
Locations
Doctors Office: This is where you go for
regular check-ups and consultations.
Endoscopy Center: This is where you go
for medical procedures, including
colonoscopies, ultrasounds, studies, and more.
Malvern
Doctors Office: This is where you go for
regular check-ups and consultations.
Endoscopy Center: This is where you go
for medical procedures, including
colonoscopies, ultrasounds, studies, and more.
Main Line Endoscopy Center - West
Meet Norman (Matt) Callahan, DO
Dr. Callahan is originally from York, Pennsylvania, and attended Ursinus College, graduating in 1983 with a B.S. in biology. Upon graduating, he was commissioned a lieutenant in the United States Marine Corps and served on active duty from 1983 to 1986.
After receiving his degree from the Philadelphia College of Osteopathic Medicine in 1991, he served a rotating internship at Suburban General Hospital in Norristown, Pennsylvania. In 1995 he completed his internal medicine residency at the Lankenau Hospital, followed by a two year gastroenterology fellowship at the same institution.
Dr. Callahan is board certified by the American Board of Internal Medicine in both Internal Medicine and Gastroenterology. He is a member of the American College of Physicians, the American College of Gastroenterology, the American Gastroenterologic Association, and the American Society for Gastrointestinal Endoscopy. He was recently voted Top Doc in Philadelphia Magazine’s Top Doctors 2018.
Dr. Callahan practiced in Lewes, Delaware prior to joining Main Line Gastroenterology Associates. He is married and has two sons.
Medical Education
Philadelphia College of Osteopathic Medicine
Residency
Lankenau Hospital
Fellowship
Lankenau Hospital
Patient Forms
- Patient Forms for Main Line Offices ( 400 KB)
Prep Instructions for Procedures
- Colonoscopy Prep Instruction using PLENVU (PM) ( 222 KB)
- Colonoscopy Prep Instructions for MiraLax AM ( 68 KB)
- Colonoscopy Prep Instructions for MiraLax PM ( 76 KB)
- Colonoscopy Prep Instructions Sutab ( 29 KB)
- Colonoscopy Prep Instructions using 4 Liter GlycolElectrolyte (AM) ( 229 KB)
- Colonoscopy Prep Instructions using 4 Liter GlycolElectrolyte (PM) ( 229 KB)
- Colonoscopy Prep Instructions using CLENPIQ (AM) ( 222 KB)
- Colonoscopy Prep Instructions using CLENPIQ (PM) ( 229 KB)
- Colonoscopy Prep Instructions using Magnesium CitrateDulcolax (AM) ( 75 KB)
- Colonoscopy Prep Instructions using Magnesium CitrateDulcolax (PM) ( 76 KB)
- Colonoscopy Prep Instructions using PLENVU (AM) ( 223 KB)
- Colonoscopy Prep Instructions using SUPREP (AM) ( 162 KB)
- Colonoscopy Prep Instructions using SUPREP (PM) ( 164 KB)
- EGD and Colonoscopy Prep Instructions AM ( 79 KB)
- EGD and Colonoscopy Prep Instructions PM ( 76 KB)
- EGD Patient Prep Instructions ( 59 KB)
- Flex Sig Prep Instructions for Magnesium Citrate ( 51 KB)
- Flex Sig Prep Instructions for MiraLax ( 77 KB)
- MiraLax Gatorade 2 Day Prep ( 74 KB)
- MiraLax Gatorade Standard Prep ( 88 KB)