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Accepted Insurance

  • Aetna
  • Anthem Blue Cross Blue Shield (BCBS)
  • Anthem Blue Cross Blue Shield (BCBS) of Colorado
  • Anthem Blue Cross Blue Shield (BCBS) of Connecticut
  • Anthem Blue Cross of California
  • Assurant Health
View All Insurance


Primary: Gastroenterologist (Stomach & Bowel Specialist)

Sub-Specialty: General

Additional Specialties: Anal Conditions, Liver Problems, Ibs

Specializing In Gastroenterology Related Diseases.

Contact us today!


At Consultants In Gastroenterology, we specialize not only in 11 related diseases and problems, but we are also committed to your rehabilitation and confidentiality. Consulting with one of our five board-certified doctors will put you at ease knowing that we will do everything possible to get you to your goals.

We specialize in the following categories:

Chronic Hepatitis

• IBS (Irritable Bowel Syndrome)

• Chronic liver disease

• Hemorrhoids

• Colitis

• Heart burn

• Ulcers


• Crohns disease

• Constipation/diarrhea

• Bowel rectal problems

Consultants In Gastroenterology consists of experienced doctors: Joel A. Cahan, MD, DO, David Herbstman, MD and Praveen Nallapreddy, MD.

At our practice, we accept most major insurance, as well as Visa and MasterCard for your convenience. We also see patients in Dyer, St. John and Olympia Fields, IL.

Call Consultants In Gastroenterology today to consult one of our physicians or for the location closest to you.


Accepts New Patients
  • Diverticulosis
  • Colon Polyps
  • Acid Reflux
  • Pain
  • Vascular Disease
  • Gastritis
|Abdominal Surgery|Endoscopy|Colonoscopy

Location & Hours

Practice Affiliations

Practice At 701 Superior Ave Suite G

701 Superior Ave Suite G

Munster, IN 46321

Main Location

701 Superior Ave Ste G

Munster, IN 46321

Regular HoursBy Appointment


Payment Method
visa, master card

Other Information

Physicians & Surgeons, Gastroenterology (Stomach & Intestines), Physicians & Surgeons
Other Information

Specialties: Anal Conditions, Liver Problems, Ibs


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