Dr. Kostas Sideridis, DO

Gastroenterology*MaleAge 52

Gastroenterology*

Dr. Kostas Sideridis, DO is a gastroenterologist in Syosset, NY. Dr. Sideridis has extensive experience in Gastrointestinal Disorders, Esophageal Disorders, and Pancreatic Disease. He is affiliated with medical facilities such as Long Island Jewish Medical Center and North Shore University Hospital. He is accepting new patients and telehealth appointments.

Dr. Kostas Sideridis, DO

Long Island Medical PC

237 Jericho Tpke Syosset, NY 11791
Telehealth availableTelehealth services available
Telehealth availableTelehealth services available
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Accepting new patients

Hospital Highlight

Dr. Sideridis is affiliated with North Shore University Hospital Manhasset, a highly rated hospital.

Dr. Sideridis is a Healthgrades Choice provider in Gastroenterology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Area of Expertise
    Dr. Sideridis specializes in the area of Gastroenterology. 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
    Patient Safety Excellence Award™ See hospitals

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Dr. Sideridis' Reviews

Likelihood to recommend Dr. Sideridis

4.4

31 ratings, 15 with a written review
5 Star
81%
81%
4 Star
6%
6%
3 Star
0%
0%
2 Star
0%
0%
1 Star
13%
13%

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RecentHighestLowestMost Helpful
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
David – Nov 16, 2022
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What went well
  • Wait times
What could be improved
No results
Helpful
Sep 15, 2022
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What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Staff wasn't friendly
  • Appointment was rushed
6 people found this helpful
Helpful
Mar 19, 2022
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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
No results
Helpful
Oct 12, 2020
×Post a ResponseAre you Dr. Kostas Sideridis, DO?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Didn't explain conditions well
4 people found this helpful
Helpful
Ellen Jarrell – Jul 24, 2019
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What went well
No results
What could be improved
No results
5 people found this helpful
Helpful
Apr 16, 2019
×Post a ResponseAre you Dr. Kostas Sideridis, DO?
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
  • Staff wasn't friendly
3 people found this helpful
Helpful
Nov 17, 2018
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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
  • Wait times
What could be improved
No results
3 people found this helpful
Helpful
Donna Lanning in Hicksville , NY – Nov 10, 2018
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What went well
No results
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
  • Long wait times
2 people found this helpful
Helpful
El Jay Cee in NY – Jun 05, 2018
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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
No results
2 people found this helpful
Helpful
May 12, 2018
×Post a ResponseAre you Dr. Kostas Sideridis, DO?
What went well
No results
What could be improved
  • 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
2 people found this helpful
Helpful
Plainview – Apr 25, 2018
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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
No results
2 people found this helpful
Helpful
Jeannie Dionisio in Massapequa Park, NY – Apr 30, 2017
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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
No results
6 people found this helpful
Helpful
Nikki in West Babylon, NY – Apr 04, 2017
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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
No results
3 people found this helpful
Helpful
Queens Village, NY – Feb 08, 2017
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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
  • Wait times
What could be improved
No results
4 people found this helpful
Helpful
Florence C. in Levittown, NY – Jul 29, 2016
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About Me

biography

Dr. Kostas Sideridis, DO is a gastroenterologist in Syosset, NY. Dr. Sideridis has extensive experience in Gastrointestinal Disorders, Esophageal Disorders, and Pancreatic Disease. He is affiliated with medical facilities such as Long Island Jewish...read more
  • 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.

  • Long Island Jewish Medical Center

    Fellowship Hospital
  • Winthrop - University Hospital

    Residency Hospital
  • Wychoff Heights Medical Center

    Internship Hospital
American Board of Medical Specialties®
American Board of Internal Medicine®
Gastroenterology
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

Dr. Sideridis is a Healthgrades Choice provider in Gastroenterology

    Read our methodology

    Locations

    Long Island Medical PC

    Long Island Medical PC237 Jericho Tpke Syosset, NY 11791
    1

    Affiliated Hospitals

    • North Shore University Hospital

      300 Community Dr
      Manhasset, NY 11030
      Recipient of 19
      hospital awards

      Patient Safety Excellence Award™ (2024, 2023)

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

      Outstanding Patient Experience Award™ (2022)

      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.

      83%
      Patients said they were given information about recovering at home

      1% 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
    • Long Island Jewish Medical Center

      270 05 76 Ave
      New Hyde Park, NY 11040
      Recipient of 14
      hospital awards

      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.

      83%
      Patients said they were given information about recovering at home

      1% lower than the national average

      75%
      Patients said that doctors always listened to them and explained things well

      1% lower than the national average

      View all patient feedback
    • Plainview Hospital

      888 Old Country Rd
      Plainview, NY 11803
      Recipient of 6
      hospital awards

      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.

      84%
      Patients said they were given information about recovering at home
      72%
      Patients said that doctors always listened to them and explained things well

      4% lower than the national average

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