Gregory Keith Nelligan, MD

Gastroenterology and Internal Medicine
Rockford, IL 61107
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Patients’ Perspective

  • Easy scheduling
  • On-time appointments
  • Friendly staff

About Gregory Keith Nelligan MD

Gregory Keith Nelligan, MD is a health care provider primarily located in Rockford, IL. He has 39 years of experience. His specialties include Gastroenterology and Internal Medicine.


Rockford Va Outpatient Clinic 816 Featherstone Rd Rockford, IL 61107


Dr. Gregory Keith Nelligan has the following 2 specialties

Specialty Expertise

Dr. Gregory Keith Nelligan has the following 10 areas of expertise

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


39 Years Experience

Finch University Of Health Sciences


University Of Illinois At Chicago College Of Medicine

Graduated in 1983

Dr. Gregory Keith Nelligan Accepts the Following Insurance

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More about Dr. Gregory Keith Nelligan

Dr. Nelligan graduated from the University of Illinois At Chicago College of Medicine in 1983. He works in Rockford, IL and specializes in Gastroenterology and Internal Medicine.

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