Dr. Alexandra Guillaume
- Gender: Female
- Experience: 15 years
- Graduated from: Tufts University School Of Medicine
- Graduation year: 2006
- Sole propriator: No
- NPI: 1396981197
Dr. Alexandra Guillaume MD
Gastroenterologist
She is located at 3 Technology Drive in East Setauket, NY 11733. Can help patients with the following: Esophagitis, Fatty Liver Disease, Gallbladder Pain, Hepatitis B (HBV), Liver Disease, Pancreatitis. Her National Provider Identifier (NPI) number is 1396981197. Appointment can be made via the phone number (631) 444-5220. She is affiliated with 1 practices and 2 hospitals.
Conditions treated
Dr. Alexandra Guillaume, being an gastroenterologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Alexandra Guillaume.
- Abdominal Pain
- Anemia
- Ascites
- Autoimmune Hepatitis
- Bad Breath
- Barrett's Esophagus
- Bleeding Varices
- Blood in Stool
- Botulism
- Cancer
- Carcinoid Tumor
- Celiac Disease
- Childhood Obesity
- Cirrhosis
- Clostridium Difficile Colitis
- Colitis
- Colonoscopy
- Constipation
- Crohn's Disease
- Diarrhea
- Diverticulosis
- Eosinophilic Esophagitis
- Esophagitis
- Fatty Liver Disease
- Feeding and Swallowing
- Food Allergies
- Gallbladder Pain
- Gastric Bypass Surgery
- Gastritis
- Gastroesophageal Reflux Disease (GERD)
- Gastroparesis
- Heartburn
- Helicobacter Pylori Infection
- Hemorrhoids
- Hepatitis A (HAV)
- Hepatitis B (HBV)
- Hepatitis C (HCV)
- Indigestion
- Inflammatory Bowel Disease (IBD)
- Internal Bleeding
- Intussusception
- Irritable Bowel Syndrome (IBS)
- Lactose Intolerance
- Leaky Gut Syndrome
- Liver Disease
- Nausea and Vomiting
- Pancreas Divisum
- Pancreatic Cancer
- Pancreatic Cysts
- Pancreatitis
- Peptic Ulcer
- Portal Hypertension
- Primary Biliary Cirrhosis (PBC)
- Primary Sclerosing Cholangitis (PSC)
- Stomach Cancer
- Swallowing Disorders
- Ulcerative Colitis
Procedures Performed by Dr. Alexandra Guillaume
Medicare Enrollment
Dr. Alexandra Guillaume is enrolled to bill Medicare as a Practitioner - Gastroenterology .
Bills through: Canton-potsdam Hospital
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| AbbVie | $3662 |
| Covidien | $679 |
| Conmed | $350 |
Other
| Food and Beverage | $6319 |
Studies
TUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated in 2006Additional Specialities
- Resident
Looking for more Gastroenterologists?
Out of the 20 gastroenterologists in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: Suite 101 3400 Nesconset Highway East Setauket, 11733, NY
- Gender: Male
- Address: Suite 300 3 Technology Drive East Setauket, 11733, NY
- Gender: Female
- Address: Ste 101 3400 Nesconset Highway East Setauket, 11733, NY
- Gender: Male
- Address: Suite 101 3400 Nesconset Highway East Setauket, 11733, NY
- Gender: Male
- Address: Suite 101 3400 Nesconset Highway East Setauket, 11733, NY
- Gender: Male
- Address: Suite 700 3 Technology Drive East Setauket, 11733, NY
- Gender: Female
- Address: 4 Technology Drive East Setauket, 11733, NY
- Gender: Female
- Address: Suite 300 3 Technology Drive East Setauket, 11733, NY
- Gender: Male
- Address: Suite 101 3400 Nesconset Highway East Setauket, 11733, NY
- Gender: Male
- Address: 111 Osborne Street Floor 2 Danbury, 6810, CT
Questions & Answers
Has Dr. Alexandra Guillaume affiliation with hospitals?
Dr. Alexandra Guillaume is affiliated with SUNY/STONY BROOK UNIVERSITY HOSPITAL. For the full list of hospitals see this list.
What conditions does Dr. Alexandra Guillaume treat?
Dr. Alexandra Guillaume provides treatment for Esophagitis, Fatty Liver Disease, Gallbladder Pain, Hepatitis B (HBV), Liver Disease, Pancreatitis. For the full list see this list.
Where can you meet with Dr. Alexandra Guillaume?
Dr. Alexandra Guillaume's office is located at 3 Technology Drive in East Setauket, NY 11733.
Does Dr. Alexandra Guillaume have affiliation with practices?
Dr. Alexandra Guillaume is affiliated with Stony Brook University Hospital.