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Sibley Memorial Hospital

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Gastroenterology & Hepatology

3d rendering of the human body - in particular the digestive tract

Welcome to the Johns Hopkins Division of Gastroenterology and Hepatology at Sibley Memorial Hospital. Our clinicians offer the world-class expertise and unparalleled resources of Johns Hopkins Medicine to residents of the Washington, D.C. metropolitan area.

Our physicians and nurse practitioners are available to see outpatients in the Sibley Medical Building on the 3rd floor, and to provide inpatient consultations as required. All of our physicians perform outpatient endoscopic procedures at Sibley Memorial Hospital.


To make an appointment, please call our office at 202-660-5555. Please fax any required referrals or medical records to us at 202-660-6103

Direct Access Colonoscopy - Screen for Colon Cancer

All of our Gastroenterologists perform direct access colonoscopies for colon cancer screening. If your doctor has recommended you have a colonoscopy, contact our office at 202-660-5555 to schedule the procedure. From your referring provider, we need a referral, a recent history and physical, and if available any recent labs and an EKG if requested. Our fax number is 202-660-6103.


All New Patients
In preparation for your first visit, please complete and bring the New Patient Questionnaire to your appointment. Having this completed prior to your appointment will speed up your appointment check-in.

New Hepatology Referrals
If you're interested in becoming a new patient and you have not been seen by a Hopkins provider before, please complete and fax a copy of the Hepatology Patient Registration Form (available as a PDF or Word document) to the office at 202-660-7359

Meet Our Providers

Meet Our Nurse Practitioners

Joy C. Bright-Agindotan

Joy C. Bright-Agindotan, MSN, FNP-BC

Title: Certified Registered Nurse Practitioner
Specialty: Gastroenterology

Kristen Koller

Kristen Koller, CRNP

Title: Advanced Gastroenterology Nurse Practitioner; Bariatric Nurse Practitioner
Specialty: Advanced therapeutic endoscopy, bariatric endoscopy, pancreaticobiliary disease

Laura Macke

Laura Macke, MS, CRNP

Title: Certified Registered Nurse Practitioner
Specialty: Gastroenterology

Karla Pillote

Karla Pillote, MSN, CANP

Title: Certified Registered Nurse Practitioner
Specialty: Hepatology & Liver Transplant