Overview
John Allen is a Gastroenterologist practicing medicine in Ann Arbor, Michigan. He has been practicing medicine for over 45 years.
His clinical expertise encompasses Colorectal Cancer, Familial Colorectal Cancer, Gardner Syndrome, and Familial Adenomatous Polyposis.
Specialties
Licenses
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Insurance
Accepted insurance can change. Please verify directly with the provider.
Locations
1500 E Medical Center Dr, Ann Arbor, MI 48109
Taubman Center
Anna Lok is a Gastroenterologist and a Hepatologist practicing medicine in Ann Arbor, Michigan. Dr. Lok is highly rated in 27 conditions, according to our data. Her clinical expertise encompasses Hepatitis, Hepatitis C, Hepatitis B, Non-Alcoholic Fatty Liver Disease, and Liver Transplant. Dr. Lok is currently accepting new patients.
Rogel Cancer Center
I am a transplant hepatologist and clinical researcher committed to the care of patients with liver cancer and advanced liver disease. I serve as the Medical Director of the Multidisciplinary Liver Tumor Clinic and Medical Director of the Living Donor Liver Transplantation Program. I believe that patients should have an active voice in their care and I work jointly with patients to ensure that their needs are met. Dr. Parikh is highly rated in 27 conditions, according to our data. His clinical expertise encompasses Liver Cancer, Cirrhosis, Liver Failure, Liver Transplant, and Endoscopy. Dr. Parikh is board certified in Gastroenterology and Transplant Hepatology. Dr. Parikh is currently accepting new patients.
East Ann Arbor Ambulatory Surgery & Medical Procedures Center
Dr. Fontana is a Professor of Medicine and Director of the Transplant Hepatology Fellowship Program. He is recognized as a national and international expert in managing patients with cirrhosis, portal hypertension and nearly all forms of acute and chronic liver disease. He has particular research interest in patients with drug induced liver injury, viral hepatitis, and genetic liver disease. Dr. Fontana is highly rated in 29 conditions, according to our data. His clinical expertise encompasses Liver Failure, Hepatitis, Hepatitis C, Liver Transplant, and Endoscopy. Dr. Fontana is board certified in Gastroenterology and Transplant Hepatology. Dr. Fontana is currently accepting new patients.
Frequently Asked Questions about Dr. John I. Allen
How do I make an appointment with Dr. John I. Allen?
You can book an appointment with Dr. John I. Allen by calling their office at 734-647-5944. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. John I. Allen a top-rated expert for Colorectal Cancer?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. John I. Allen is classified as an Experienced expert for Colorectal Cancer, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.
What conditions does Dr. John I. Allen specialize in?
While Dr. John I. Allen is a Gastroenterology, they have specific expertise in Colorectal Cancer, Familial Colorectal Cancer, and Gardner Syndrome. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- Colorectal CancerDr. Allen isExperienced. Learn about Colorectal Cancer.
- EsophagitisDr. Allen isExperienced. Learn about Esophagitis.
- Familial Adenomatous PolyposisDr. Allen isExperienced. Learn about Familial Adenomatous Polyposis.
- Familial Colorectal CancerDr. Allen isExperienced. Learn about Familial Colorectal Cancer.
- Gardner SyndromeDr. Allen isExperienced. Learn about Gardner Syndrome.
- Turcot SyndromeDr. Allen isExperienced. Learn about Turcot Syndrome.


