About Us

At Gannamaneni Gastroenterology, we are committed to delivering care with the utmost respect and compassion in an environment that is conducive to productive and honest patient/physician interaction.

Our mission is to provide quality, consultative, diagnostic and therapeutic services to our patients with symptoms and diseases of the digestive tract, liver and pancreas.

We are passionate about educating our patients about appropriate screenings and lifestyle modification to promote optimal gastrointestinal health. Our ultimate goal is to provide every patient with superior, compassionate, and cost-conscious care.

Our Physician
Contact Us

To schedule an appointment, please call 765.807.2787.

Office Phone: 765.807.2787
Office Fax: 765.807.2789
Billing Questions: 765.449.2732 or 888.449.2732

For your convenience we are in the office Monday through Friday, 8 am – 5 pm.


1345 Unity Place, Suite 110
Lafayette, IN 47905
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Dr. Gannamaneni and his staff are dedicated to providing comprehensive digestive care for you in a caring and friendly environment.

  • Barrett’s Disease
  • Bravo Study
  • Celiac Disease
  • Cirrhosis
  • Colonoscopy Including Removal of Large Polyps
  • Crohn’s Disease
  • EGD
  • ERCP
  • Flexible Scope
  • Gastroparesis
  • Hepatitis C
  • Pancreatitis
  • Peg tube Placement
  • Pill Cam
  • Ulcerative Colitis

Thank you for choosing Gannamaneni Gastroenterology.  We look forward to caring for you. The following information is important so we can provide high quality care for all of our patients.

Office Cancellations: We require a 24-hour cancellation notice. If you do not provide adequate notice then a $40 fee will be billed to you directly. This fee is not billable to insurance and payment is due immediately.

Surgery Cancellations: Your procedure requires an anesthesiologist, clinical staff and the use of a surgical suite. Our office will coordinate all of this for you. If you are unable to keep the appointment, it is imperative that you cancel 72-hours in advance. If you fail to provide adequate notice, we reserve the right to charge you a fee of $100, which is not billable to your insurance and due immediately.

No-Show Fee: When you do not show up, it creates an unused appointment slot that could have been used for another patient.  There is a $50 fee for a no-show. The no-show charge must be paid by the patient and cannot be billed to insurance.

Payment: We take the same insurance as other Unity partners.  Some insurance plans require that you meet a deductible before they pay while others require a co-pay for visits.  Please contact your insurance company to understand your financial responsibility. We collect co-pays at the time of service.  We offer a 25% discount for self-pay patients and payment is collected at the time of service.

Prescriptions: Refill requests are processed Monday through Friday 8 am – 4 pm.  The most effective way to request a prescription refill is through the Follow My Health patient portal.   

What to Bring: Please bring your insurance card(s), photo ID, and medication list to your appointment.  If you have had a colonoscopy or other scope in the past, please bring a report of the findings to your appointment.

Colonoscopy Prep & Education

A colonoscopy is an important screening tool in the fight against colon cancer.  It is the most accurate test to detect colon polyps and colon cancer, and the only test where polyps can be removed. This brochure explains your role in the prevention of colon cancer.

Colonoscopy Prep Instructions

To produce the best results, you will drink a bowel cleansing preparation to help clean out your colon. Even if your stools are clear, it is important to take all of the colon prep as directed because your body is always making fluid and small polyps can hide behind this fluid.  Please follow our instructions as indicated below:

  • Be sure to follow ALL Prep Instructions
  • Order your prep kit: www.yourpatientadvisor.com.
  • Watch the videos about colonoscopy prep below:

About Your Colonoscopy

During the procedure, a doctor examines the lining of your large intestine and rectum through a flexible tube called a colonoscope. The colonoscope is inserted into the anus and advanced slowly through the colon.  If abnormal tissue or polyps are found, the physician may remove them through the colonoscope for closer examination or biopsy.

View More Videos on Youtube

To learn more about colon health and download related brochures, visit the American College of Gastroenterology

Patient Portal

Manage Your Health Online
Gannamaneni Gastroenterology is pleased to offer our patients the latest tool in personal health care management.

Follow My Health is an electronic medical record that provides you with a secure and convenient way to manage your personal health care online. This free self-service health management tool can improve interactions with your doctor’s office, document important health care information, and allow you to make more informed decisions about your own health.

Referring Physicians

We accept referrals from all area physicians.  To refer your patient, please fill out and fax the Physician Referral Form to our office.  We will contact your patient within one business day to schedule an appointment.

Office Phone: 765.807.2787
Office Fax: 765.807.2789

Dr. Gannamaneni has privileges at Unity Surgical Center, Franciscan Health St. Elizabeth, and IU Health Arnett.

News & Events


Happy Retirement Dr. Hagen!

Thank you Dr. Hagen for your years of service to both the community and to Unity Healthcare. We wish you the best with your retirement.  

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Press Releases

Happy Retirement Dr. Hagen!

Thank you Dr. Hagen for your years of service to both the community and to Unity Healthcare. We wish you the best with your retirement.  

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Lafayette Cancer Care has received re-certification by the QOPI® Certification Program LLC

January 25, 2019– Lafayette Cancer Care has received re-certification by the QOPI® Certification Program LLC, a wholly owned subsidiary of the American Society of Clinical Oncology, Inc. (ASCO®). The QOPI® Certification Program builds on ASCO’s Quality Oncology Practice Initiative (QOPI®), providing a three-year certification for outpatient hematology-oncology practices that meet nationally recognized standards for quality […]

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Unity Healthcare and Franciscan Health Raised Funds For The YWCA Women’s Cancer Program

February 22, 2018, Lafayette, Indiana –Today at the YWCA, Unity Healthcare and Franciscan Health presented a check for $46,877.49 to the YWCA Greater Lafayette Women’s Cancer Program. The money was raised at the Annual Ultimate Pink Party hosted by Unity Healthcare and Franciscan Health. The event was held on October 20, 2017 at the Purdue Memorial Union […]

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