3.7
3 Ratings with 1 written Review
Summary
Dr. Alexandra Guillaume treats gas, bloating and burping, and abdominal pain, and performs esophagus tests, colonoscopy, and lower GI endoscopy. She practices gastroenterology and internal medicine and has 20 years of experience. Dr. Guillaume is affiliated with Stony Brook University Hospital and sees patients in East Setauket and Stony Brook, New York.
She completed her residency at New York University Medical Center and earned her medical degree from Tufts University School of Medicine. Dr. Guillaume speaks English and Spanish. Patients on Vitals rate her 3.67 out of 5.
She completed her residency at New York University Medical Center and earned her medical degree from Tufts University School of Medicine. Dr. Guillaume speaks English and Spanish. Patients on Vitals rate her 3.67 out of 5.
Overview based on verified provider data
Quick Facts
- 20 years of experience
- speaks English, Spanish
- New York University Medical Center
- 1 written review
- 2 specialties
- 9 areas of expertise
- 1 hospital affiliation
- 2 office locations
- Female
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Dr. Alexandra Guillaume has 2 locationsCompare with Similar Doctors
 |  |  |  |
| Dr. Alexandra Guillaume, MD | Dr. Mikhail Yakubov, MD | Dr. Michael Schopis, MD | Ji Soo Choi, APRN |
| Gastroenterology | Gastroenterology | Gastroenterology | Gastroenterology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 20 Years of Experience | 14 Years of Experience | 9 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, Spanish | Speaks English, Russian, Hebrew | Speaks English | Speaks English |
| East Setauket , NY | New York , NY | New York , NY | Sacramento , CA |
| Med School: TUFTS UNIVERSITY SCHOOL OF MEDICINE | Med School: American University Of The Caribbean School Of Medicine | Med School: University Of Toledo College Of Medicine | Med School: New York University |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Alexandra Guillaume
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Alexandra Guillaume has the following 2 specialties
Specialty Expertise
Dr. Alexandra Guillaume has the following 9 areas of expertise
Certifications, License, & Education
20 Years Experience
Dr. Alexandra Guillaume holds an expired medical license in the state of New York.
Medical License
Medical Doctor with an expired medical license in the state of New York that expired in 2026.
Education & Training
Residency
Completed their residency at New York University Medical Center.
Medical School
Graduated from TUFTS UNIVERSITY SCHOOL OF MEDICINE in 2008 and Tufts University School Of Medicine in 2006.
NPI Number
Dr. Guillaume's NPI number is 1396981197.
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Frequently Asked Questions
- Where is Dr. Alexandra Guillaume's office located?
- Dr. Alexandra Guillaume's office is located at 3 Technology Dr, East Setauket, NY, 11733.
- How can I make an appointment with Dr. Alexandra Guillaume?
- You can find contact information for Dr. Alexandra Guillaume here on Vitals.
- What languages does Dr. Alexandra Guillaume speak?
- Dr. Alexandra Guillaume speaks English and Spanish.
- Is Dr. Alexandra Guillaume accepting new patients?
- Dr. Alexandra Guillaume has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. Alexandra Guillaume accept virtual/telehealth appointments?
- Dr. Alexandra Guillaume has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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