
Join to View Full Profile
816 Featherstone RdRockford, IL 61107
Phone+1 815-227-0081
Fax+1 815-387-5316
Dr. Nelligan is on Doximity
As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.
- Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
- Connect with colleagues in the same hospital or clinic.
- Read the latest clinical news, personalized to your specialty.
Education & Training
- Chicago Medical School/Rosalind Franklin University of Medicine ScienceFellowship, Gastroenterology, 1986 - 1988
- Advocate Health Care/Advocate Lutheran General HospitalResidency, Internal Medicine, 1983 - 1986
- University of Illinois College of MedicineClass of 1983
Certifications & Licensure
- IL State Medical License 1984 - 2026
- American Board of Internal Medicine Internal Medicine
- American Board of Internal Medicine Gastroenterology
Publications & Presentations
PubMed
- 129 citationsColonoscopy training in gastroenterology fellowships: determining competenceBret J. Spier, Mark E. Benson, Patrick R. Pfau, Gregory Nelligan, Michael R. Lucey
Gastrointestinal Endoscopy. 2010-02-01
Viewing the full profile is available to verified healthcare professionals only.
Find your profile and take control of your online presence: