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Dr. Alexandra Guillaume, MD

Gastroenterology* Age 47
Dr. Alexandra Guillaume, MD
3.7 (3 Ratings)
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Dr. Alexandra Guillaume, MD is a Gastroenterologist in East Setauket, NY.
Dr. Alexandra Guillaume, MD
3.7 (3 Ratings)
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Dr. Alexandra Guillaume, MD

Gastroenterology* Age 47
East Setauket, NY
Call for new patient details
18 years of experience
Dr. Alexandra Guillaume, MD is a Gastroenterologist in East Setauket, NY.

About

Dr. Alexandra Guillaume, MD is a Gastroenterologist in East Setauket, NY and has 18 years experience. They graduated from Tufts University. They currently practice at Practice and are affiliated with Stony Brook University Hospital and Saint Joseph's Hospital Health Center. Dr. Guillaume has experience treating conditions like Gastrointestinal Malabsorption, Constipation and Diaphragmatic and Hiatal Hernia among other conditions at varying frequencies. At present, Dr. Guillaume received an average rating of 3.7/5 from patients and has been reviewed 3 times. Their office is not accepting new patients. Dr. Guillaume is board certified in Gastroenterology and accepts multiple insurance plans.

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Experience Check

Enter a condition or procedure
Gastrointestinal Malabsorption
Constipation
Diaphragmatic and Hiatal Hernia
Gastrointestinal Malabsorption
Constipation
Diaphragmatic and Hiatal Hernia
Gastrointestinal Malabsorption
Constipation
Diaphragmatic and Hiatal Hernia
Duodenal Ulcer
Abdominal Pain
Acute Gastritis
Anal or Rectal Pain
Anemia
  • View other providers who treat Anemia
Barrett's Esophagus
Chronic Gastritis
Colorectal Polyp
Dehydration
Diarrhea
  • View other providers who treat Diarrhea
Duodenitis
Dysphagia
Eosinophilic Esophagitis
Esophageal Achalasia and Cardiospasm
Esophageal Motility Disorders
Esophageal Ulcer
Esophagitis
Gas-Bloat Syndrome
Gastric Ulcer
Gastritis
Gastroesophageal Reflux Disease (GERD)
Gastrointestinal Bleeding
Gastroptosis
Heartburn
Hemorrhoids
Intestinal Diverticulosis
Intestinal Ulcer
Lactose Intolerance
Malnutrition
Nausea
  • View other providers who treat Nausea
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis
Reflux Esophagitis
Vomiting Disorders
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Flexible Sigmoidoscopy
Manometry
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Rigid Proctosigmoidoscopy
Benign Neoplasm of the Digestive System
Biliary Cirrhosis
Celiac Disease
Cirrhosis
Congenital Achalasia
Congenital Anomaly Esophagus
Crohn's Disease
Cyclical Vomiting Syndrome
Cystic Fibrosis
Diffuse Esophageal Spasm
Duodenal Cancer
Dysentery
Enteritis
Eosinophilic Gastritis
Esophageal Diverticulum
Esophageal Varices
Familial Adenomatous Polyposis
Food Allergy
Gallstones
Gastrojejunal Ulcer
Gastroparesis
Hemochromatosis
Hepatitis B
Hepatitis B - Immune Response
Hepatitis C
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Hiatal Hernia with Obstruction
Ileus
  • View other providers who treat Ileus
Indigestion
Infectious Diarrheal Disease
Inflammatory Bowel Disease
Intestinal Diverticulitis
Intestinal Obstruction
Intestinal Prolapse
Irritable Bowel Syndrome
Ischemic Colitis
Liver Damage from Alcohol
Neurogenic Bowel
Pancreatitis
Peptic Ulcer
Primary Biliary Cholangitis
Proctoptosis
Pyloric Stenosis
Rectal Prolapse
Retroperitoneum Cancer
Stomal Ulcer
Ulcerative Colitis
Unexplained Weight Loss
Upper Digestive Tract Cancer
Viral Enteritis
Viral Hepatitis
Vitamin B12 Anemia
Vitamin_Deficiency
Colon Cancer Screening
Colorectal Cancer Screening
Fecal Impaction Removal
Gallbladder Scan
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Liver Biopsy
Liver Function Test
pH Probe
  • View other providers who treat pH Probe
Screening Colonoscopy
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • Aetna HMO
    Choice Plus POS II
    Elect Choice (Open Access) EPO
    Managed Choice (Open Access) POS
    Open Choice PPO
    Premier Care Network Plus - Innovation Health
    Savings Plus of Metro, NY
    Select
  • Signature Health Plan
  • Blue Card PPO
  • Capital District Physician's Health Plan (CDPHP) PPO
    National EPO
  • Cigna PPO
    LocalPlus
    Open Access Plus
  • Flex Connecticut EPO
    Passage HMO
  • GHI CBP
    HIP Prime HMO
  • Empire Blue Cross Blue Shield PPO
    Empire Hospital
    Empire Hospital/Medical (Trad)
  • BluePPO HSA PPO
    SimplyBlue/Simply Blue Plus PPO
  • MagnaCare PPO
  • MVP Health Plan EPO
  • Freedom
    Liberty
  • Choice Plus POS
    Navigate HMO
    Navigate POS
    Nexus Open Access
    Options PPO

Locations

  1. 1 Stony Brook Univ. Hosp. Ob. & GYN.
    3 Technology Dr Ste 300, East Setauket, NY 11733
    Icon Directions Right Arrow Directions Phone Icon (631) 444-5220
    Monday
    Closed
    Tuesday
    08:00 - 16:30
    Wednesday
    Closed
    Thursday
    Closed
    Friday
    Closed
    Saturday
    Closed
    Sunday
    Closed
  2. 2 BayCare Aurora LLC
    2845 Greenbrier Rd, Green Bay, WI 54311
    Icon Directions Right Arrow Directions Phone Icon (920) 288-8100
  3. 3 St. Joseph's Hospital Health Center
    301 Prospect Ave, Syracuse, NY 13203
    Icon Directions Right Arrow Directions Phone Icon (315) 448-5200
  4. 4 Stony Brook University Hospital
    101 Nicolls Rd, Stony Brook, NY 11794
    Icon Directions Right Arrow Directions Phone Icon (631) 444-5220

Patient Satisfaction

Likelihood to recommend Dr. Guillaume
3.7
Based on 3 Reviews
5 Stars (2)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (1)

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How likely are you to recommend Dr. Guillaume?

(Select your rating)
Patient Reviews
Sep 08, 2022
She was knowledgeable and very easy to talk to. She made me feel at ease and gave me hope that things can get better. I feel very comfortable with her.
Crismilda Boyle — Sep 08, 2022
See more reviews on Healthgrades
Photo: Dr. Alexandra Guillaume, MD
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Dr. Guillaume's Office & Staff

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  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. Guillaume

  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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About Me

Specialties*
Gastroenterology
Internal Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Education

Education

Medical Education
  • Tufts University
    2006
Medical Education

Board Certifications

Board Certifications
  • Gastroenterology
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Guillaume communicate via email?
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Does Dr. Guillaume offer telehealth services or virtual visits?
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Does Dr. Guillaume offer an online patient portal?
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Does Dr. Guillaume have free onsite parking?
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Does Dr. Guillaume offer weekend visits?
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Does Dr. Guillaume offer evening visits?
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Does Dr. Guillaume specialize in working with children or adolescents?
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Does Dr. Guillaume specialize in working with seniors?
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Does Dr. Guillaume specialize in couples therapy?
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Does Dr. Guillaume specialize in working with LGBTQ+ community?
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Does Dr. Guillaume accept insurance?
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Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Alexandra Guillaume, MD. To arrange an appointment, call the number on Dr. Guillaume's profile.

Dr. Guillaume frequently treats the following conditions: Gastrointestinal Malabsorption, Constipation and Diaphragmatic and Hiatal Hernia. See more on Sharecare.

Dr. Alexandra Guillaume, MD is affiliated with Stony Brook University Hospital and Saint Joseph's Hospital Health Center.

Yes, Dr. Alexandra Guillaume, MD holds board certification in Gastroenterology.

Hospital Affiliations

  • Stony Brook University Hospital

    101 Nicolls Rd, Stony Brook, NY

  • Saint Joseph's Hospital Health Center

    301 Prospect Ave, Syracuse, NY