Summary

Dr. Hari Diwakaran is a gastroenterologist and internal medicine physician who earned his medical degree from Madras Medical College. He completed his residency at St. Louis University School of Medicine and brings 38 years of clinical experience to his practice. Dr. Diwakaran is fluent in Spanish and French.

Dr. Diwakaran practices at SSM Saint Joseph Health Center Wentzville and sees patients in Saint Charles, Missouri. He specializes in treating inflammatory bowel disease and provides comprehensive gastroenterology care. His internal medicine background allows him to address a wide range of digestive and general health concerns. Patients have given him an average rating of 4.8 out of 5 on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.8
  • 38 years of experience
  • 44 insurance plans accepted
  • speaks Spanish, French
  • St Louis University School Of Medicine
  • 4 written reviews
  • 3 specialties
  • 12 areas of expertise
  • 1 board certification
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Location

Hari Diwakaran

400 1st Capitol Dr Ste 201Saint Charles, MO 63301
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

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Hari Diwakaran, MDAshley Anderson, APRNShauna Sanderson, APRNRebecca Humphries, APRN
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.8 
38 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks Spanish, French Speaks English Speaks English Speaks English
Saint Charles , MOSACRAMENTO , CATallahassee , FLSACRAMENTO , CA
Med School: Madras Medical College Med School: East Tennessee State University - Quillen College of Medicine Med School: Creighton University College of Nursing Med School: Emory University
Current Profile
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Insurance Plans Accepted by Hari Diwakaran

  • Aetna
  • Aetna - Medicare
  • Aetna Better Health
  • Anthem Blue Cross
  • Anthem Blue Cross - Federal Employees Program
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Illinois
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Rhode Island
  • Blue Cross Blue Shield of Tennessee
  • CHAMPVA
  • Cigna
  • Cigna-HealthSpring
  • Dean Health Plan
  • Dean Health Plan - HMO
  • Devoted Health
  • ESSENCE Healthcare
  • ESSENCE Healthcare - HMO
  • First Health (Coventry Health Care)
  • Golden Rule
  • Healthlink
  • Healthlink - PPO
  • Humana
  • Medica
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medical Mutual
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Meritain Health
  • Meritain Health - HMO
  • Mutual of Omaha
  • Oscar Health Insurance
  • Provider Partners Health Plan
  • Sana
  • STLDentalPlan| LLC
  • Transamerica
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • UnitedHealthOne
  • Wellcare

Medical Specialties

Hari Diwakaran has the following 3 specialties

Specialty Expertise

Hari Diwakaran has the following 12 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Gastroenterologist
  • Hemorrhoids
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

38 Years Experience

Hari Diwakaran holds an expired medical license in the state of Missouri.

Medical License

Medical Doctor with an expired medical license in the state of Missouri that expired in 2026.

Education & Training

Residency

Completed their residency at St Louis University School Of Medicine.

Medical School

Graduated from Madras Medical College in 1988.

NPI Number

Hari Diwakaran's NPI number is 1285694703.

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Frequently Asked Questions

Does Hari Diwakaran accept virtual/telehealth appointments?
Hari Diwakaran has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Hari Diwakaran's office located?
Hari Diwakaran's office is located at 400 1st Capitol Dr Ste 201, Saint Charles, MO, 63301.
Which hospitals is Hari Diwakaran affiliated with?
Hari Diwakaran is affiliated with Ssm Saint Joseph Health Center Wentzville.
How can I make an appointment with Hari Diwakaran?
You can find contact information for Hari Diwakaran here on Vitals.
Does Hari Diwakaran accept my insurance?
You can see the insurance plans that Hari Diwakaran accepts on their Vitals profile.

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