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Dr. Karthik Ragunathan, MD
Gastroenterology* Age 38
Dr. Karthik Ragunathan, MD
1.0 (1 Ratings)
Dr. Karthik Ragunathan, MD is a Gastroenterologist in Denison, TX.
Dr. Karthik Ragunathan, MD
1.0 (1 Ratings)

Dr. Karthik Ragunathan, MD

Gastroenterology* Age 38
Denison, TX
Accepting new patients
Dr. Karthik Ragunathan, MD is a Gastroenterologist in Denison, TX.

About Dr. Karthik Ragunathan, MD

Dr. Karthik Ragunathan, MD is a Gastroenterologist in Denison, TX. Dr. Ragunathan has experience treating conditions like Duodenal Ulcer, Diaphragmatic and Hiatal Hernia, Esophageal Motility Disorders, Constipation and Gastric Ulcer among other conditions at varying frequencies. Dr. Ragunathan's office accepts new patients. Dr. Ragunathan also speaks Tamil and Telugu. Dr. Ragunathan is board certified in Gastroenterology and accepts multiple insurance plans.

Low Wait Times

Patients are usually seen in 10 minutes or less.

Experience Check

Enter a condition or procedure
Duodenal Ulcer
Diaphragmatic and Hiatal Hernia
Esophageal Motility Disorders
Duodenal Ulcer
Diaphragmatic and Hiatal Hernia
Esophageal Motility Disorders
Constipation
Gastric Ulcer
Intestinal Ulcer
Hemorrhoids
Gastroesophageal Reflux Disease (GERD)
Gastrointestinal Bleeding
Intestinal Diverticulosis
Noninfectious Gastroenteritis and Colitis
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Gallstones
Hypokalemia
Manometry
Rigid Proctosigmoidoscopy
Flexible Sigmoidoscopy
Gastroptosis
Dehydration
Nausea
  • View other providers who treat Nausea
Reflux Esophagitis
Duodenal Polypectomy
Anemia
  • View other providers who treat Anemia
Endoscopy
Esophagitis
Congenital Anomaly Intestine
Colorectal Polyp
Gastritis
Colonoscopy
Dysphagia
Barrett's Esophagus
Metabolic Dysfunction Associated Steatotic Liver Disease (MASLD)
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Abdominal Pain
Vomiting Disorders
Diarrhea
  • View other providers who treat Diarrhea
Irritable Bowel Syndrome
Diffuse Esophageal Spasm
Malnutrition
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Intestinal Obstruction
Anal or Rectal Pain
Barretts Esophagus with Dysplasia
Cirrhosis
Chronic Gastritis
Unexplained Weight Loss
Vitamin_Deficiency
Inflammatory Bowel Disease
Retroperitoneum Cancer
Esophageal Varices
Esophageal Ulcer
Pancreas Surgeries
Acute Gastritis
Alcoholic Cirrhosis
Alcoholic Fatty Liver
Alcoholic Hepatic Failure
Alcoholic Hepatitis
All Types of Food Poisoning
Ascites
  • View other providers who treat Ascites
Benign Neoplasm of the Digestive System
Bile Duct Obstruction
Boerhaave's Syndrome
Bowel Strangulation
Celiac Disease
Cholangitis
Colon Cancer
Congenital Anomaly Esophagus
Crohn's Disease
Duodenal Cancer
Duodenitis
Dysentery
E. coli Food Poisoning
Enteritis
Eosinophilic Esophagitis
Esophageal Diverticulum
Familial Adenomatous Polyposis
Gas-Bloat Syndrome
Gastrointestinal Malabsorption
Gastrojejunal Ulcer
Gastroparesis
Heartburn
Hepatitis B
Hepatitis C
Hereditary Amyloidosis
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Ileus
  • View other providers who treat Ileus
Indigestion
Infectious Diarrheal Disease
Intestinal Diverticulitis
Ischemic Colitis
Lactose Intolerance
Liver Damage from Alcohol
Mallory-Weiss Syndrome
Megacolon
Non-Neonatal Jaundice
Pancreatic Pseudocyst
Pancreatitis
Pelvic Abscess
Peptic Ulcer
Pouchitis
Pyloric Stenosis
Rectal Ulcer
Spleen Cyst
Splenomegaly
Ulcerative Colitis
Upper Digestive Tract Cancer
Viral Enteritis
Viral Hepatitis
Bile Duct Procedure
Biliary Drainage
Colon Cancer Screening
Colorectal Cancer Screening
Gallbladder Scan
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Laparoscopic Removal of Stones from Biliary Tract
Liver Biopsy
Liver Function Test
pH Probe
  • View other providers who treat pH Probe
Screening Colonoscopy
Sigmoidoscopy
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing

Accepted Insurance Plans

* Please verify this information when scheduling an appointment.
  • HealthyBlue Advantage
  • First Health (Coventry Health Care) PPO
  • Choice Plus POS
    Options PPO
    Navigate Plus POS
    Navigate HMO
  • Aetna HMO
    Premier Care Network Plus - Innovation Health
    Open Choice PPO
    APCN Choice POS II
    Signature Administrators PPO
    Elect Choice (Open Access) EPO
    Choice Plus POS II
    Managed Choice (Open Access) POS
  • BlueCard PPO
  • First Choice Health PPO
  • Blue Essentials HMO
    Blue Advantage HMO
    Blue Choice
  • Cigna HMO
    LocalPlus
    Open Access Plus
    Cigna PPO

Where Dr. Karthik Ragunathan, MD Sees Patients

  1. 1 Office
    5012 S US Highway 75 Ste 250, Denison, TX 75020

What Patients Say

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Based on 1 Reviews
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Patient Reviews
Apr 23, 2025
The whole experience was terrible. My PCP referred me to him. It took 2 weeks to get an appointment. His office is really good at getting the fees collected but not keeping up with your records. The doctor is difficult to understand verbally. The upper and lower GI he performed was done properly I guess. The results he gave me were totally wrong according to the CAT scan and 2 other doctors I had review them. He did not provide any advice to help with the pain I was in other than keep doing what you are doing.
— Apr 23, 2025
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Meet Dr. Karthik Ragunathan, MD

Languages Spoken
Tamil
Telugu
Languages Spoken
Specialties*
Gastroenterology
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Ragunathan communicate via email?
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Does Dr. Ragunathan offer an online patient portal?
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Does Dr. Ragunathan have free onsite parking?
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Does Dr. Ragunathan specialize in working with children or adolescents?
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FAQs About Dr. Ragunathan's Practice

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Karthik Ragunathan, MD. To arrange an appointment, call the number on Dr. Ragunathan's profile.

Dr. Ragunathan frequently treats the following conditions: Duodenal Ulcer, Diaphragmatic and Hiatal Hernia, Esophageal Motility Disorders, Constipation and Gastric Ulcer. See more on Sharecare.

Dr. Karthik Ragunathan, MD is affiliated with Texoma Medical Center.

Yes, Dr. Karthik Ragunathan, MD holds board certification in Gastroenterology and Internal Medicine.

Training & Medical Education
Board Certifications
  • Gastroenterology and Internal Medicine
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

Hospitals Where Dr. Karthik Ragunathan, MD Practices

  • Texoma Medical Center

    5016 S US Highway 75, Denison, TX

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