Summary

Dr. William Cohn is a gastroenterologist and internal medicine physician who graduated from Virginia Commonwealth University School of Medicine and completed his residency at Medical College of Virginia Hospital. With over five decades of medical practice, he brings extensive expertise to digestive health care. Dr. Cohn is fluent in both English and Spanish, enabling him to serve a diverse patient population.

Dr. Cohn practices at multiple locations throughout Long Island, including East Setauket and Wading River, NY, and maintains affiliations with Saint Charles Hospital and Mather Hospital. He specializes in treating conditions such as colon polyps, diverticular disease, and diverticulosis. His procedural expertise includes performing colonoscopies and both upper and lower gastrointestinal endoscopies to diagnose and monitor digestive health issues. Patients have given him an average rating of 4.4 out of 5 stars.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.4
  • 54 years of experience
  • 37 insurance plans accepted
  • speaks English, Spanish
  • Medical College Of Virginia Hospital
  • 6 written reviews
  • 2 specialties
  • 13 areas of expertise
  • 1 hospital affiliation
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. William Jay Cohn has 4 locations

Long Island Digestive Disease Consultants

3400 Nesconset Hwy Ste 101East Setauket, NY 11733
Mon7:30 am - 5:00 pm
Tue7:30 am - 5:00 pm
Wed7:30 am - 5:00 pm
Thu7:30 am - 5:00 pm
Fri7:30 am - 5:00 pm
SatClosed
SunClosed

Northwell Health

271 New York 25A Suite 1Wading River, NY 11792
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Mather Hospital

75 N Country RdPort Jefferson, NY 11777

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Dr. William Jay Cohn, MDDr. Kristen Kyong Lee, MDRebecca Humphries, APRNDr. Qin Rao, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.4 
54 Years of Experience 17 Years of Experience 12 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English
East Setauket , NYNew York , NYSacramento , CANew York , NY
Med School: Virginia Commonwealth University School Of Medicine Med School: Cornell University Med School: Emory University Med School: State University of New York
Current Profile
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Insurance Plans Accepted by Dr. William Jay Cohn

  • Accepts Medicare
  • Accepts Medicaid
  • 1199SEIU
  • AARP
  • Aetna
  • Aetna - PPO
  • Anthem Blue Cross
  • Assurant Health
  • Blue Cross Blue Shield
  • CHAMPVA - HMO
  • Cigna
  • EmblemHealth
  • EmblemHealth - HMO
  • EmblemHealth - Medicare (Advantage HMO)
  • Fidelis Care (NY)
  • Fidelis Care (NY) - Medicaid
  • GEHA
  • HealthFirst (NY)
  • Humana
  • Humana - Medicare
  • Humana - Medicare (Advantage HMO)
  • MagnaCare
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - HMO
  • Medicare - Medicare
  • Meritain Health
  • MVP Health Care
  • Northwell Direct
  • Palmetto GBA
  • Palmetto GBA - Medicare
  • Transamerica
  • Tricare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - PPO
  • UnitedHealthcare Oxford
  • Wellcare

Medical Specialties

Dr. William Jay Cohn has the following 2 specialties

Specialty Expertise

Dr. William Jay Cohn has the following 13 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Gastrointestinal Endoscopy
  • Hemorrhoids
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Liver Diseases
  • Ulcerative Colitis

Certifications, License, & Education

54 Years Experience

Dr. William Jay Cohn holds an active medical license in the state of New York.

Medical License

Medical Doctor with an active medical license in the state of New York that expires in 2026.

Education & Training

Residency

Completed their residency at Medical College Of Virginia Hospital.

Medical School

Graduated from Virginia Commonwealth University School Of Medicine in 1972.

NPI Number

Dr. Cohn's NPI number is 1861459208.

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Frequently Asked Questions

Where is Dr. William Cohn's office located?
Dr. William Cohn's office is located at 3400 Nesconset Hwy Ste 101, East Setauket, NY, 11733.
Which hospitals is Dr. William Cohn affiliated with?
Dr. William Cohn is affiliated with Saint Charles Hospital.
Does Dr. William Cohn accept my insurance?
You can see the insurance plans that Dr. William Cohn accepts on their Vitals profile.
Does Dr. William Cohn accept virtual/telehealth appointments?
Dr. William Cohn has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. William Cohn accepting new patients?
Dr. William Cohn is accepting new patients on Vitals. View Dr. William Cohn's profile on Vitals to make an appointment.

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