Dr. John Hahn, MD

Dr. John Hahn, MD

Gastroenterology  |  
Male  |  
Age 58
(12)
Insurances AcceptedSave
Dr. John Hahn, MD is a gastroenterology doctor who practices in Bayonne, NJ. He is 58 years old.

534 Avenue E Ste 1C

Bayonne, NJ 07002

Contact Information

(201) 823-0450

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Louisiana
  • Capital District Physician's Health Plan (CDPHP)
  • Cigna
  • EmblemHealth
  • Empire Blue Cross Blue Shield
  • First Health (Coventry Health Care)
  • Horizon Blue Cross Blue Shield of New Jersey
  • 5 More

*Please verify this information when scheduling an appointment.

Learn about Dr. Hahn

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you

Top Care Areas

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See how frequently Dr. Hahn performs your care needs compared to other doctors.

Abdominal Disorders
very high
more than 99% of peers
Ulcer
very high
more than 99% of peers
Gastrointestinal Diseases
very high
more than 99% of peers

Dr. Hahn's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

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2

Specialties

  • Gastroenterology
  • Internal Medicine
2

Board Certifications

  • Gastroenterology
    Accredited by: American Board of Internal Medicine*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*
68

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Abscess
  • Anal or Rectal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Biliary Atresia
  • Blood Disorders
  • Cancer
  • Celiac Disease
  • Cholecystitis and Gallstones
  • Cholelithiasis
  • Cirrhosis
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysphagia
  • Enteritis
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastroparesis
  • Heartburn
  • Hemochromatosis
  • Hemorrhoids
  • Hepatitis C
  • Hernia
  • Ileus
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Liver Damage from Alcohol
  • Malnutrition
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Non-Neonatal Jaundice
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Pyloric Stenosis
  • Reflux Esophagitis
  • Stomach Diseases
  • Stomal Ulcer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Hepatitis
  • Vomiting Disorders

More

Read More
6

Procedures

  • Bile Duct Procedure
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • ERCP (Endoscopic Retrograde Cholangiopancreatography)
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Gastroenterology Procedures
  • Liver Biopsy

Background Check

0 Malpractice Claims

No malpractice history found for New Jersey.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.

Education

  • Umdnj--New Jersey Medical School
    Medical School | Graduated
  • UMDNJ University Hospital
    Residency Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Hahn has no media or publications listed.

Languages Spoken

  • English
  • Korean

Memberships & Professional Affiliations

Dr. Hahn does not have any memberships or affiliations listed. If you are Dr. Hahn and would like to add memberships or affiliations, please update your profile.

Dr. Hahn's Reviews

Likelihood of recommending Dr. Hahn to family and friends
3.3
based on 12 total reviews (2 with comments)

Likelihood to Recommend (12)

  • 5
    (4)
  • 4
    (4)
  • 3
    (0)
  • 2
    (0)
  • 1
    (4)

Dr. Hahn's Performance

Trustworthiness
VERY GOOD
Explains condition(s) well
GOOD
Answers Questions
GOOD
Time well spent
GOOD

Office & Staff Performance

Scheduling
VERY GOOD
Office environment
VERY GOOD
Staff friendliness
EXCELLENT
Average wait time
16 to 30 minutes

Patient Comments (2)

in Bayonne, NJ |
I've been going to Hahn for 25 years. He's damn good at what he does. Not going to lie, he's very straight forward and blunt. He doesn't sugar coat, which I like in my doctors. He knows his stuff, he's been doing this for a LONG time. If he tells you not to do something after a procedure, he's...more
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Elmwood Park, NJ |
This guy has a real attitude problem. I saw him a few times for about 6 months and his attitude kept changing (for the worse). He always makes you feel like it's your fault you're sick and it's your fault you're not getting better. To top it off, he rushes you when you might have more questions and...more
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Visit Dr. Hahn

Now Accepting New Patients
Dr. Hahn accepts 14 insurance carriers
  • Aetna
    Aetna HMO
    Choice Plus POS II
  • Blue Cross Blue Shield
    Blue Card PPO
  • Blue Cross Blue Shield of Louisiana
    BlueConnect HMO
  • Capital District Physician's Health Plan (CDPHP)
    Capital District Physician's Health Plan (CDPHP) HMO
  • Cigna
    Cigna HMO
    Cigna PPO
    Open Access Plus
  • EmblemHealth
    Health Insurance Plan of Greater New York (HIP) PPO
  • Empire Blue Cross Blue Shield
    Empire Blue Cross Blue Shield HMO
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Horizon Blue Cross Blue Shield of New Jersey
    Direct Access
    Horizon Blue Cross Blue Shield HMO
    Horizon Blue Cross Blue Shield POS
    Horizon Blue Cross Blue Shield PPO
  • Humana
    Choice Care PPO
  • MultiPlan
    MultiPlan PPO
    PHCS Network PPO
  • Oxford Health Plans
    Freedom Plan
  • QualCare
    QualCare HMO
    QualCare PPO
  • UnitedHealthCare
    Oxford Liberty

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Hahn has admitting privileges

Bayonne Medical Center
29th Street at Avenue E
Bayonne, NJ 07002
View Hospital Profile

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