
Overview
John Hahn, MD, is an Atlantic Medical Group gastroenterologist specializing in diseases and disorders of the digestive system including the liver, pancreas, and esophagus. Fellowship-trained in gastroenterology, he is board-certified in both internal medicine and gastroenterology by the American Board of Internal Medicine.Dr. Hahn is a seasoned clinician with over 37 years of experience in gastroenterology. He applies his knowledge, expertise, and state-of-the-art technology to provide diagnosis, treatment, and care for patients experiencing acute and chronic gastrointestinal problems, including inflammatory bowel diseases and esophageal conditions. He takes time with each patient to explain tests, procedures, and therapies with the goal of helping patients cope with their gastrointestinal conditions in order to lead active and healthy lives. Dr. Hahn is a member of the American College of Gastroenterology.After earning his degree from UMDNJ-New Jersey Medical School, Dr. Hahn completed his residency at University Hospital-New Jersey Medical School where he also pursued fellowship training in gastroenterology. He has consistently been named a “Top Doctor” in numerous regional guides including New York Magazine, New Jersey Monthly, Jersey’s Best magazine, and Castle Connolly Top Doctors. He is a participating provider of the Atlantic Accountable Care Organization.
Dr. Hahn is highly rated in 3 conditions, according to our data. His top areas of expertise are Diverticular Disease, Familial Adenomatous Polyposis, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Endoscopy.
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Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
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- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- INSURANCE PLAN
- MEDICARE MAPD
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- OTHER COMMERCIAL
- OTHER MEDICARE PART D
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
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- INDEMNITY
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- MEDICARE SNP
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE PART D
- EPO
- HMO
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- MEDICARE DISCOUNT CARD
- MEDICARE PDP
- OTHER MEDICARE
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
534 Avenue E., Suite 1C, Bayonne, NJ 07002
Additional Areas of Focus
Dr. Hahn has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.
ColumbiaDoctors - Midtown
David Katzka is a Gastroenterologist in New York, New York. Dr. Katzka is highly rated in 18 conditions, according to our data. His top areas of expertise are Esophagitis, Eosinophilic Esophagitis, Barrett Esophagus, Endoscopy, and Gastrectomy.
CUIMC/Herbert Irving Pavilion
Bo Shen, MD, is one of the world’s pre-eminent leaders in interventional inflammatory bowel disease (IBD) and pouch-related disorders due to his specialized expertise and experience treating a wide range of these conditions. Dr. Shen is the director of the IBD Center at Columbia and co-director of Columbia’s Global Center for Integrated Colorectal Surgery and IBD Interventional Endoscopy. He is also the Vice Chair for Innovation in Medicine and Surgery and a Professor of Medicine (in Surgery) and Edelman-Jarislowsky Professor in Surgical Sciences.In addition to pouchitis and pouch diseases, Dr. Shen specializes in critical diagnostic evaluation, and medical and endoscopic management of IBD, GI endoscopy and imaging technology. Dr. Shen is known as a pioneer in interventional endoscopic therapy for IBD and ileal pouch disorders - this includes postponing or eliminating the need for surgery in some cases.Dr. Shen comes to Columbia/NewYork-Presbyterian from the Cleveland Clinic, where he served as medical director for the Center of Inflammatory Bowel Diseases and the Ed and Joey Story Endowed Chair, Digestive Disease and Surgery Institute. While there, Dr. Shen established a subspecialty Pouchitis Clinic and Interventional IBD Unite - the first and largest of its kind in the United States. He also created an IBD Board, modeled after oncology tumor boards, to help manage the most challenging cases with multiple specialists.A prolific researcher in the field with more than 600 peer-reviewed articles, Dr. Shen is funded by a number of government and philanthropic organizations, including the NIH, the American Gastroenterological Association, American College of Gastroenterology, the Broad Foundation, and the Crohn’s and Colitis Foundation of America. Dr. Shen is highly rated in 35 conditions, according to our data. His top areas of expertise are Crohn's Disease, Viral Gastroenteritis, Colitis, Ileostomy, and Endoscopy.
Recanati Miller Transplantation Institute
Thomas Schiano is a Gastroenterologist in New York, New York. Dr. Schiano is highly rated in 31 conditions, according to our data. His top areas of expertise are Hepatitis, Hepatitis C, Autoimmune Hepatitis, Liver Transplant, and Splenectomy.
Frequently Asked Questions about Dr. John C. Hahn
How do I make an appointment with Dr. John C. Hahn?
You can book an appointment with Dr. John C. Hahn by calling their office at 201-823-0450. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.
Is Dr. John C. Hahn a top-rated expert for Diverticular Disease?
MediFind is an objective health platform that identifies experts based on real-world data. Dr. John C. Hahn is classified as an Advanced expert for Diverticular Disease, 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 C. Hahn specialize in?
While Dr. John C. Hahn is a Gastroenterology, they have specific expertise in Diverticular Disease, Familial Adenomatous Polyposis, and Gastroesophageal Reflux Disease (GERD). MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.
Does Dr. John C. Hahn accept my insurance?
Dr. John C. Hahn accepts most major insurance plans, including Aetna and Ambetter. We recommend calling the office directly at 201-823-0450 to verify that your specific plan is currently accepted before your visit.
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
- Advanced
- Diverticular DiseaseDr. Hahn isAdvanced. Learn about Diverticular Disease.
- Familial Adenomatous Polyposis
- Gastroesophageal Reflux Disease (GERD)
- Experienced
- AnemiaDr. Hahn isExperienced. Learn about Anemia.
- Angiodysplasia of the ColonDr. Hahn isExperienced. Learn about Angiodysplasia of the Colon.
- Barrett EsophagusDr. Hahn isExperienced. Learn about Barrett Esophagus.
- Benign Esophageal StrictureDr. Hahn isExperienced. Learn about Benign Esophageal Stricture.
- Childhood VolvulusDr. Hahn isExperienced. Learn about Childhood Volvulus.
- Chronic Erosive GastritisDr. Hahn isExperienced. Learn about Chronic Erosive Gastritis.

