Expertise in
14
conditions

Dr. Alexandra Guillaume

Gastroenterology
Stony Brook Univ. Hosp. Ob. & GYN.
3 Technology Dr Ste 300, 
East Setauket, NY 
Offers Telehealth
Expertise in
14
conditions
Stony Brook Univ. Hosp. Ob. & GYN.
3 Technology Dr Ste 300, 
East Setauket, NY 

Overview

Alexandra Guillaume is a Gastroenterologist practicing medicine in East Setauket, New York.

Dr. Guillaume is highly rated in 14 conditions, according to our data. Her clinical expertise encompasses Angiodysplasia of the Colon, Hiatal Hernia, Congenital Diaphragmatic Hernia, Endoscopy, and Colonoscopy.

She is actively involved in clinical research, co-authoring 9 peer reviewed articles.

Specialties

Gastroenterology

Licenses

Internal Medicine in NY

Hospital Affiliations

Ascension Ne Wisconsin - St Elizabeth Campus
North Shore University Hospital
Suny/stony Brook University Hospital

Languages Spoken

English

Gender

Female

Insurance

Accepted insurance can change. Please verify directly with the provider.

Find your insurance
Find your insuranceClose

Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Common Ground Healthcare Cooperative
  • EPO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Health First
  • HMO
  • POS
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Network Health
  • HMO
Northwell Health
  • INSURANCE PLAN
Tufts
  • HMO
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 10 Less Insurance Carriers -

Locations

Stony Brook Univ. Hosp. Ob. & GYN.
3 Technology Dr Ste 300, East Setauket, NY 11733
Other Locations
BayCare Aurora LLC
2845 Greenbrier Rd, Green Bay, WI 54311

Additional Areas of Focus

Dr. Guillaume has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Frequently Asked Questions about Dr. Alexandra Guillaume

How do I make an appointment with Dr. Alexandra Guillaume?

You can book an appointment with Dr. Alexandra Guillaume by calling their office at 631-444-5220. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Alexandra Guillaume a top-rated expert for Angiodysplasia of the Colon?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Alexandra Guillaume is classified as an Distinguished expert for Angiodysplasia of the Colon, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Alexandra Guillaume specialize in?

While Dr. Alexandra Guillaume is a Gastroenterology, they have specific expertise in Angiodysplasia of the Colon, Hiatal Hernia, and Congenital Diaphragmatic Hernia. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.

Does Dr. Alexandra Guillaume accept my insurance?

Dr. Alexandra Guillaume accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 631-444-5220 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Guillaume's expertise for a condition
ConditionClose
    View All 13 Advanced Conditions
    View All 32 Experienced Conditions
    Want to save this doctor for later?
    Sign Up
    Is this your doctor?
    Find A Second Opinion
    Not sure about your diagnosis?
    Check Your Symptoms
     
     
     
     
    Learn about our expert tiers
    Learn More
    Are you the provider on this profile?
    Claim Profile