatients said this doctor explains conditions well. See reviews
  • Offers TelehealthThis doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top HospitalGastrointestinal Care Excellence Award™ See hospitals

More Colon & Rectal Surgery Specialists at HCA Houston Healthcare Southeast

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Dr. Voloyiannis' Reviews

Likelihood to recommend Dr. Voloyiannis

4.9

49 ratings, 27 with a written review
5 Star
96%
96%
4 Star
0%
0%
3 Star
2%
2%
2 Star
0%
0%
1 Star
2%
2%

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RecentHighestLowestMost Helpful
What went well
  • I felt respected
  • 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
Mar 25, 2025
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Helpful
Demet Gurler Khoury – Mar 18, 2025
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • I felt respected
  • 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 people found this helpful
Helpful
Felipa – May 09, 2024
We are happy to hear you had such a positive...Read More
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
No results
What could be improved
No results
Helpful
Joe – Sep 29, 2023
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • I felt respected
  • 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 person found this helpful
Helpful
Sharon Marsh – Aug 06, 2023
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What went well
  • I felt respected
  • 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
Aug 05, 2023
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • I felt respected
  • Listened & answered questions
  • Staff friendliness
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Aug 02, 2023
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • I felt respected
  • 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 person found this helpful
Helpful
Apr 21, 2023
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
No results
What could be improved
No results
Helpful
Mar 02, 2023
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Julia Stanford – Nov 20, 2022
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • 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
3 people found this helpful
Helpful
Shyanna Woods Lewis – Jul 25, 2022
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What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Trusted the provider's decisions
What could be improved
  • Long wait times
3 people found this helpful
Helpful
Roger A. – May 21, 2022
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
2 people found this helpful
Helpful
L. Marie Nash – Apr 14, 2022
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What went well
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 person found this helpful
Helpful
MadeinNYC – Mar 25, 2022
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What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Helpful
Cecile Lalli Calvert – Dec 13, 2021
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • 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
J. Carlos Rossi – Feb 27, 2021
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • 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 people found this helpful
Helpful
Dreux Goan – Feb 27, 2021
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • 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
3 people found this helpful
Helpful
Tami – Aug 25, 2019
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What went well
  • Listened & answered questions
  • Staff friendliness
What could be improved
  • Difficult to schedule appointment
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
1 person found this helpful
Helpful
Jul 27, 2019
Thank you for sharing this concern with us. We...Read More
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?
What went well
  • 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 person found this helpful
Helpful
Jun 29, 2019
×Post a ResponseAre you Dr. Theodoros Voloyiannis, MD?

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About Me

care philosophy

To provide excellent care to our patients with benign and malignant conditions of the colon, rectum, and anus.

biography

Born in Thessaloniki, Greece, Dr. Voloyiannis earned his medical degree at the Aristotle University of Thessaloniki Medical School and completed his Surgical Residency at Baylor College of Medicine, M.E. DeBakey Department of Surgery in Houston....read more
  • Colorectal Surgery

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

  • The University Of Texas Health Science Center At Houston

    Fellowship Hospital
  • Tx

    Fellowship Hospital
  • Baylor College Of Medicine

    Residency Hospital
  • Tx

    Residency Hospital
  • Baylor College Of Medicine

    Internship Hospital
  • Tx

    Internship Hospital
American Board of Medical Specialties®
American Board of Colon & Rectal Surgery®
Colon & Rectal Surgery
American Board of Surgery®
General Surgery
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.
  • English

  • Greek

  • Spanish

Affiliated Hospitals

  • HCA Houston Healthcare Southeast

    4000 Spencer Hwy
    Pasadena, TX 77504
    Recipient of 16
    hospital awards

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

    Superior clinical outcomes in bowel obstruction treatment, colorectal surgeries, gallbladder removal, and upper gastrointestinal surgery

    Gastrointestinal Surgery Excellence Award™ (2025)

    Superior clinical outcomes in bowel obstruction treatment, colorectal surgeries, gallbladder removal, and upper gastrointestinal surgery

    View all awards

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

    78%
    Patients said they were given information about recovering at home

    6% lower than the national average

    71%
    Patients said their room and bathroom were always kept clean

    4% higher than the national average

    View all patient feedback
  • HCA Houston Healthcare Medical Center

    1313 Hermann Dr
    Houston, TX 77004
    Recipient of 3
    hospital awards

    Gastrointestinal Care Excellence Award™ (2025)

    Superior clinical outcomes in bowel obstruction treatment, colorectal surgeries, gallbladder removal, and upper gastrointestinal surgery

    Gastrointestinal Surgery Excellence Award™ (2025)

    Superior clinical outcomes in bowel obstruction treatment, colorectal surgeries, gallbladder removal, and upper gastrointestinal surgery

    View all awards

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

    80%
    Patients said that doctors always listened to them and explained things well

    4% higher than the national average

    80%
    Patients said they were given information about recovering at home

    4% lower than the national average

    View all patient feedback
  • HCA Houston Healthcare Clear Lake

    500 W Medical Center Blvd
    Webster, TX 77598
    Recipient of 27
    hospital awards

    America’s 100 Best Hospitals for Gastrointestinal Surgery Award™ (2025, 2024, 2023)

    Superior clinical outcomes in bowel obstruction treatment, colorectal surgeries, gallbladder removal, and upper gastrointestinal surgery

    Surgical Care Excellence Award™ (2025)

    Superior clinical outcomes in bowel obstruction treatment, colorectal surgeries, gallbladder removal, and upper gastrointestinal surgery

    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

    74%
    Patients said their room and bathroom were always kept clean

    7% higher than the national average

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