Summary

Dr. Jeffrey Morganstern is a gastroenterologist and pediatrician who combines expertise in digestive health with specialized care for children. He earned his medical degree from Renaissance School of Medicine at Stony Brook University and completed his residency at Long Island Jewish Medical Center. With 26 years of experience treating patients, Dr. Morganstern brings extensive knowledge to his dual specialties. He is fluent in both English and Spanish.

Dr. Morganstern practices at multiple locations throughout Stony Brook, Smithtown, East Setauket, Commack, and Bay Shore, New York, with affiliations at Stony Brook University Hospital, South Shore University Hospital, and Saint Catherine of Siena Medical Center. His clinical focus includes treating abdominal pain, chronic constipation, and abdominal pain during pregnancy. He performs laparoscopy, upper GI endoscopy, and colonoscopy procedures to diagnose and treat digestive conditions. Patients consistently rate Dr. Morganstern highly, giving him an average rating of 5.0.
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Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 5
  • 26 years of experience
  • speaks English, Spanish
  • Long Island Jewish Medical Center
  • 4 written reviews
  • 2 specialties
  • 13 areas of expertise
  • 2 board certifications
  • 3 hospital affiliations
  • 11 office locations
  • Male

Patients’ Perspective

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

Office Locations

Dr. Jeffrey Alan Morganstern has 11 locations

Stony Brook University Medical Center Pediatric Gastroenterology

101 Nicolls Rd Ste 80Stony Brook, NY 11794
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

Stony Brook University Hospital

101 Nicolls RdStony Brook, NY 11794

Stony Brook Childrens Smithtown

260 E Main St Ste 107Smithtown, NY 11787
Mon8:00 am - 8:00 pm
Tue8:00 am - 8:00 pm
Wed8:00 am - 8:00 pm
Thu8:00 am - 8:00 pm
Fri8:00 am - 5:00 pm
Sat8:00 am - 4:00 pm
SunClosed

Advanced Pediatric Care

4 Technology Dr Ste 250Setauket, NY 11733
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
Sat8:00 am - 3:00 pm
SunClosed

Dr. Jeffrey Alan Morganstern

260 E Main St Ste 107Smithtown, NY 11787
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
Sat8:00 am - 4:00 pm
SunClosed

Stony Brook Pediatrics

4 Technology Dr Ste 104East Setauket, NY 11733

Advanced Specialty Care

500 Commack Rd Ste 104Commack, NY 11725

Stony Brook Advanced Pediatric Care

260 E Middle Country Rd Ste 107Smithtown, NY 11787
Mon8:00 am - 8:00 pm
Tue8:00 am - 8:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 8:00 pm
Fri8:00 am - 5:00 pm
Sat8:00 am - 4:00 pm
SunClosed

Advanced Pediatric Care

4 Technology Dr Ste 101East Setauket, NY 11733
Mon8:00 am - 8:00 pm
Tue8:00 am - 8:00 pm
Wed8:00 am - 8:00 pm
Thu8:00 am - 8:00 pm
Fri8:00 am - 5:00 pm
Sat8:00 am - 4:00 pm
SunClosed

Compare with Similar Doctors

Dr. Jeffrey Alan Morganstern, MD
Dr. Michael Dann, MD
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Dr. Jeffrey Alan Morganstern, MDDr. Michael Dann, MDDr. Connie Park, MDDr. Kristen Kyong Lee, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
26 Years of Experience 22 Years of Experience 17 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English Speaks English
Stony Brook , NYNew York , NYNew York , NYNew York , NY
Med School: Suny Stony Brookhealth Med School: State University of New York Med School: State University of New York Med School: Cornell University
Current Profile
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Insurance Plans Accepted by Dr. Jeffrey Alan Morganstern

  • Accepts Medicaid

Medical Specialties

Dr. Jeffrey Alan Morganstern has the following 2 specialties

Specialty Expertise

Dr. Jeffrey Alan Morganstern has the following 13 areas of expertise

  • Celiac Disease
  • Cholesterol Management
  • Constipation
  • Failure to Thrive
  • Hepatitis
  • Hepatitis B
  • Inflammatory Bowel Diseases (IBD)
  • Obesity
  • Pediatrics
  • Peptic Ulcer
  • Short Bowel Syndrome
  • Ulcerative Colitis
  • Viral Human Hepatitis

Certifications, License, & Education

26 Years Experience

Dr. Jeffrey Alan Morganstern 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 Long Island Jewish Medical Center.

Medical School

Graduated from Suny Stony Brookhealth and Renaissance School Of Medicine At Stony Brook University in 2000.

NPI Number

Dr. Morganstern's NPI number is 1306889704.

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Frequently Asked Questions

Where is Dr. Jeffrey Morganstern's office located?
Dr. Jeffrey Morganstern's office is located at 101 Nicolls Rd Ste 80, Stony Brook, NY, 11794.
What languages does Dr. Jeffrey Morganstern speak?
Dr. Jeffrey Morganstern speaks English and Spanish.
How can I make an appointment with Dr. Jeffrey Morganstern?
You can find contact information for Dr. Jeffrey Morganstern here on Vitals.
Does Dr. Jeffrey Morganstern accept my insurance?
You can see the insurance plans that Dr. Jeffrey Morganstern accepts on their Vitals profile.
Does Dr. Jeffrey Morganstern accept virtual/telehealth appointments?
Dr. Jeffrey Morganstern has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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