Dr. Isabelle Vonalthen-Dagum, MD


Gastroenterology | Female

Univ Gastroenterology/Hepatlgy 3 Technology Dr Ste 300 East Setauket, NY 11733 Get Directions
Dr. Isabelle Vonalthen-Dagum, MD
Dr. Isabelle Vonalthen-Dagum, MD is a gastroenterology doctor who practices in East Setauket, NY. She is 56 years old and has been practicing for 30 years. Dr. Vonalthen-Dagum is affiliated with Stony Brook University Hospital.

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Dr. Vonalthen-Dagum's Experience

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Visiting Dr. Vonalthen-Dagum

Dr. Vonalthen-Dagum accepts 6 insurance carriers

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Hospital Quality
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Dr. Vonalthen-Dagum's Reviews

Likelihood of recommending Dr. Vonalthen-Dagum to family and friends
based on 8 total reviews (5 with comments)
Dr. Vonalthen-Dagum's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    10 to 15 minutes
Patient Comments (5)
in Sayville, NY |
Had a routine colonoscopy performed by Dr.Von Althen. During the procedure, Dr. von Althen noticed a structural defect and sent me for a CAT scan with contrast. She called me the next day and told me that based on the CAT scan results, surgery was necessary. She was very sympathetic and would send all of my reports to my surgeon that day. Whatever the outcome, I will forever be grateful to Dr. Von Althen for quickly finding and following up on my situation.
O Fallon, MO |
Good bedside manner. Clear and straightforward conversation about my situation and next steps.
in Willet N. Y. |
Just recommended her to a friend. Both my sister in law and I use her. Very friendly and professional We've been patients for over a decade. Had a scare recently and was scheduled for a test within the month.
centereach |
She just left a bazaar message 9n my 80 year old mothers answering machine that they might have seen a spot on her kidney, bit if it is cancer it's curable What kind of wacko dr. Does that? Seriously, and now she can't be reached, so my mother gets to be sick with worry until tomorrow while this Dr goes put to eat. Who DOES THAT????
Centereach, NY |
Very professional, explained procedure and was kind and caring
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Dr. Vonalthen-Dagum's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Gastroenterology
  •  Board certified in Gastroenterology
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Vonalthen-Dagum has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for New York.

    What is medical malpractice
  • 0

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

    What is a sanction or disciplinary action
  • 0
    Board Actions

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

    What are board actions

Board Certifications

Why It Matters: Dr. Vonalthen-Dagum's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Gastroenterology

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Anal Prolapse
  • 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
  • Cirrhosis
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Enteritis
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gallstones
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastrojejunal Ulcer
  • Gastroparesis
  • Heartburn
  • Hemorrhoids
  • Hepatitis A
  • Hepatitis B - Immune Response
  • Hepatitis C
  • Hepatitis D
  • Hernia
  • Ileus
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Abscess
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Lactose Intolerance
  • Liver Damage from Alcohol
  • Malnutrition
  • Megacolon
  • Nausea
  • Non-Alcoholic Fatty Liver Disease
  • Non-Neonatal Jaundice
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Pouchitis
  • Pyloric Stenosis
  • Reflux Esophagitis
  • Stomach Cancer
  • Stomach Diseases
  • Stomach and Small Intestine Cancer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Vascular Insufficiency of Intestines
  • Viral Enteritis
  • Viral Hepatitis
  • Vomiting Disorders


  • Medical School
    University Of Ottawa Faculty Of Medicine

    Graduated in 1987

  • Internship Hospital
    Ottawa Genl Hospital

    Completed in 1988

  • Residency Hospital
    Toronto Genl Hospital

    Completed in 1990

Languages Spoken

  • English

Memberships &
Professional Affiliations

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


  • Gastroenterology

Procedures Performed

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