Dr. Thirumazhisai Gunasekaran, MD

Pediatric Gastroenterology  |  
Male  |  
Age 65
Insurances AcceptedSave
Dr. Thirumazhisai Gunasekaran, MD
Dr. Thirumazhisai Gunasekaran, MD is a pediatric gastroenterology doctor who practices in Oakbrook Terrace, IL. He is 65 years old. Dr. Gunasekaran is affiliated with Loyola University Medical Center, St. Alexius Medical Center and Alexian Brothers Medical Center.

Loyola OakBrook Terrace Medical Center

1 S Summit Ave

Oakbrook Terrace, IL 60181

Contact Information

(630) 953-6600

Dr. Thirumazhisai Gunasekaran, MD

Dr. Thirumazhisai Gunasekaran, MD

Accepted insurance

  • Aetna
  • Blue Cross Blue Shield
  • Cigna
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • HealthLink
  • Humana
  • MultiPlan
  • Priority Health
  • Sagamore Health Network

*Please verify this information when scheduling an appointment.

Learn about Dr. Gunasekaran

Dr. Gunasekaran's Experience

Dr. Gunasekaran's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Pediatric Gastroenterology
  • Board certified in Pediatric Gastroenterology
  • No malpractice claims found
  • No sanctions found
  • No board actions found


  • Pediatric Gastroenterology
  • Pediatrics

Board Certifications

  • Pediatric Gastroenterology
    Accredited by: American Board of Pediatrics*

Conditions Treated

  • Anemia
  • Crohn's Disease
  • Gas-Bloat Syndrome
  • Gastroesophageal Reflux Disease (GERD)
  • Intestinal Obstruction
  • Ulcerative Colitis
  • Vomiting Disorders


  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy

Background Check

0 Malpractice Claims

No malpractice history found for Illinois.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • Madras University India
    Medical School | Graduated
  • Institute Of Child Health and Hospital For Children Madra India
    Internship Hospital | Completed
  • Prince Charleshospital/Queen Elizabeth Hospital Uk
    Residency Hospital | Completed
  • Bc Children Hospital/Univerty Of Bc Vancouver
    Fellowship Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Gunasekaran has no media or publications listed.

Languages Spoken

  • English
  • Spanish

Memberships & Professional Affiliations

Dr. Gunasekaran does not have any memberships or affiliations listed. If you are Dr. Gunasekaran and would like to add memberships or affiliations, please update your profile.

Dr. Gunasekaran's Reviews

Likelihood of recommending Dr. Gunasekaran to family and friends
based on 14 total reviews (6 with comments)
Dr. Gunasekaran's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    16 to 30 minutes
Patient Comments (6)
Antioch, IL |
Horrible experience recently with this doctor. I made an appointment for my son, showed up at the location given to me (Vernon Hills) and found that the location was boarded up....no sign, no tenants, no cars etc. I called to validate the mix up and they wouldn't tell me anything other than asking me to reschedule. Horrible customer experience and I will never reach out to this doctor or organization again.
Hoffman Est. |
Dr Guna helped diagnose my daughter after months of seeking help elsewhere. He sought out other experts in the field to help get us an answer, and finally treatment. We are so thankful to have found Dr. Guna.
Winnetka, IL |
I have never felt like I had to write a review before until now. We had a simply horrible experience with this doctor. After being 45 minutes late with no excuse as to why he spent 7 minutes with my child which included a few questions which he felt eliminated everything serious to a rectal exam which was completely mortifying and unwarranted. He then prescripted a drug that was completely inappropriate at the time( verified with another doctor) to her symptoms. NEVER go back again!
in Wauconda, IL |
Guna walked into the room without barley speaking a word. he told my daughter, who he hadn't barely spoken to, made eye-contact with or even tried to make her comfortable, to pull down her pants, both underwear and her shorts, and to show him her butt as he would be performing a rectal exam. Please note, there was never a nurse in the room, or someone to comfort here. Instantly my daughter became hysterical. There is not enough room to tell me story here. But do not bring another child to him.
in St. Charles, IL |
We have been nothing but pleased in our experiences with Dr. Guna. He listens to our concerns about our daughter's Crohn's disease, and we feel confident that we are getting the best care in Chicago. Office staff is helpful and responds quickly. We rarely have a wait in the office.
in Schaumburg, IL |
It seems that doctor Guna is first and only choice is Miralax to treat chronic pediatric constipation despite new (2015) data that Miralax should not be used long term not only pediatric but in adults as well because of toxicity FDA has opened a new research due to increasing complaints of side effects but he doesn't want to listen (he did not even know about it)and just give alternatives .he is very rigid and shows his temper, sometimes rude. it is Miralax or go find other doctor policy
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Now Accepting New Patients
Dr. Gunasekaran accepts 10 insurance carriers
  • Aetna
    Aetna HMO
    Choice Plus POS II
  • Blue Cross Blue Shield
    Blue Card PPO
  • Cigna
    Cigna HMO
    Cigna PPO
    Open Access Plus
  • Coventry Health Care
    Coventry Health America PPO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • HealthLink
    HealthLink PPO
  • Humana
    Choice Care PPO
    Preferred PPO
  • MultiPlan
    MultiPlan PPO
  • Priority Health
    Priority PPO
  • Sagamore Health Network
    Sagamore Plus

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Gunasekaran has admitting privileges

Alexian Brothers Medical Center
800 Biesterfield Rd
Elk Grove Village, IL 60007
View Hospital Profile
Loyola University Medical Center
2160 S 1st Ave
Maywood, IL 60153
View Hospital Profile
St. Alexius Medical Center
1555 Barrington Rd
Hoffman Estates, IL 60169
View Hospital Profile

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